786
ASUS43 KLOT 190301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM CDT MON MAY 18 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR S TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-190400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 69 63 81 S9 29.86R TC 21
STERLING* MOCLDY 69 64 84 SE3 29.89R TC 21
SAVANNA* CLOUDY 70 64 80 S7 29.86R TC 21
ILZ003-004-008-010-011-017-018-190400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 69 63 81 S8 29.88R TC 21
FREEPORT* MOCLDY 68 64 88 S7 29.89R TC 20
DE KALB* PTCLDY 65 65 97 S12 29.89S TC 19
PERU* PTCLDY 68 63 83 S12 29.90S TC 20
ILZ005-006-012>014-019>023-190400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 68 63 84 S10G22 29.89S TC 20
CHICAGO-MIDWAY CLOUDY 69 63 81 S10 29.89F TC 21
AURORA MOCLDY 67 64 90 S13 29.88S TC 19
JOLIET* MOCLDY 67 65 93 S5 29.91R TC 20
WAUKEGAN MOCLDY 70 64 81 SW13G23 29.85S TC 21
DUPAGE AIRPORT MOCLDY 67 63 87 S10 29.89R TC 19
KANKAKEE* MOCLDY 66 63 87 S13G18 29.92F TC 19
WHEELING MOCLDY 69 64 84 S12 29.89S TC 21
MORRIS* MOCLDY 66 63 88 S7 29.90S TC 19
LANSING* MOCLDY 66 62 87 S12G18 29.92F TC 19
NORTHERLY ISL* N/A 68 62 81 S10 N/A TC 20
LMZ740>746-190400-
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 1009.2F 1/ 4
WAUKEGAN HARBOR 61 54 170/ 8/ 10 1012.1R 1/ 3
WILMETTE BUOY 63 180/ 10/ 14 1013.6R 1/ 3
CHICAGO BUOY 62 55 180/ 10/ 12 1011.6S 1/ 3
HARRISON CRIB 68 170/ 19/ 19 N/A
NORTHERLY ISL 69 190/ 10/ 17 N/A
CALUMET HARBOR 68 170/ 13/ 18 1013.2
BURNS HARBOR 68 190/ 9/ 13 1014.2R
MICHIGAN CITY 69 180/ 19/ 21 1012.5R
ST. JOSEPH BUOY 61 180/ 10/ 12 1014.5R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-190400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 68 62 81 S13G22 29.88 TC 20
GALESBURG* CLOUDY 65 60 82 S6 29.90R TC 19
MACOMB* PTCLDY 65 63 94 CALM 29.90R TC 18
JACKSONVILLE* CLEAR 65 61 86 S8 29.90R TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-190400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOCLDY 63 63 100 S6 29.94S TC 17
DECATUR MOCLDY 63 60 90 SE7 29.93R TC 17
PEORIA CLEAR 64 63 94 SE7 29.90R TC 18
LINCOLN* PTCLDY 64 64 100 CALM 29.92S TC 18
SPRINGFIELD PTCLDY 65 60 84 S9 29.91R TC 18
TAYLORVILLE MOCLDY 64 61 88 S5 29.93R TC 18
ILZ033-039-045-046-055>057-062-063-190400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 63 62 97 CALM 29.95F TC 17
DANVILLE* MOCLDY 67 63 85 S9 29.97F TC 20
MATTOON MOCLDY 67 62 84 MISG 29.95R TC 19
PARIS* CLOUDY 65 63 93 N9 29.97R TC 18
ILZ079-100>102-190400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 64 63 94 S14 29.96R TC 18
CAHOKIA* CLEAR 66 62 87 SE12 29.96R TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* PTCLDY 69 67 94 E10 30.04F TC 21
EFFINGHAM* MOCLDY 65 63 94 SE13G18 29.97R TC 18
MARION PTCLDY 66 64 94 SE14 30.03F TC 19
MT. VERNON MOCLDY 66 63 90 SE7 30.01S TC 19
CENTRALIA* MOCLDY 65 64 96 SE14G20 30.00R TC 18
SALEM* MOCLDY 67 64 91 MISG 29.99R TC 19
ILZ067-068-072-073-078-083-087-091-190400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 68 65 90 S18 30.01F TC 20
FLORA* MOCLDY 66 66 100 S15 30.00R TC 19
FAIRFIELD* MOCLDY 66 63 89 SE13G18 30.02F TC 19
HARRISBURG* MOCLDY 65 65 98 SE14 30.05F TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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