ASUS43 KLOT 181501 RWRIL ILLINOIS REGIONAL WEATHER ROUNDUP NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1000 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. ILZ001-002-007-009-015-016-024-181600- NORTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS MOLINE MOSUNNY 67 63 87 SE14 29.75R TC 19 $$ ILZ003-004-008-010-011-017-018-181600- NORTH CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ROCKFORD LGT RAIN 70 66 87 SE9 29.82F TC 21 PERU* HVY RAIN 70 66 88 W14G28 29.91R TC 21 $$ ILZ005-006-012>014-019>023-181600- NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE CLOUDY 76 65 68 S13G28 29.84S TC 24 CHICAGO-MIDWAY CLOUDY 78 66 66 SW16 29.85S HX 80 TC 26 AURORA PTSUNNY 73 67 81 S10 29.84F TC 23 WAUKEGAN PTSUNNY 76 66 71 SW20G31 29.82S TC 24 DUPAGE AIRPORT PTSUNNY 75 66 73 S12 29.84S TC 24 WHEELING PTSUNNY 76 65 68 SW16G26 29.85S TC 24 MORRIS* CLOUDY 75 66 73 SW10G18 29.84F TC 24 ROMEOVILLE* CLOUDY 79 68 69 S17G25 29.87S HX 81 TC 26 NORTHERLY ISL* N/A 76 64 66 SW10 N/A TC 24 $$ LMZ740>746-181600- SOUTHERN LAKE MICHIGAN STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (F) (DEG/KT/KT) (MB) (MI) (FT/S) WINTHROP HARBOR 49 1019.3R 2/ 4 WAUKEGAN HARBOR 65 51 180/ 10/ 14 1010.9F 2/ 4 WILMETTE BUOY 66 210/ 10/ 16 1012.4 1/ 3 CHICAGO BUOY 69 54 220/ 14/ 17 1010.0R 2/ 2 HARRISON CRIB 77 210/ 20/ 24 N/A NORTHERLY ISL 78 190/ 10/ 20 N/A CALUMET HARBOR 78 190/ 10/ 19 1011.3 BURNS HARBOR 78 200/ 12/ 14 1012.2S MICHIGAN CITY 79 180/ 17/ 22 1010.3F ST. JOSEPH BUOY 65 190/ 12/ 14 1013.0S 2/ 4 $$ ILZ025>027-034>036-040-047-049-050-058-095>099-181600- WEST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS $$ ILZ028>032-037-038-041>044-048-051>054-059>061-181600- CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS BLOOMINGTON CLOUDY 66 66 100 W18G26 29.95R TC 19 DECATUR CLOUDY 75 68 78 S24G30 29.97R TC 24 PEORIA NOT AVBL SPRINGFIELD RAIN 65 63 93 NW7 29.94S TC 18 TAYLORVILLE CLOUDY 72 64 78 NW36G66 29.95R TC 22 $$ ILZ033-039-045-046-055>057-062-063-181600- EAST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHAMPAIGN CLOUDY 75 68 78 S25G37 29.92F TC 24 MATTOON TSTM 72 69 90 S10G35 29.94F FOG TC 22 $$ ILZ079-100>102-181600- SOUTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ALTON TSTM 66 64 94 NW9 29.99R TC 19 CAHOKIA* PTSUNNY 72 64 76 N23G33 29.95R TC 22 $$ ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181600- SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE LGT RAIN 77 71 82 SW13G22 29.99S TC 25 MARION PTSUNNY 79 70 73 S14G23 30.00R HX 81 TC 26 MT. VERNON PTSUNNY 79 70 73 SW18G24 29.98S THUNDER HX 81 $$ ILZ067-068-072-073-078-083-087-091-181600- SOUTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS LAWRENCEVILLE MOSUNNY 82 69 64 S17G29 29.99F HX 85 TC 28 $$ ABBREVIATIONS USED IN REMARKS TC - TEMPERATURE IN CELSIUS WCI - WIND CHILL INDEX HX - HEAT INDEX VSB - VISIBILITY $$