735
ASUS43 KLOT 220301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 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.
ILZ001-002-007-009-015-016-024-220400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 61 45 55 E15G23 30.13R TC 16
STERLING* MOCLDY 57 40 52 E17G23 30.18R TC 14
SAVANNA* MOCLDY 55 42 60 NE9 30.18R TC 13
ILZ003-004-008-010-011-017-018-220400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 52 35 52 NE7G17 30.22R TC 11
FREEPORT* MOCLDY 53 42 67 E10 30.22S TC 12
DE KALB* MOCLDY 52 37 58 NE12 30.21S TC 11
PERU* MOCLDY 57 41 54 E13 30.17R TC 14
ILZ005-006-012>014-019>023-220400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 51 39 63 NE13 30.21S TC 11
CHICAGO-MIDWAY CLOUDY 53 40 61 NE8 30.21S TC 12
AURORA MOCLDY 53 37 54 NE14 30.19S TC 12
JOLIET* CLOUDY 55 39 56 NE14 30.19F TC 13
WAUKEGAN MOCLDY 48 40 73 NE10 30.22F TC 9
DUPAGE AIRPORT CLOUDY 52 37 56 NE9 30.20S TC 11
KANKAKEE* CLOUDY 54 42 63 NE13 30.19S TC 12
WHEELING MOCLDY 50 40 68 NE9 30.23S TC 10
MORRIS* CLOUDY 54 37 54 E7 30.18S TC 12
LANSING* CLOUDY 51 43 72 NE6 30.21S TC 11
NORTHERLY ISL* N/A 49 41 74 N14 N/A TC 9
LMZ740>746-220400-
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 50 1021.9S 3/ 4
WAUKEGAN HARBOR 49 50 340/ 14/ 19 1022.3F 3/ 4
WILMETTE BUOY 49 60/ 16/ 21 1023.3F 4/ 4
CHICAGO BUOY 51 55 350/ 12/ 16 1021.8R 3/ 4
HARRISON CRIB 50 360/ 15/ 17 N/A
NORTHERLY ISL 50 350/ 10/ 16 N/A
CALUMET HARBOR 51 350/ 8/ 12 1023.2
BURNS HARBOR 53 60/ 4/ 5 1023.4R
MICHIGAN CITY 54 100/ 4/ 5 1022.1R
ST. JOSEPH BUOY 60 100/ 8/ 10 1023.6R 2/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-220400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 64 46 52 E12 30.08R TC 18
GALESBURG* MOCLDY 62 45 54 E12G21 30.14R TC 17
MACOMB* MOCLDY 61 44 53 CALM 30.13S TC 16
JACKSONVILLE* CLOUDY 63 49 60 E9 30.10R TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-220400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 61 44 53 NE15 30.15R TC 16
DECATUR CLOUDY 62 47 57 E10 30.12R TC 17
PEORIA CLOUDY 62 45 53 E14G24 30.13R TC 17
SPRINGFIELD CLOUDY 65 46 50 E12 30.10R TC 18
TAYLORVILLE CLOUDY 64 52 63 E8 30.10S TC 18
ILZ033-039-045-046-055>057-062-063-220400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 62 44 51 E14 30.13R TC 17
DANVILLE* CLOUDY 63 42 45 E9G17 30.16S TC 17
MATTOON CLOUDY 64 50 60 E7 30.10S TC 18
PARIS* CLOUDY 63 46 54 E9 30.13R TC 17
ILZ079-100>102-220400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 63 55 77 E5 30.08S TC 17
CAHOKIA* CLOUDY 64 56 75 E5 30.07S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 64 60 87 CALM 30.06R TC 18
CAIRO* CLOUDY 66 62 86 E9 30.04S TC 19
EFFINGHAM* CLOUDY 64 58 80 NE6 30.11S TC 18
MT. VERNON CLOUDY 64 58 80 NE6 30.07S TC 18
CENTRALIA* CLOUDY 64 57 77 CALM 30.08S TC 18
SALEM* CLOUDY 65 59 79 MISG 30.08S TC 19
ILZ067-068-072-073-078-083-087-091-220400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 66 54 65 NE8 30.09R TC 19
FLORA* CLOUDY 64 59 82 NE5 30.09R TC 18
FAIRFIELD* CLOUDY 65 58 78 NE6 30.07S TC 18
HARRISBURG* CLOUDY 65 61 86 E3 30.06S TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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