ASUS43 KLOT 181311 RWRIL ILLINOIS REGIONAL WEATHER ROUNDUP NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 800 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. ILZ001-002-007-009-015-016-024-181400- NORTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS MOLINE RAIN 65 63 93 SE3 29.86R FOG TC 18 STERLING* PTSUNNY 69 62 78 NE6 29.84R TC 21 SAVANNA* CLOUDY 65 62 87 SE7 29.83R TC 19 $$ ILZ003-004-008-010-011-017-018-181400- NORTH CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ROCKFORD CLOUDY 70 66 87 CALM 29.82F TC 21 FREEPORT* CLOUDY 66 64 95 CALM 29.84R TC 19 ROCHELLE* PTSUNNY 74 64 69 SW7 29.83R TC 23 DE KALB* PTSUNNY 73 65 76 S16 29.85S TC 23 PERU* CLOUDY 73 66 78 S6 29.84S TC 23 $$ ILZ005-006-012>014-019>023-181400- NORTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHICAGO-OHARE LGT RAIN 76 63 64 SW10G22 29.84R TC 24 CHICAGO-MIDWAY CLOUDY 76 64 66 SW17G28 29.85S TC 24 AURORA CLOUDY 69 67 93 S8 29.85R TC 21 JOLIET* PTSUNNY 75 65 69 S15G22 29.85F TC 24 WAUKEGAN CLOUDY 73 64 73 SW14G20 29.83S TC 23 DUPAGE AIRPORT LGT RAIN 72 64 76 S10G23 29.84R TC 22 KANKAKEE* PTSUNNY 76 63 64 S18G26 29.90R TC 24 WHEELING CLOUDY 75 64 68 SW12G18 29.86R TC 24 MORRIS* PTSUNNY 75 63 64 S15G21 29.84R TC 24 ROMEOVILLE* PTSUNNY 75 66 73 S17G32 29.86S TC 24 LANSING* CLOUDY 75 63 66 SW14 29.88S TC 24 NORTHERLY ISL* N/A 75 61 61 SW13 N/A TC 24 $$ LMZ740>746-181400- SOUTHERN LAKE MICHIGAN STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (F) (DEG/KT/KT) (MB) (MI) (FT/S) WINTHROP HARBOR 49 1015.2 2/ 4 WAUKEGAN HARBOR 66 50 210/ 10/ 14 1011.2 2/ 4 HARRISON CRIB 75 200/ 25/ 27 N/A NORTHERLY ISL 75 180/ 16/ 20 N/A CALUMET HARBOR 74 190/ 9/ 16 1011.3S BURNS HARBOR 74 190/ 11/ 14 1012.5S MICHIGAN CITY 76 180/ 16/ 20 1010.5F ST. JOSEPH BUOY 64 180/ 12/ 14 1013.0F 2/ 3 $$ ILZ025>027-034>036-040-047-049-050-058-095>099-181400- WEST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS QUINCY RAIN 64 62 93 NW3 29.93R FOG TC 18 GALESBURG* HVY RAIN 64 62 91 SW10 29.94R TC 18 MACOMB* RAIN 65 65 100 CALM 29.92R TC 18 JACKSONVILLE* CLOUDY 75 68 78 S18G26 29.85R TC 24 PITTSFIELD* CLOUDY 64 64 97 N9 29.93R TC 18 $$ ILZ028>032-037-038-041>044-048-051>054-059>061-181400- CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS PONTIAC CLOUDY 76 65 69 MISG 29.86F TC 24 BLOOMINGTON PTSUNNY 75 67 76 S24G32 29.87S TC 24 DECATUR CLOUDY 73 66 78 S21G29 29.90R TC 23 PEORIA CLOUDY 74 66 76 S12 29.84R TC 23 LACON* CLOUDY 73 65 77 SW5 29.84R TC 23 LINCOLN* CLOUDY 76 67 75 S20G26 29.86S TC 24 SPRINGFIELD CLOUDY 76 67 73 S22G37 29.85S TC 24 TAYLORVILLE CLOUDY 73 66 78 S17G23 29.90S TC 23 $$ ILZ033-039-045-046-055>057-062-063-181400- EAST-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CHAMPAIGN PTSUNNY 77 65 66 S24 29.92S TC 25 DANVILLE* MOSUNNY 77 65 64 S20G25 29.95S TC 25 RANTOUL* PTSUNNY 76 65 67 S22G30 29.91S TC 25 MATTOON PTSUNNY 74 64 71 S16G26 29.94F TC 23 PARIS* MOSUNNY 76 63 65 S16 29.97F TC 24 $$ ILZ079-100>102-181400- SOUTHWEST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS ALTON CLOUDY 75 68 78 S15G23 29.90R TC 24 BELLEVILLE PTSUNNY 78 72 81 S14 29.90R HX 80 TC 26 CAHOKIA* PTSUNNY 77 69 76 S8 29.90R TC 25 $$ ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181400- SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE MOSUNNY 79 69 71 S15G28 29.96S HX 81 TC 26 CAIRO* MOSUNNY 80 71 73 S16 30.00S HX 83 TC 27 EFFINGHAM* MOSUNNY 73 65 77 SE10 29.98S TC 23 MARION SUNNY 79 70 73 S12 29.97F HX 81 TC 26 MT. VERNON SUNNY 77 68 73 S12 29.98R TC 25 CENTRALIA* MOSUNNY 77 67 71 CALM 29.97R TC 25 SALEM* MOSUNNY 76 67 74 S7 29.96S TC 24 METROPOLIS* MOSUNNY 78 68 70 S13 30.00S HX 80 TC 26 $$ ILZ067-068-072-073-078-083-087-091-181400- SOUTHEAST ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS LAWRENCEVILLE SUNNY 76 65 68 S14 30.00R TC 24 FLORA* SUNNY 75 66 73 S14 29.98R TC 24 FAIRFIELD* SUNNY 77 64 64 S16 29.99R TC 25 HARRISBURG* SUNNY 78 67 69 S10G16 29.99S HX 80 TC 25 ROBINSON* PTSUNNY 75 66 73 S12G18 29.99R TC 24 $$ ABBREVIATIONS USED IN REMARKS TC - TEMPERATURE IN CELSIUS WCI - WIND CHILL INDEX HX - HEAT INDEX VSB - VISIBILITY $$