ASUS43 KLOT 181408 RWRIL ILLINOIS REGIONAL WEATHER ROUNDUP NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 900 AM CDT MON MAY 18 2026 NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY. * THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT REPORT WEATHER SUCH AS PRECIPITATION OR FOG. ILZ001-002-007-009-015-016-024-181500- NORTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS MOLINE LGT RAIN 65 62 90 SE22G31 29.74F TC 18 STERLING* LGT RAIN 68 63 84 W6 29.86R TC 20 SAVANNA* LGT RAIN 65 63 92 SE17 29.77F TC 18 $$ ILZ003-004-008-010-011-017-018-181500- NORTH CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ROCKFORD CLOUDY 71 67 87 S5 29.84R TC 22 FREEPORT* CLOUDY 67 66 95 S7 29.85R TC 20 ROCHELLE* PTSUNNY 74 64 69 SW15 29.86R TC 23 DE KALB* PTSUNNY 74 66 77 S15 29.85R TC 23 PERU* CLOUDY 75 66 73 SW9 29.86R TC 24 $$ ILZ005-006-012>014-019>023-181500- NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE CLOUDY 75 64 68 S13G23 29.84S TC 24 CHICAGO-MIDWAY CLOUDY 78 65 63 S20G29 29.85S HX 80 TC 26 AURORA PTSUNNY 74 67 78 S14G25 29.85R TC 23 JOLIET* CLOUDY 78 67 68 SW10G16 29.87R HX 80 TC 26 WAUKEGAN PTSUNNY 76 65 68 S17G26 29.82F TC 24 DUPAGE AIRPORT PTSUNNY 74 65 73 S13G22 29.84S TC 23 KANKAKEE* PTSUNNY 78 65 63 S17G25 29.89S HX 80 TC 26 WHEELING PTSUNNY 76 64 66 SW21G29 29.85F TC 24 MORRIS* CLOUDY 75 66 73 SW10 29.86R TC 24 ROMEOVILLE* CLOUDY 75 66 73 SW16G28 29.87R TC 24 LANSING* CLOUDY 77 65 65 SW14 29.88S TC 25 NORTHERLY ISL* N/A 77 62 59 SW18 N/A TC 25 $$ LMZ740>746-181500- SOUTHERN LAKE MICHIGAN STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (F) (DEG/KT/KT) (MB) (MI) (FT/S) WINTHROP HARBOR 49 1019.3 2/ 4 WAUKEGAN HARBOR 65 50 180/ 10/ 16 1011.2 1/ 4 HARRISON CRIB 75 200/ 21/ 25 N/A NORTHERLY ISL 76 190/ 13/ 20 N/A CALUMET HARBOR 76 170/ 13/ 19 1011.3 BURNS HARBOR 76 190/ 9/ 12 1012.2F MICHIGAN CITY 77 180/ 18/ 22 1010.4F ST. JOSEPH BUOY 63 190/ 10/ 12 1013.1R 2/ 3 $$ ILZ025>027-034>036-040-047-049-050-058-095>099-181500- WEST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS GALESBURG* RAIN 63 63 100 E9 29.87F TC 17 MACOMB* RAIN 65 65 100 CALM 29.93S TC 18 JACKSONVILLE* CLOUDY 64 64 100 N13G25 29.93R TC 18 PITTSFIELD* CLOUDY 64 64 99 N7 29.94R TC 18 $$ ILZ028>032-037-038-041>044-048-051>054-059>061-181500- CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS PONTIAC PTSUNNY 78 67 68 MISG 29.87R HX 80 TC 26 BLOOMINGTON LGT RAIN 75 68 78 S25G31 29.87S TC 24 DECATUR CLOUDY 75 66 73 MISG 29.90S TC 24 PEORIA TSTM 70 66 87 W32G49 29.90R FOG TC 21 LACON* TSTM 71 66 83 W5 29.84S TC 22 LINCOLN*CLOUDY 76 69 77 S16G25 29.86S TC 25 SPRINGFIELD RAIN 66 63 90 NW18G33 29.95R FOG TC 19 TAYLORVILLE CLOUDY 73 68 83 S17G23 29.90S TC 23 $$ ILZ033-039-045-046-055>057-062-063-181500- EAST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHAMPAIGN PTSUNNY 76 66 71 S25G36 29.92S TC 24 DANVILLE* MOSUNNY 81 66 60 S26G36 29.94S HX 83 TC 27 RANTOUL* PTSUNNY 76 66 70 S18G30 29.92R TC 25 MATTOON PTSUNNY 75 65 70 S14G30 29.96R TC 24 PARIS* MOSUNNY 80 65 60 S24G31 29.97S HX 82 TC 27 $$ ILZ079-100>102-181500- SOUTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ALTON PTSUNNY 77 70 78 NW18G24 29.95R THUNDER TC 25 BELLEVILLE LGT RAIN 77 73 88 SW13 29.92R TC 25 CAHOKIA* PTSUNNY 79 70 74 S12G21 29.92R HX 82 TC 26 $$ ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181500- SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE PTSUNNY 79 69 71 SW14G24 29.98R HX 81 TC 26 CAIRO* CLOUDY 80 71 71 SW15G23 30.02R HX 84 TC 27 EFFINGHAM* MOSUNNY 76 68 78 S10G20 29.98S TC 24 MARION PTSUNNY 81 70 69 SW14G23 29.99R HX 84 TC 27 MT. VERNON PTSUNNY 78 69 73 S14G20 29.98S HX 80 TC 26 CENTRALIA* MOSUNNY 79 69 73 S15G21 29.96F HX 81 TC 26 SALEM* PTSUNNY 78 70 75 S13 29.96F HX 81 TC 26 METROPOLIS* MOSUNNY 81 69 67 S10G18 30.03R HX 84 TC 27 $$ ILZ067-068-072-073-078-083-087-091-181500- SOUTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS LAWRENCEVILLE SUNNY 80 68 66 S13 30.00S HX 83 TC 27 FLORA* SUNNY 79 68 69 S16 29.98F HX 81 TC 26 FAIRFIELD* SUNNY 80 67 64 S13G20 30.00R HX 82 TC 26 HARRISBURG* SUNNY 80 69 69 SW13G20 30.02R HX 83 TC 27 ROBINSON* MOSUNNY 79 68 69 S13G20 29.99R HX 81 TC 26 $$ ABBREVIATIONS USED IN REMARKS TC - TEMPERATURE IN CELSIUS WCI - WIND CHILL INDEX HX - HEAT INDEX VSB - VISIBILITY $$