ASUS43 KLOT 181606 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 STERLING* MOSUNNY 70 66 87 SE9G16 29.79R TC 21 SAVANNA* PTSUNNY 71 63 76 S3 29.79R TC 22 $$ ILZ003-004-008-010-011-017-018-181700- NORTH CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ROCKFORD CLOUDY 69 65 86 SE10 29.79F TC 21 FREEPORT* PTSUNNY 71 69 94 SE7 29.80R TC 21 ROCHELLE* MOSUNNY 69 65 89 SE15 29.78F TC 20 DE KALB* CLOUDY 67 67 98 S10 29.80F TC 20 PERU* MOSUNNY 70 66 88 SE15G22 29.76F TC 21 $$ 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 TSTM 76 68 76 SW39G79 29.91R VSB 1/8 TC 24 AURORA LGT RAIN 67 66 97 E6 29.79F FOG TC 19 JOLIET* RAIN 70 69 98 W8G20 29.87R TC 21 WAUKEGAN CLOUDY 75 66 73 SW16 29.82S TC 24 DUPAGE AIRPORT TSTM 69 68 96 S10 29.84S FOG TC 21 KANKAKEE* HVY RAIN 68 65 91 W29G58 29.94R VSB 1 TC 20 WHEELING LGT RAIN 75 66 73 SW12 29.83F TC 24 MORRIS* TSTM 68 66 94 W5 29.84R TC 20 ROMEOVILLE* TSTM 72 70 94 SW17G35 29.88R FOG TC 22 LANSING* CLOUDY 80 67 64 S15G24 29.85F HX 82 TC 26 NORTHERLY ISL* N/A 77 64 64 S3 N/A TC 25 $$ LMZ740>746-181700- SOUTHERN LAKE MICHIGAN STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (F) (DEG/KT/KT) (MB) (MI) (FT/S) WINTHROP HARBOR 49 1017.0 2/ 4 WAUKEGAN HARBOR 66 51 210/ 12/ 17 1010.9 2/ 3 WILMETTE BUOY 67 210/ 10/ 16 1012.1F 1/ 3 CHICAGO BUOY 66 54 200/ 6/ 8 1009.4 1/ 3 HARRISON CRIB 75 200/ 18/ 20 N/A NORTHERLY ISL 76 190/ 11/ 19 N/A CALUMET HARBOR 78 180/ 6/ 10 1011.0F BURNS HARBOR 79 200/ 12/ 17 1011.9F MICHIGAN CITY 81 180/ 17/ 24 1009.8F ST. JOSEPH BUOY 65 190/ 10/ 14 1012.6F 2/ 3 $$ ILZ025>027-034>036-040-047-049-050-058-095>099-181700- WEST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS QUINCY RAIN 64 62 93 S13 29.92R TC 18 GALESBURG* CLOUDY 68 62 80 S10G17 29.80R TC 20 MACOMB* CLOUDY 68 64 85 S30G36 29.79R TC 20 JACKSONVILLE* CLOUDY 64 64 100 CALM 29.95R TC 18 PITTSFIELD* CLOUDY 65 64 99 S5 29.97R TC 18 $$ ILZ028>032-037-038-041>044-048-051>054-059>061-181700- CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS PONTIAC LGT RAIN 65 65 100 MISG 29.89F TC 19 BLOOMINGTON LGT RAIN 66 66 100 SE5 29.94F TC 19 DECATUR PTSUNNY 65 64 97 E3 29.97F THUNDER TC 18 PEORIA NOT AVBL LACON* PTSUNNY 67 63 89 SE12 29.78F TC 19 LINCOLN* LGT RAIN 67 67 100 SE3 29.93F TC 19 SPRINGFIELD LGT RAIN 67 64 90 SE7 29.95R TC 19 TAYLORVILLE CLOUDY 64 64 100 CALM 29.98F TC 18 $$ ILZ033-039-045-046-055>057-062-063-181700- EAST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHAMPAIGN TSTM 67 65 93 W23G30 30.00R TC 19 DANVILLE* N/A 73 70 90 S12G17 29.97R TC 23 RANTOUL* LGT RAIN 67 65 94 W9 29.98R TC 19 MATTOON CLOUDY 75 69 81 S10G22 29.97R TC 24 PARIS* TSTM 69 67 92 SW9G26 29.99R TC 21 $$ ILZ079-100>102-181700- SOUTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ALTON PTSUNNY 66 64 94 E10 29.98S THUNDER TC 19 BELLEVILLE LGT RAIN 70 66 88 CALM 29.96R TC 21 CAHOKIA* CLOUDY 67 66 97 N8 29.98S TC 19 $$ 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 CAIRO* PTSUNNY 84 70 63 S13G18 30.02S HX 88 TC 29 EFFINGHAM* RAIN 70 70 100 S10G17 30.01R TC 21 MARION PTSUNNY 81 72 74 S16G26 30.00S HX 84 TC 27 MT. VERNON TSTM 75 72 88 SW12G23 29.99S TC 24 CENTRALIA* TSTM 73 72 95 S12G17 29.98R TC 23 SALEM* TSTM 71 71 100 S9 29.98F TC 22 METROPOLIS* PTSUNNY 83 69 64 S7 30.04R HX 86 TC 28 $$ ILZ067-068-072-073-078-083-087-091-181700- SOUTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS LAWRENCEVILLE MOSUNNY 85 69 58 S24G33 29.99S HX 89 TC 29 FLORA* RAIN 70 66 88 SW6 29.99S TC 21 FAIRFIELD* CLOUDY 79 67 67 S15G22 29.99R HX 81 TC 26 HARRISBURG* PTSUNNY 81 69 66 SW12G18 30.01S HX 84 TC 27 ROBINSON* PTSUNNY 82 70 65 S17G24 29.97S HX 86 TC 28 $$ ABBREVIATIONS USED IN REMARKS TC - TEMPERATURE IN CELSIUS WCI - WIND CHILL INDEX HX - HEAT INDEX VSB - VISIBILITY $$