696 FPUS82 KCHS 182010 OPUCHS TEST...KCHS/KSAV Gateway Observations...TEST National Weather Service Charleston SC 400 PM EDT MON MAY 18 2026 NOTE: "fair" indicates few or no clouds below 12,000 feet with no significant weather and/or obstructions to visibility. SCZ150-WAZ558-NCZ071-TXZ119-213-PAZ071-DCZ001-FLZ074-172-MI076- NYZ176-178-MAZ016-IL014-TNZ027-NJZ106-GAZ044-MD014-182100- ...Gateway Observations for Charleston International... CITY SKY/WX TMP DP RH WIND PRES REMARKS Chas Airport MOSUNNY 84 65 52 SE10G20 30.25S Seattle PTSUNNY 59 45 59 W7 30.26S Charlotte MOSUNNY 88 61 40 SW10 30.23F Dallas DFW PTSUNNY 89 68 49 S21G37 29.82F HX 93 Dallas Love PTSUNNY 88 68 51 S21G35 29.85S HX 91 Philladelphia MOSUNNY 96 62 32 W14 30.10F HX 97 Wash National MOSUNNY 93 66 40 S8 30.12F HX 96 Baltimore MOSUNNY 92 66 42 S9G22 30.11F HX 94 Miami CLOUDY 84 73 69 E14G24 30.11F HX 90 Detroit CLOUDY 78 69 73 SW6 29.92S Newark MOSUNNY 89 62 40 SE12G22 30.10F Laguardia MOSUNNY 82 61 48 S21G31 30.11F J F K MOSUNNY 76 62 62 S17 30.15S Boston Logan PTSUNNY 64 50 60 E16 30.14F Ft. Lauderdale PTSUNNY 85 74 69 E18 30.11F HX 92 Chicago O'Hare PTSUNNY 79 63 57 SW18G31 29.83S Chicago Midway CLOUDY 79 62 56 SW20G36 29.85S Houston Bush CLOUDY 87 75 67 S21 29.92F HX 96 Houston Hobby PTSUNNY 85 76 74 SE15G23 29.92F HX 94 Nashville MOSUNNY 91 58 32 S18G38 30.09F HX 90 Atlanta MOSUNNY 86 64 47 SE12G20 30.21F London Heathrw MOCLDY 55 39 54 SW14G25 29.89S $$ GAZ044-118-TXZ119-213-NCZ071-DCZ001-MDZ014-506-PAZ021-071-NJZ106- NYZ176-178-MAZ106-OHZ011-021-055-MIZ076-KYZ091-ILZ014-INZ047- MNZ060-ONZ431-182100- ...Gateway Observations for Savannah International... CITY SKY/WX TMP DP RH WIND PRES REMARKS Savannah Arpt MOSUNNY 86 64 47 E15 30.23F Atlanta MOSUNNY 86 64 47 SE12G20 30.21F Charlotte MOSUNNY 88 61 40 SW10 30.23F Dallas DFW PTSUNNY 89 68 49 S21G37 29.82F HX 93 Houston Bush CLOUDY 87 75 67 S21 29.92F HX 96 Wash National MOSUNNY 93 66 40 S8 30.12F HX 96 Wash Dulles MOSUNNY 94 62 34 SW8G17 30.12F HX 94 Baltimore MOSUNNY 92 66 42 S9G22 30.11F HX 94 Philadelphia MOSUNNY 96 62 32 W14 30.10F HX 97 Newark MOSUNNY 89 62 40 SE12G22 30.10F Laguardia MOSUNNY 82 61 48 S21G31 30.11F J F K MOSUNNY 76 62 62 S17 30.15S Boston PTSUNNY 64 50 60 E16 30.14F Pittsburg MOSUNNY 88 59 37 SW14G29 30.09F Akron MOSUNNY 86 61 42 S16G26 30.05F Cleveland MOSUNNY 87 57 35 S17G33 29.97F Cincinnati PTSUNNY 84 64 50 S20G32 30.05S Columbus MOSUNNY 89 56 32 S18G29 30.03F Detroit CLOUDY 78 69 73 SW6 29.92S Chicago O'Hare PTSUNNY 79 63 57 SW18G31 29.83S Minneapolis CLOUDY 59 54 83 VRB5 29.78R Indianapolis TSTM 69 67 93 W8 30.06R FOG Toronto Canada MOSUNNY 88 59 37 SW24G32 29.93F $$  545 FPUS83 KFGF 182010 OPUFGF PRAIRIE TO PINES WEATHER ROUNDUP NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS ND 300 PM CDT MON MAY 18 2026 **SATELLITE DATA USED TO AUGMENT SKY COVER AT AUTOMATED STATIONS** ***** WEATHER ACROSS EASTERN NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS GRAND FORKS CLOUDY 46 41 82 N17 29.93R GRND FORKS AFB CLOUDY 46 41 83 N20 29.92R GRND FORKS NWS N/A 45 43 92 MISG 29.88R BUXTON NOT AVBL DEVILS LAKE CLOUDY 45 39 81 N14 29.98R FARGO LGT RAIN 47 43 86 N20 29.88S WAHPETON ARPT CLOUDY 48 48 100 N20G29 29.83S $$ ***** WEATHER ACROSS CENTRAL AND WESTERN NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS JAMESTOWN LGT RAIN 44 41 89 N16G26 29.92R BISMARCK CLOUDY 43 38 82 N13 29.99S MINOT CLOUDY 42 37 82 N12 30.02S MINOT AFB CLOUDY 42 37 81 N13 30.00S GARRISON N/A 43 37 79 N17G23 30.00R WILLISTON NOT AVBL DICKINSON CLOUDY 42 35 76 N10 29.99R HETTINGER CLOUDY 44 39 82 N14 29.98S $$ ***** OTHER OBSERVATIONS NORTHEAST NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS WALHALLA CLOUDY 45 45 100 N15G22 29.98S LANGDON CLOUDY 43 43 100 N20 29.95F CAVALIER CLOUDY 45 45 100 N13G21 29.96F GRAFTON CLOUDY 46 45 93 N16G24 29.95S CANDO PTSUNNY 41 41 100 N17G25 30.00S FORT TOTTEN N/A 43 41 92 N6 29.95S ROLLA CLOUDY N/A N/A N/A N16G23 29.99S RUGBY CLOUDY 43 37 81 N15 29.99R ***** THE ABOVE OBSERVATIONS ARE NON NWS ARE NOT QUALITY CONTROLLED AND MAY MIS-REPORT RAIN FOR SNOW... $$ ***** OTHER OBSERVATIONS SOUTHEAST NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS COOPERSTOWN N/A 45 45 100 N18 29.93S VALLEY CITY LGT RAIN 45 45 100 N13G20 29.91R FOG OAKES CLOUDY 46 41 81 N18G26 29.89S GWINNER CLOUDY 48 48 100 N22G28 29.88R SHEYENNE NWR N/A 47 45 93 N12 29.95S BUFFALO NOT AVBL WYNDMERE NOT AVBL ***** THE ABOVE OBSERVATIONS ARE NON NWS ARE NOT QUALITY CONTROLLED AND MAY MIS-REPORT RAIN FOR SNOW... $$ ***** WEATHER ACROSS NORTHERN MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS FLAG ISLAND NOT AVBL WARROAD NOT AVBL ROSEAU NOT AVBL HALLOCK NOT AVBL THF RVR FALLS CLOUDY 47 41 80 N13 29.91R HALSTAD NOT AVBL FOSSTON NOT AVBL BAUDETTE CLOUDY 47 42 83 N9 29.90S WASKISH NOT AVBL CROOKSTON NOT AVBL $$ ***** WEATHER ACROSS CENTRAL AND WEST MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS BEMIDJI NOT AVBL PARK RAPIDS CLOUDY 55 43 63 N14G20 29.80F WADENA NOT AVBL DETROIT LAKES NOT AVBL MOORHEAD NOT AVBL FERGUS FALLS NOT AVBL ELBOW LAKE NOT AVBL MORRIS MN NOT AVBL STAPLES NOT AVBL WHEATON NOT AVBL $$ ***** WEATHER ELSEWHERE ACROSS MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS DULUTH CLOUDY 54 47 77 N7 29.80S INTRNTL FALLS CLOUDY 49 41 74 NE7 29.87R ELY NOT AVBL CLOQUET NOT AVBL BRAINERD CLOUDY 59 45 59 NW9G18 29.79F HIBBING CLOUDY 54 45 71 N12 29.81S ALEXANDRIA CLOUDY 60 47 61 N13 29.79R SAINT CLOUD CLOUDY 59 49 69 NE8 29.78S MINNEAPOLIS CLOUDY 59 54 83 VRB5 29.78R $$ ***** WEATHER ACROSS SOUTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS SIOUX FALLS CLOUDY 55 51 86 NE6 29.80S BROOKINGS CLOUDY 51 46 83 N9 29.84R WATERTOWN LGT RAIN 47 45 93 N10 29.87R HURON LGT RAIN 48 45 89 N13G22 29.87R SISSETON N/A 48 45 89 N15 29.85R ABERDEEN CLOUDY 47 41 80 N16G22 29.93R MITCHELL CLOUDY 49 44 83 N14 29.84F PIERRE RAIN 44 41 89 N15 29.92R FOG MOBRIDGE LGT RAIN 43 40 89 N13G23 29.91S RAPID CITY LGT RAIN 40 38 93 N23 29.99R $$ ***** SOME WEATHER IN NEARBY STATES ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS GLASGOW MT LGT RAIN 41 32 70 N10 30.14R GREAT FALLS MT CLOUDY 48 25 40 CALM 30.15S CHEYENNE WY MIX PCPN 35 33 92 N14G20 29.93R FOG SCOTTSBLUFF NE LGT RAIN 43 40 89 NE13 29.94R OMAHA NE CLOUDY 64 57 78 NE7 29.72F DES MOINES IA PTSUNNY 74 62 66 SE13 29.78F DAVENPORT IA PTSUNNY 74 63 68 SW13 29.83F CHICAGO IL PTSUNNY 79 63 57 SW18G31 29.83S EAU CLAIRE WI CLOUDY 74 61 63 SW8 29.75R LA CROSSE WI FAIR 80 63 55 SW14 29.74F $$ ***** SOME NATIONAL WEATHER ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS LA GUARDIA NY FAIR 82 61 48 S21G31 30.11F RALEIGH NC FAIR 96 61 31 SW14G21 30.20F HX 96 ATLANTA GA FAIR 86 64 47 SE12G20 30.21F NEW ORLEANS LA PTSUNNY 88 72 58 SE15G22 30.06F HX 94 OKLAHOMA CITY PTSUNNY 88 69 53 S30G44 29.74F HX 92 ALBUQUERQUE NM FAIR 79 10 7 W16G32 29.81F SALT LAKE CITY PTSUNNY 5129 42 N12 30.01S LOS ANGELES CA FAIR 70 54 56 SW14G24 29.90S BOISE ID FAIR 64 22 20 NW21G32 30.05F SEATTLE WA PTSUNNY 59 45 59 W7 30.26S $$ *** WEATHER ACROSS MANITOBA...SASKATCHEWAN AND ONTARIO *** ***ONTARIO*** CITY SKY/WX TMP DP RH WIND PRES REMARKS GERALDTON NOT AVBL THUNDER BAY CLOUDY 50 45 81 E12 29.84R SIOUX LOOKOUT CLOUDY 41 36 81 E10G21 29.94R TORONTO MOSUNNY 88 59 37 SW24G32 29.93F BIG TROUT LK PTSUNNY 41 27 56 E8G17 30.17F PICKLE LAKE CLOUDY 36 34 93 E13G29 30.01 DRYDEN CLOUDY 41 37 87 NE12G20 29.92R KENORA CLOUDY 43 37 81 NE8 29.94R $$ *** MANITOBA*** CITY SKY/WX TMP DP RH WIND PRES REMARKS BRANDON CLOUDY 41 36 81 NE14 30.05R DAUPHIN LGT RAIN 41 36 81 NE16G23 30.10R ISLAND LAKE CLOUDY 43 23 45 E12G18 30.16F PILOT MOUND N/A 41 37 87 N15 N/A THE PAS PTSUNNY 46 23 39 N8 30.18S THOMPSON PTSUNNY 45 23 42 N7 30.19F WINNIPEG CLOUDY 43 39 87 NE17G24 30.00R LYNN LAKE MOSUNNY 45 27 49 VRB3 30.16F CHURCHILL FLURRIES 23 16 74 N7 30.35F WCI 15 GILLAM PTSUNNY 36 18 48 NE7 30.26F $$ ***SASKATCHEWAN*** CITY SKY/WX TMP DP RH WIND PRES REMARKS ESTEVAN LGT RAIN 41 36 81 NE6 30.08R KINDERSLEY LGT RAIN 54 32 43 W18G25 30.09F LLOYDMINSTER PTSUNNY 54 37 54 SW14G21 30.05R PRINCE ALBERT MOSUNNY 50 19 29 VRB2 30.14S REGINA CLOUDY 39 36 87 N6 30.13S YORKTON CLOUDY 41 36 81 NW10 30.13S  486 FPUS82 KCHS 182025 OPUCHS TEST...KCHS/KSAV Gateway Observations...TEST National Weather Service Charleston SC 400 PM EDT MON MAY 18 2026 NOTE: "fair" indicates few or no clouds below 12,000 feet with no significant weather and/or obstructions to visibility. SCZ150-WAZ558-NCZ071-TXZ119-213-PAZ071-DCZ001-FLZ074-172-MI076- NYZ176-178-MAZ016-IL014-TNZ027-NJZ106-GAZ044-MD014-182100- ...Gateway Observations for Charleston International... CITY SKY/WX TMP DP RH WIND PRES REMARKS Chas Airport MOSUNNY 84 65 52 SE10G20 30.25S Seattle PTSUNNY 59 45 59 W7 30.26S Charlotte MOSUNNY 88 61 40 SW10 30.23F Dallas DFW PTSUNNY 89 68 49 S21G37 29.82F HX 93 Dallas Love PTSUNNY 88 68 51 S21G35 29.85S HX 91 Philladelphia MOSUNNY 96 62 32 W14 30.10F HX 97 Wash National MOSUNNY 93 66 40 S8 30.12F HX 96 Baltimore MOSUNNY 92 66 42 S9G22 30.11F HX 94 Miami CLOUDY 81 72 74 SE14 30.11F Detroit CLOUDY 78 69 73 SW6 29.92S Newark MOSUNNY 89 62 40 SE12G22 30.10F Laguardia MOSUNNY 82 61 48 S21G31 30.11F J F K MOSUNNY 76 62 62 S17 30.15S Boston Logan PTSUNNY 64 50 60 E16 30.14F Ft. Lauderdale PTSUNNY 85 74 69 E18 30.11F HX 92 Chicago O'Hare PTSUNNY 79 63 57 SW18G31 29.83S Chicago Midway CLOUDY 79 62 56 SW20G36 29.85S Houston Bush CLOUDY 87 75 67 S21 29.92F HX 96 Houston Hobby PTSUNNY 85 76 74 SE15G23 29.92F HX 94 Nashville MOSUNNY 91 58 32 S18G38 30.09F HX 90 Atlanta MOSUNNY 86 64 47 SE12G20 30.21F London Heathrw CLOUDY 54 41 62 SW13 29.89S $$ GAZ044-118-TXZ119-213-NCZ071-DCZ001-MDZ014-506-PAZ021-071-NJZ106- NYZ176-178-MAZ106-OHZ011-021-055-MIZ076-KYZ091-ILZ014-INZ047- MNZ060-ONZ431-182100- ...Gateway Observations for Savannah International... CITY SKY/WX TMP DP RH WIND PRES REMARKS Savannah Arpt MOSUNNY 86 64 47 E15 30.23F Atlanta MOSUNNY 86 64 47 SE12G20 30.21F Charlotte MOSUNNY 88 61 40 SW10 30.23F Dallas DFW PTSUNNY 89 68 49 S21G37 29.82F HX 93 Houston Bush CLOUDY 87 75 67 S21 29.92F HX 96 Wash National MOSUNNY 93 66 40 S8 30.12F HX 96 Wash Dulles MOSUNNY 94 62 34 SW8G17 30.12F HX 94 Baltimore MOSUNNY 92 66 42 S9G22 30.11F HX 94 Philadelphia MOSUNNY 96 62 32 W14 30.10F HX 97 Newark MOSUNNY 89 62 40 SE12G22 30.10F Laguardia MOSUNNY 82 61 48 S21G31 30.11F J F K MOSUNNY 76 62 62 S17 30.15S Boston PTSUNNY 64 50 60 E16 30.14F Pittsburg MOSUNNY 88 59 37 SW14G29 30.09F Akron MOSUNNY 86 61 42 S16G26 30.05F Cleveland MOSUNNY 87 57 35 S17G33 29.97F Cincinnati PTSUNNY 84 64 50 S20G32 30.05S Columbus MOSUNNY 89 56 32 S18G29 30.03F Detroit CLOUDY 78 69 73 SW6 29.92S Chicago O'Hare PTSUNNY 79 63 57 SW18G31 29.83S Minneapolis CLOUDY 59 54 83 VRB5 29.78R Indianapolis TSTM 69 67 93 W8 30.06R FOG Toronto Canada MOSUNNY 88 59 37 SW24G32 29.93F $$  537 NZUS99 KBOU 182026 OPUDEN Developmental Probabilistic Snow Accumulation Forecast (DIA) National Weather Service Denver/Boulder, Colorado 1426 MDT Monday, May 18, 2026 -------------------------------------------------------------------------------- This developmental product contains the probabilities (%) that the given snow amounts (inches) will occur at Denver International Airport during the respective 3 hour or 12 hour periods. The probabilities indicate the amount of snow that is expected to accumulate on runways and other concrete surfaces at DIA. [T (trace) means more than zero.] -------------------------------------------------------------------------------- Discussion (18/15-19/18 MDT): Rain will diminish through the early evening hours, and there's just a 20-30% chance of a few snowflakes mixing in during the evening hours. Any lingering showers will end overnight. No snow accumulation will occur due to warm air and pavement temperatures. 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 18/15-18/18 | 100 0 0 0 18/18-18/21 | 100 0 0 0 18/21-19/00 | 100 0 0 0 19/00-19/03 | 100 0 0 0 19/03-19/06 | 100 0 0 0 18/18-19/06 | 0 19/06-19/09 | 100 0 0 0 19/09-19/12 | 100 0 0 0 19/12-19/15 | 100 0 0 0 19/15-19/18 | 100 0 0 0 19/06-19/18 | 0 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 19/18-19/21 | 100 0 0 0 19/21-20/00 | 100 0 0 0 20/00-20/03 | 100 0 0 0 20/03-20/06 | 100 0 0 0 19/18-20/06 | 0 20/06-20/09 | 100 0 0 0 20/09-20/12 | 100 0 0 0 20/12-20/15 | 100 0 0 0 20/15-20/18 | 100 0 0 0 20/06-20/18 | 0  803 FPUS83 KFGF 182031 OPUFGF PRAIRIE TO PINES WEATHER ROUNDUP NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS ND 300 PM CDT MON MAY 18 2026 **SATELLITE DATA USED TO AUGMENT SKY COVER AT AUTOMATED STATIONS** ***** WEATHER ACROSS EASTERN NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS GRAND FORKS CLOUDY 46 41 82 N17 29.93R GRND FORKS AFB CLOUDY 46 41 83 N20 29.92R GRND FORKS NWS N/A 45 43 92 MISG 29.87S BUXTON NOT AVBL DEVILS LAKE CLOUDY 43 39 87 N20G25 29.97R FARGO CLOUDY 48 43 82 N17G25 29.88S WAHPETON ARPT CLOUDY 48 48 100 N20G31 29.83S $$ ***** WEATHER ACROSS CENTRAL AND WESTERN NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS JAMESTOWN LGT RAIN 44 41 89 N16G26 29.92R BISMARCK CLOUDY 43 38 82 N13 29.99S MINOT CLOUDY 42 37 82 N12 30.02S MINOT AFB CLOUDY 42 37 81 N13 30.00S GARRISON N/A 43 37 79 N17G23 30.00R WILLISTON NOT AVBL DICKINSON CLOUDY 42 35 76 N10 29.99R HETTINGER CLOUDY 44 39 82 N14 29.98S $$ ***** OTHER OBSERVATIONS NORTHEAST NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS WALHALLA CLOUDY 45 45 100 N20 29.97F LANGDON CLOUDY 41 41 100 N18G26 29.97S CAVALIER CLOUDY 45 45 100 N16G23 29.96S GRAFTON CLOUDY 45 43 93 N16G23 29.95S CANDO N/A 43 43 100 N16G24 30.00R FORT TOTTEN N/A 43 41 92 N6 29.95S ROLLA CLOUDY N/A N/A N/A N18 29.99S RUGBY CLOUDY 43 37 81 N14 29.99R ***** THE ABOVE OBSERVATIONS ARE NON NWS ARE NOT QUALITY CONTROLLED AND MAY MIS-REPORT RAIN FOR SNOW... $$ ***** OTHER OBSERVATIONS SOUTHEAST NORTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS COOPERSTOWN N/A 45 45 100 N18 29.93R VALLEY CITY LGT RAIN 45 45 100 N17 29.92S FOG OAKES CLOUDY 46 41 81 N18G26 29.89R GWINNER CLOUDY 46 46 100 N23G30 29.87S SHEYENNE NWR N/A 47 45 93 N12 29.95S BUFFALO NOT AVBL WYNDMERE NOT AVBL ***** THE ABOVE OBSERVATIONS ARE NON NWS ARE NOT QUALITY CONTROLLED AND MAY MIS-REPORT RAIN FOR SNOW... $$ ***** WEATHER ACROSS NORTHERN MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS FLAG ISLAND NOT AVBL WARROAD NOT AVBL ROSEAU NOT AVBL HALLOCK NOT AVBL THF RVR FALLS CLOUDY 47 41 80 N13 29.91R HALSTAD NOT AVBL FOSSTON NOT AVBL BAUDETTE CLOUDY 47 42 83 N9 29.90S WASKISH NOT AVBL CROOKSTON NOT AVBL $$ ***** WEATHER ACROSS CENTRAL AND WEST MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS BEMIDJI NOT AVBL PARK RAPIDS CLOUDY 55 43 63 N14G20 29.80F WADENA NOT AVBL DETROIT LAKES NOT AVBL MOORHEAD NOT AVBL FERGUS FALLS NOT AVBL ELBOW LAKE NOT AVBL MORRIS MN NOT AVBL STAPLES NOT AVBL WHEATON NOT AVBL $$ ***** WEATHER ELSEWHERE ACROSS MINNESOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS DULUTH CLOUDY 54 47 77 N7 29.80S INTRNTL FALLS CLOUDY 49 41 74 NE7 29.87R ELY NOT AVBL CLOQUET NOT AVBL BRAINERD CLOUDY 59 45 59 NW9G18 29.79F HIBBING CLOUDY 54 45 71 N12 29.81S ALEXANDRIA CLOUDY 60 47 61 N13 29.79R SAINT CLOUD CLOUDY 59 49 69 NE8 29.78S MINNEAPOLIS CLOUDY 59 54 83 VRB5 29.78R $$ ***** WEATHER ACROSS SOUTH DAKOTA ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS SIOUX FALLS DRIZZLE 54 51 90 NE8 29.79F FOG BROOKINGS CLOUDY 51 46 83 N9 29.84R WATERTOWN LGT RAIN 47 45 93 N10 29.87R HURON LGT RAIN 48 45 89 N13G22 29.87R SISSETON N/A 48 45 89 N15 29.85R ABERDEEN CLOUDY 47 41 80 NE12 29.94R MITCHELL LGT RAIN 49 45 86 N12 29.86S PIERRE RAIN 44 41 89 N15 29.92R FOG MOBRIDGE LGT RAIN 43 40 89 N13G23 29.91S RAPID CITY LGT RAIN 40 38 93 N22 30.00R $$ ***** SOME WEATHER IN NEARBY STATES ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS GLASGOW MT LGT RAIN 41 32 70 N10 30.14R GREAT FALLS MT CLOUDY 48 25 40 CALM 30.15S CHEYENNE WY LGT SNOW 35 33 92 N14G24 29.93R FOG SCOTTSBLUFF NE LGT RAIN 43 40 89 NE13 29.94R OMAHA NE CLOUDY 64 57 78 NE7 29.72F DES MOINES IA PTSUNNY 74 62 66 SE13 29.78F DAVENPORT IA PTSUNNY 74 63 68 SW13 29.83F CHICAGO IL PTSUNNY 79 63 57 SW18G31 29.83S EAU CLAIRE WI CLOUDY 74 61 63 SW8 29.75R LA CROSSE WI FAIR 80 63 55 SW14 29.74F $$ ***** SOME NATIONAL WEATHER ***** CITY SKY/WX TMP DP RH WIND PRES REMARKS LA GUARDIA NY FAIR 82 61 48 S21G31 30.11F RALEIGH NC FAIR 96 61 31 SW14G21 30.20F HX 96 ATLANTA GA FAIR 86 64 47 SE12G20 30.21F NEW ORLEANS LA PTSUNNY 88 72 58 SE15G22 30.06F HX 94 OKLAHOMA CITY PTSUNNY 88 69 53 S30G44 29.74F HX 92 ALBUQUERQUE NM FAIR 79 10 7 W16G32 29.81F SALT LAKE CITY PTSUNNY 5129 42 N12 30.01S LOS ANGELES CA FAIR 70 54 56 SW14G24 29.90S BOISE ID FAIR 64 22 20 NW21G32 30.05F SEATTLE WA PTSUNNY 59 45 59 W7 30.26S $$ *** WEATHER ACROSS MANITOBA...SASKATCHEWAN AND ONTARIO *** ***ONTARIO*** CITY SKY/WX TMP DP RH WIND PRES REMARKS GERALDTON NOT AVBL THUNDER BAY CLOUDY 50 45 81 E12 29.84R SIOUX LOOKOUT CLOUDY 41 36 81 E10G21 29.94R TORONTO MOSUNNY 88 59 37 SW24G32 29.93F BIG TROUT LK PTSUNNY 41 27 56 E8G17 30.17F PICKLE LAKE CLOUDY 36 34 93 E13G29 30.01 DRYDEN CLOUDY 41 37 87 NE12G20 29.92R KENORA CLOUDY 43 37 81 NE8 29.94R $$ *** MANITOBA*** CITY SKY/WX TMP DP RH WIND PRES REMARKS BRANDON CLOUDY 41 36 81 NE14 30.05R DAUPHIN CLOUDY 41 34 75 N16G24 30.10R ISLAND LAKE CLOUDY 43 23 45 E12G18 30.16F PILOT MOUND N/A 41 37 87 N15 N/A THE PAS PTSUNNY 46 23 39 N8 30.18S THOMPSON PTSUNNY 45 23 42 N7 30.19F WINNIPEG CLOUDY 43 39 87 NE17G24 30.00R LYNN LAKE MOSUNNY 45 27 49 VRB3 30.16F CHURCHILL FLURRIES 23 16 74 N7 30.35F WCI 15 GILLAM PTSUNNY 36 18 48 NE7 30.26F $$ ***SASKATCHEWAN*** CITY SKY/WX TMP DP RH WIND PRES REMARKS ESTEVAN CLOUDY 43 36 75 N8 30.08R KINDERSLEY PTSUNNY 52 32 46 W20G28 30.08F LLOYDMINSTER PTSUNNY 54 37 54 SW14G21 30.05R PRINCE ALBERT MOSUNNY 50 19 29 VRB2 30.14S REGINA CLOUDY 39 36 87 N6 30.13S YORKTON CLOUDY 41 36 81 NW10 30.13S  124 NZUS99 KBOU 182036 OPUAPA Developmental Probabilistic Snow Accumulation Forecast (APA) National Weather Service Denver/Boulder, Colorado 1436 MDT Monday, May 18, 2026 -------------------------------------------------------------------------------- This developmental product contains the probabilities (%) that the given snow amounts (inches) will occur at Centennial Airport during the respective 3 hour or 12 hour periods. The probabilities indicate the amount of snow that is expected to accumulate on runways and other concrete surfaces at APA. [T (trace) means more than zero.] -------------------------------------------------------------------------------- Discussion (18/15-19/18 MDT): Rain will diminish through the early evening hours, and there's just a 30% chance of a few snowflakes mixing in during the evening hours. Any lingering showers will end overnight. No snow accumulation will occur due to warm air and pavement temperatures. 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 18/15-18/18 | 100 0 0 0 18/18-18/21 | 100 0 0 0 18/21-19/00 | 100 0 0 0 19/00-19/03 | 100 0 0 0 19/03-19/06 | 100 0 0 0 18/18-19/06 | 0 19/06-19/09 | 100 0 0 0 19/09-19/12 | 100 0 0 0 19/12-19/15 | 100 0 0 0 19/15-19/18 | 100 0 0 0 19/06-19/18 | 0 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 19/18-19/21 | 100 0 0 0 19/21-20/00 | 100 0 0 0 20/00-20/03 | 100 0 0 0 20/03-20/06 | 100 0 0 0 19/18-20/06 | 0 20/06-20/09 | 100 0 0 0 20/09-20/12 | 100 0 0 0 20/12-20/15 | 100 0 0 0 20/15-20/18 | 100 0 0 0 20/06-20/18 | 0