812
ASUS43 KLOT 220201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM CDT THU MAY 21 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.
ILZ001-002-007-009-015-016-024-220300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 64 45 49 E13 30.11S TC 18
STERLING* MOCLDY 59 42 53 E15 30.17R TC 15
SAVANNA* MOCLDY 58 42 55 NE9 30.17S TC 14
ILZ003-004-008-010-011-017-018-220300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 54 39 57 NE6G17 30.21F TC 12
FREEPORT* MOCLDY 54 45 70 E9 30.22R TC 12
DE KALB* MOCLDY 53 38 56 NE10 30.21S TC 12
ILZ005-006-012>014-019>023-220300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 51 38 60 NE12 30.21S TC 11
CHICAGO-MIDWAY CLOUDY 53 38 56 NE10 30.21S TC 12
AURORA CLOUDY 54 37 52 NE16 30.19S TC 12
JOLIET* MOCLDY 55 38 53 NE10G17 30.19S TC 13
WAUKEGAN MOCLDY 47 38 71 N10 30.23S TC 8
DUPAGE AIRPORT MOCLDY 52 38 58 NE12 30.20S TC 11
KANKAKEE* CLOUDY 55 41 60 NE15 30.18R TC 13
WHEELING MOCLDY 50 38 63 NE9 30.23S TC 10
MORRIS* MOCLDY 55 39 54 NE6 30.18R TC 13
LANSING* CLOUDY 51 41 69 NE7 30.21S TC 10
NORTHERLY ISL* N/A 50 42 74 N12 N/A TC 10
LMZ740>746-220300-
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 51 1021.9F 3/ 4
WAUKEGAN HARBOR 48 50 340/ 17/ 21 1022.4S 3/ 4
WILMETTE BUOY 49 40/ 16/ 21 1023.6F 4/ 5
CHICAGO BUOY 52 55 360/ 16/ 21 1021.6F 3/ 4
HARRISON CRIB 51 10/ 18/ 19 N/A
NORTHERLY ISL 49 10/ 13/ 16 N/A
CALUMET HARBOR 51 340/ 9/ 12 1023.0
BURNS HARBOR 51 50/ 6/ 7 1023.0F
MICHIGAN CITY 53 50/ 9/ 10 1022.0F
ST. JOSEPH BUOY 56 70/ 6/ 8 1023.4S 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-220300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 66 46 48 E13 30.07R TC 19
GALESBURG* MOCLDY 64 46 52 E8 30.12R TC 18
MACOMB* MOCLDY 63 43 47 CALM 30.11S TC 17
JACKSONVILLE* CLOUDY 63 49 61 E8 30.09S TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-220300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 64 41 42 E14 30.13S TC 18
DECATUR CLOUDY 63 48 58 E13 30.11R TC 17
PEORIA MOCLDY 63 45 51 E15G24 30.12R TC 17
LACON* MOCLDY 61 43 51 E12G17 30.13S TC 16
LINCOLN* CLOUDY 66 46 47 E10 30.11R TC 19
SPRINGFIELD CLOUDY 64 46 52 E7 30.09S TC 18
TAYLORVILLE CLOUDY 64 48 55 E7 30.09S TC 18
ILZ033-039-045-046-055>057-062-063-220300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 63 44 50 E15 30.12S TC 17
DANVILLE* CLOUDY 64 42 43 E12 30.15S TC 18
MATTOON CLOUDY 64 51 62 E8 30.10R TC 18
PARIS* CLOUDY 63 47 56 E8 30.12S TC 17
ILZ079-100>102-220300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 64 55 72 NE7 30.08S TC 18
CAHOKIA* CLOUDY 64 56 75 E6 30.07R TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 65 59 81 NE6 30.04S TC 18
CAIRO* CLOUDY 66 62 86 NE12 30.03F TC 19
EFFINGHAM* CLOUDY 64 58 81 CALM 30.10S TC 18
MT. VERNON CLOUDY 64 57 78 NE5 30.07S TC 18
CENTRALIA* CLOUDY 64 57 77 CALM 30.07S TC 18
SALEM* CLOUDY 65 58 78 MISG 30.07S TC 19
ILZ067-068-072-073-078-083-087-091-220300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 67 56 67 E9 30.08R TC 19
FLORA* CLOUDY 64 57 77 NE5 30.08S TC 18
FAIRFIELD* CLOUDY 65 57 77 CALM 30.07R TC 18
HARRISBURG* CLOUDY 65 60 85 NE5 30.05S TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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