ASUS43 KLOT 181556 RWRIL ILLINOIS REGIONAL WEATHER ROUNDUP NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1100 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. ILZ001-002-007-009-015-016-024-181700- NORTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS MOLINE CLOUDY 70 63 78 VRB3 29.76R TC 21 $$ ILZ003-004-008-010-011-017-018-181700- NORTH CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ROCKFORD CLOUDY 69 65 86 SE10 29.79F TC 21 $$ ILZ005-006-012>014-019>023-181700- NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE CLOUDY 76 65 68 SW15 29.83F THUNDER TC 24 CHICAGO-MIDWAY NOT AVBL AURORA TSTM 67 66 97 CALM 29.82F FOG TC 19 WAUKEGAN CLOUDY 75 66 73 SW16 29.82S TC 24 DUPAGE AIRPORT TSTM 69 68 96 SW17G31 29.86R VSB 1 TC 21 WHEELING LGT RAIN 75 66 73 SW12 29.83F TC 24 MORRIS* TSTM 68 64 88 NW12G22 29.86R TC 20 ROMEOVILLE* TSTM 72 70 94 SW17G35 29.88R FOG TC 22 NORTHERLY ISL* N/A 77 64 64 S3 N/A TC 25 $$ LMZ740>746-181700- SOUTHERN LAKE MICHIGAN STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (F) (DEG/KT/KT) (MB) (MI) (FT/S) WINTHROP HARBOR 49 1018.5F 2/ 4 WAUKEGAN HARBOR 64 51 200/ 10/ 16 1011.0R 2/ 3 WILMETTE BUOY 67 200/ 14/ 19 1012.2F 1/ 3 CHICAGO BUOY 64 54 200/ 6/ 14 1009.8F 1/ 3 HARRISON CRIB 78 200/ 22/ 23 N/A NORTHERLY ISL 76 190/ 11/ 19 N/A CALUMET HARBOR 190/ 7/ 10 1010.9 BURNS HARBOR 80 200/ 13/ 17 1011.9F MICHIGAN CITY 81 180/ 16/ 19 1009.9F ST. JOSEPH BUOY 65 190/ 10/ 14 1012.7F 2/ 2 $$ ILZ025>027-034>036-040-047-049-050-058-095>099-181700- WEST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS $$ ILZ028>032-037-038-041>044-048-051>054-059>061-181700- CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS DECATUR PTSUNNY 65 64 97 W6 29.99S THUNDER FOG PEORIA NOT AVBL SPRINGFIELD LGT RAIN 67 64 90 SE7 29.95R TC 19 TAYLORVILLE CLOUDY 64 64 100 NW7 29.99R TC 18 $$ ILZ033-039-045-046-055>057-062-063-181700- EAST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHAMPAIGN TSTM 66 64 94 W20G28 30.00R TC 19 MATTOON CLOUDY 75 69 81 S12 29.97R TC 24 $$ ILZ079-100>102-181700- SOUTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ALTON TSTM 66 64 94 NE6 30.00R TC 19 BELLEVILLE LGT RAIN 70 66 88 CALM 29.96R TC 21 CAHOKIA* LGT RAIN 67 66 97 N9 29.97 TC 19 $$ ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181700- SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE PTSUNNY 80 70 71 S15G30 29.99S HX 83 TC 27 MARION PTSUNNY 81 72 74 S16G26 30.00S HX 84 TC 27 $$ ILZ067-068-072-073-078-083-087-091-181700- SOUTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS LAWRENCEVILLE MOSUNNY 85 69 58 S24G33 29.99S HX 89 TC 29 $$ ABBREVIATIONS USED IN REMARKS TC - TEMPERATURE IN CELSIUS WCI - WIND CHILL INDEX HX - HEAT INDEX VSB - VISIBILITY $$