319
ASUS43 KLOT 210901
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM 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.
ILZ001-002-007-009-015-016-024-211000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 51 35 54 NE10 30.27S TC 11
STERLING* PTCLDY 49 34 56 NE10 30.30R TC 9
SAVANNA* MOCLDY 46 36 66 NE6 30.31R TC 8
ILZ003-004-008-010-011-017-018-211000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 46 32 58 N8 30.32R TC 8
FREEPORT* MOCLDY 45 37 75 NE8 30.33R TC 7
DE KALB* CLOUDY 47 33 58 NE13 30.29S TC 8
PERU* PTCLDY 46 36 66 N9 30.27R TC 8
ILZ005-006-012>014-019>023-211000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 50 34 54 N16 30.29R TC 10
CHICAGO-MIDWAY MOCLDY 51 36 56 NE13 30.28R TC 11
AURORA MOCLDY 47 37 68 NE15 30.26R TC 8
JOLIET* PTCLDY 53 36 52 NE10 30.27R TC 12
WAUKEGAN CLEAR 46 35 65 NE12G21 30.31R TC 8
DUPAGE AIRPORT MOCLDY 48 34 58 NE13 30.27R TC 9
KANKAKEE* CLEAR 46 40 77 NE7 30.25S TC 8
WHEELING MOCLDY 49 35 58 NE10G21 30.31R TC 9
MORRIS* PTCLDY 45 37 76 CALM 30.25R TC 7
LANSING* PTCLDY 49 41 74 NE6 30.26F TC 9
NORTHERLY ISL* N/A 51 39 63 NE16 N/A TC 11
LMZ740>746-211000-
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 48 1023.8R 3/ 4
WAUKEGAN HARBOR 48 49 350/ 16/ 19 1024.9R 3/ 5
WILMETTE BUOY 50 80/ 19/ 25 1026.1R 3/ 5
CHICAGO BUOY 52 54 50/ 19/ 25 1023.6R 4/ 5
HARRISON CRIB 51 50/ 22/ 24 N/A
NORTHERLY ISL 51 40/ 16/ 19 N/A
CALUMET HARBOR 51 30/ 12/ 15 1025.0
BURNS HARBOR 53 60/ 10/ 11 1025.1R
MICHIGAN CITY 51 60/ 9/ 10 1024.2R
ST. JOSEPH BUOY 51 50/ 12/ 16 1025.7R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-211000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 54 43 66 E13 30.20S TC 12
GALESBURG* PTCLDY 47 36 65 NE12G18 30.26S TC 8
MACOMB* CLOUDY 49 40 70 NE12 30.25S TC 10
JACKSONVILLE* CLOUDY 51 40 67 NE9 30.22R TC 11
ILZ028>032-037-038-041>044-048-051>054-059>061-211000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 46 37 71 MISG 30.25R TC 8
BLOOMINGTON CLEAR 45 36 70 NE9 30.24R TC 7
DECATUR PTCLDY 47 40 76 MISG 30.19S TC 8
PEORIA PTCLDY 48 35 60 NE9 30.24S TC 9
LINCOLN* CLOUDY 50 38 63 N8 30.23R TC 10
SPRINGFIELD CLOUDY 50 39 66 NE12 30.21R TC 10
TAYLORVILLE CLEAR 48 43 81 N7 30.20R TC 9
ILZ033-039-045-046-055>057-062-063-211000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 48 38 68 NE14 30.19S TC 9
DANVILLE* PTCLDY 48 42 77 N9 30.21R TC 9
MATTOON PTCLDY 49 43 80 NE9 30.16S TC 9
PARIS* CLOUDY 52 43 71 NE7 30.18R TC 11
ILZ079-100>102-211000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 55 45 71 CALM 30.18S TC 13
CAHOKIA* CLOUDY 57 48 72 N7 30.17R TC 14
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 62 58 87 NE8 30.09S TC 17
EFFINGHAM* MOCLDY 52 46 79 N5 30.17S TC 11
MT. VERNON MOCLDY 58 52 80 NE7 30.12F TC 14
CENTRALIA* PTCLDY 56 47 73 CALM 30.14R TC 13
SALEM* PTCLDY 55 47 74 MISG 30.14R TC 13
ILZ067-068-072-073-078-083-087-091-211000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 60 54 80 NE12 30.13S TC 16
FLORA* MOCLDY 55 48 76 N7 30.13F TC 13
FAIRFIELD* CLOUDY 59 52 77 N8 30.12S TC 15
HARRISBURG* CLOUDY 61 57 88 NE6 30.10F TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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