549
ASUS43 KLOT 211406
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 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.
ILZ001-002-007-009-015-016-024-211500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 53 38 56 E15G22 30.24F TC 12
STERLING* PTSUNNY 54 37 52 E20 30.27F TC 12
SAVANNA* CLOUDY 50 32 50 NE15G22 30.29F TC 10
ILZ003-004-008-010-011-017-018-211500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 51 34 52 NE8 30.34R TC 11
FREEPORT* CLOUDY 49 35 57 E13 30.33F TC 10
ROCHELLE* PTSUNNY 54 36 50 NE13G20 30.31S TC 12
DE KALB* PTSUNNY 53 40 62 E10 30.32S TC 12
PERU* PTSUNNY 55 41 58 E14 30.28S TC 13
ILZ005-006-012>014-019>023-211500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 49 39 68 NE12 30.31S TC 9
CHICAGO-MIDWAY CLOUDY 52 41 66 NE13 30.31S TC 11
AURORA PTSUNNY 53 41 63 NE13 30.30R TC 12
JOLIET* PTSUNNY 58 46 64 NE10 30.29F TC 15
WAUKEGAN MOSUNNY 47 37 68 NE14G22 30.33F TC 8
DUPAGE AIRPORT CLOUDY 52 41 66 NE15 30.30S TC 11
KANKAKEE* SUNNY 59 45 59 E15 30.27F TC 15
WHEELING CLOUDY 49 38 65 NE10 30.34F TC 9
MORRIS* CLOUDY 57 45 62 E8 30.28S TC 14
ROMEOVILLE* PTSUNNY 55 45 67 NE13 30.29F TC 13
LANSING* PTSUNNY 57 46 67 E8 30.29F TC 14
NORTHERLY ISL* N/A 49 41 74 N10 N/A TC 9
LMZ740>746-211500-
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 1024.7 3/ 4
WAUKEGAN HARBOR 46 48 350/ 14/ 17 1025.8 3/ 5
WILMETTE BUOY 47 80/ 16/ 21 1027.3R 4/ 5
CHICAGO BUOY 50 54 50/ 14/ 17 1025.1 3/ 4
HARRISON CRIB 48 40/ 12/ 13 N/A
NORTHERLY ISL 49 30/ 7/ 11 N/A
CALUMET HARBOR 51 20/ 7/ 11 1026.3
BURNS HARBOR 56 110/ 4/ 7 1026.4S
MICHIGAN CITY 54 90/ 8/ 10 1025.1F
ST. JOSEPH BUOY 54 100/ 10/ 14 1026.9R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-211500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 55 43 63 E10 30.19R TC 13
GALESBURG* PTSUNNY 54 41 62 E13 30.23F TC 12
MACOMB* PTSUNNY 55 45 69 E14 30.23F TC 13
JACKSONVILLE* MOSUNNY 55 44 66 NE13 30.19F TC 13
PITTSFIELD* SUNNY 56 44 64 NE9 30.19S TC 13
ILZ028>032-037-038-041>044-048-051>054-059>061-211500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 60 44 54 MISG 30.26S TC 16
BLOOMINGTON MOSUNNY 60 44 55 E22G30 30.23F TC 16
DECATUR SUNNY 59 48 67 NE14 30.19F TC 15
PEORIA CLOUDY 54 43 66 E12 30.23F TC 12
LACON* PTSUNNY 55 42 62 E8 30.25F TC 13
LINCOLN* MOSUNNY 61 47 60 NE14 30.21F TC 16
SPRINGFIELD MOSUNNY 58 46 64 NE10 30.20F TC 14
TAYLORVILLE SUNNY 59 48 67 E8 30.18F TC 15
ILZ033-039-045-046-055>057-062-063-211500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 60 46 59 E16G28 30.20F TC 16
DANVILLE* SUNNY 59 43 54 E16G25 30.22F TC 15
RANTOUL* SUNNY 59 42 52 E17G23 30.22F TC 15
MATTOON MOSUNNY 59 50 72 E18G25 30.16F TC 15
PARIS* PTSUNNY 59 47 64 E14 30.20F TC 15
ILZ079-100>102-211500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 59 50 72 NE12 30.17S TC 15
BELLEVILLE SUNNY 61 53 75 NE10 30.14R TC 16
CAHOKIA* SUNNY 60 50 69 N8 30.15F TC 16
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 63 54 72 NE8 30.11F TC 17
CAIRO* CLOUDY 64 60 86 NE7 30.10F TC 18
EFFINGHAM* CLOUDY 58 52 81 NE7 30.17F TC 14
MARION PTSUNNY 61 55 82 NE8 30.11F TC 16
MT. VERNON CLOUDY 59 51 75 NE12 30.14F TC 15
CENTRALIA* CLOUDY 59 51 74 NE6 30.15R TC 15
SALEM* CLOUDY 60 53 76 MISG 30.14F TC 16
METROPOLIS* CLOUDY 62 62 100 N6 30.11S TC 17
ILZ067-068-072-073-078-083-087-091-211500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 59 52 77 E20 30.15F TC 15
FLORA* CLOUDY 59 52 77 NE12G21 30.14F TC 15
FAIRFIELD* CLOUDY 59 51 76 NE10 30.12F TC 15
HARRISBURG* CLOUDY 62 57 86 E9 30.12F TC 17
ROBINSON* CLOUDY 61 52 72 E15 30.15F TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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