472
ASUS43 KLOT 200901
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM CDT WED MAY 20 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.
ILZ001-002-007-009-015-016-024-201000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 49 41 74 NW8 30.22R TC 9
STERLING* PTCLDY 49 45 86 NW5 30.22R TC 9
SAVANNA* PTCLDY 48 42 81 CALM 30.22S TC 9
ILZ003-004-008-010-011-017-018-201000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 47 42 83 NW7 30.21R TC 8
FREEPORT* PTCLDY 46 45 95 N6 30.23R TC 8
ROCHELLE* PTCLDY 47 42 84 N5 30.21R TC 8
DE KALB* PTCLDY 48 42 80 N9 30.21R TC 9
PERU* MOCLDY 52 46 82 NW8 30.20R TC 11
ILZ005-006-012>014-019>023-201000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 54 42 64 N14G21 30.17R TC 12
CHICAGO-MIDWAY CLOUDY 56 43 61 N14 30.17R TC 13
AURORA PTCLDY 49 45 86 N10 30.18R TC 9
JOLIET* MOCLDY 56 48 75 N7 30.17R TC 13
WAUKEGAN CLEAR 49 43 80 NW5 30.18R TC 9
DUPAGE AIRPORT MOCLDY 52 43 71 N15 30.18R TC 11
KANKAKEE* CLOUDY 56 49 75 NW9 30.16R TC 14
WHEELING MOCLDY 53 43 68 N8 30.19R TC 12
MORRIS* CLOUDY 54 46 76 N7 30.17R TC 12
LANSING* CLOUDY 55 46 71 N13G18 30.18R TC 13
NORTHERLY ISL* N/A 55 44 66 N9 N/A TC 13
LMZ740>746-201000-
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 47 1019.9R 1/ 3
WAUKEGAN HARBOR 52 51 280/ 6/ 8 1021.2R 1
WILMETTE BUOY 54 20/ 14/ 19 1022.2R 2/ 3
CHICAGO BUOY 55 53 350/ 16/ 19 1020.4R 2/ 3
HARRISON CRIB 55 350/ 17/ 20 N/A
NORTHERLY ISL 56 350/ 11/ 14 N/A
CALUMET HARBOR 55 340/ 12/ 16 1021.2R
BURNS HARBOR 53 20/ 8/ 9 1021.7R
MICHIGAN CITY 53 360/ 10/ 12 1020.8R
ST. JOSEPH BUOY 51 350/ 12/ 16 1021.4R 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-201000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 51 46 83 N12 30.22S TC 11
GALESBURG* MOCLDY 47 42 83 NW5 30.23S TC 8
MACOMB* MOCLDY 50 47 88 CALM 30.25R TC 10
JACKSONVILLE* MOCLDY 53 46 77 N13 30.19R TC 12
PITTSFIELD* CLOUDY 54 48 80 N10G16 30.21R TC 12
ILZ028>032-037-038-041>044-048-051>054-059>061-201000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOCLDY 54 49 83 MISG 30.18R TC 12
BLOOMINGTON MOCLDY 53 48 83 N14 30.17S TC 12
DECATUR MOCLDY 55 49 80 MISG 30.17R TC 13
PEORIA MOCLDY 52 44 74 N7G16 30.19S TC 11
LACON* MOCLDY 51 44 76 N6 30.19S TC 11
LINCOLN* CLOUDY 55 48 76 N7 30.18R TC 13
SPRINGFIELD CLOUDY 54 47 77 N8 30.17S TC 12
TAYLORVILLE CLOUDY 55 52 88 N10 30.18R TC 13
ILZ033-039-045-046-055>057-062-063-201000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 55 50 83 N14 30.15R TC 13
DANVILLE* PTCLDY 58 53 82 NW9 30.14S TC 14
MATTOON PTCLDY 58 53 84 N9 30.13S TC 14
PARIS* MOCLDY 58 53 81 NW6 30.14R TC 15
ILZ079-100>102-201000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 58 51 77 N6 30.18R TC 14
BELLEVILLE CLOUDY 60 55 84 N12 30.14R TC 16
CAHOKIA* CLOUDY 60 53 77 N10 30.16S TC 16
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-201000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 71 70 96 N10G16 30.09R TC 22
EFFINGHAM* MOCLDY 60 56 88 NW8 30.14S TC 15
MT. VERNON MOCLDY 62 59 90 VRB7 30.12F TC 17
CENTRALIA* CLOUDY 62 56 83 N8 30.14S TC 17
SALEM* CLOUDY 62 58 87 MISG 30.13F TC 17
METROPOLIS* LGT RAIN 70 70 100 N3 30.09R TC 21
ILZ067-068-072-073-078-083-087-091-201000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 64 61 90 N9 30.10R TC 18
FLORA* LGT RAIN 61 57 88 N6 30.13R TC 16
FAIRFIELD* CLOUDY 63 61 93 N6 30.12R TC 17
HARRISBURG* CLOUDY 68 64 89 N6 30.10R TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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