558
ASUS43 KLOT 211606
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 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.
ILZ001-002-007-009-015-016-024-211700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 60 43 53 NE12G18 30.23F TC 16
STERLING* MOSUNNY 61 45 55 E17 30.25S TC 16
SAVANNA* PTSUNNY 59 36 43 E15 30.28S TC 15
ILZ003-004-008-010-011-017-018-211700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 57 38 48 NE12G21 30.28F TC 14
FREEPORT* PTSUNNY 58 36 44 E12 30.31R TC 14
ROCHELLE* PTSUNNY 60 43 53 E10G16 30.27F TC 16
DE KALB* MOSUNNY 59 45 59 E14G22 30.28F TC 15
PERU* MOSUNNY 63 45 51 E10G18 30.25S TC 17
ILZ005-006-012>014-019>023-211700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 52 41 66 NE9 30.29F TC 11
CHICAGO-MIDWAY CLOUDY 55 45 68 NE12 30.28F TC 13
AURORA MOSUNNY 59 46 62 E15 30.28F TC 15
JOLIET* SUNNY 61 49 63 NE12 30.27S TC 16
WAUKEGAN MOSUNNY 49 37 63 NE13G20 30.31F TC 9
DUPAGE AIRPORT CLOUDY 53 43 68 NE12 30.29F TC 12
KANKAKEE* MOSUNNY 64 47 53 E14 30.25F TC 18
WHEELING MOSUNNY 51 41 68 E10 30.32S TC 11
MORRIS* MOSUNNY 63 46 55 E8G16 30.25S TC 17
ROMEOVILLE* MOSUNNY 57 46 67 NE14 30.28F TC 14
LANSING* SUNNY 59 48 66 NE10 30.26F TC 15
NORTHERLY ISL* N/A 53 45 74 MISG N/A TC 12
LMZ740>746-211700-
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 1023.5 3/ 4
WAUKEGAN HARBOR 45 48 350/ 16/ 19 1024.9 2/ 4
WILMETTE BUOY 47 60/ 16/ 19 1026.4F 3/ 5
CHICAGO BUOY 50 54 360/ 14/ 17 1024.3 3/ 5
HARRISON CRIB 49 10/ 12/ 13 N/A
NORTHERLY ISL 51 360/ 9/ 11 N/A
CALUMET HARBOR 53 20/ 10/ 13 1025.7
BURNS HARBOR 52 20/ 7/ 9 1025.7F
MICHIGAN CITY 58 10/ 7/ 9 1024.7F
ST. JOSEPH BUOY 57 90/ 6/ 8 1026.5R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-211700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 60 48 64 E3 30.19S TC 16
GALESBURG* MOSUNNY 62 48 61 E9 30.23S TC 17
MACOMB* MOSUNNY 64 49 57 E8 30.23R TC 18
JACKSONVILLE* SUNNY 65 48 55 E17 30.18S TC 18
PITTSFIELD* SUNNY 63 49 60 NE6 30.20R TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-211700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOSUNNY 66 46 48 MISG 30.22F TC 19
BLOOMINGTON SUNNY 66 46 48 E21G29 30.21F TC 19
DECATUR SUNNY 66 48 52 E18G28 30.18S TC 19
PEORIA SUNNY 64 47 53 E15G24 30.21F TC 18
LACON* MOSUNNY 64 45 50 E14 30.22F TC 18
LINCOLN* MOSUNNY 66 47 49 NE14 30.20S TC 19
SPRINGFIELD SUNNY 67 47 48 E18G26 30.18S TC 19
TAYLORVILLE SUNNY 64 52 63 E13 30.17F TC 18
ILZ033-039-045-046-055>057-062-063-211700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 65 45 48 NE18G29 30.18F TC 18
DANVILLE* SUNNY 64 44 49 E15G24 30.21F TC 18
RANTOUL* MOSUNNY 65 43 45 E17G28 30.20F TC 18
MATTOON CLOUDY 60 47 61 E13 30.16S TC 16
PARIS* CLOUDY 60 46 61 E16 30.19R TC 15
ILZ079-100>102-211700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOSUNNY 64 54 68 NE9 30.17R TC 18
BELLEVILLE CLOUDY 64 57 77 NE8 30.14R TC 18
CAHOKIA* PTSUNNY 65 54 67 E5 30.15R TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 63 55 77 VRB6 30.12R TC 17
CAIRO* CLOUDY 67 62 84 E7 30.10S TC 19
EFFINGHAM* CLOUDY 60 53 76 NE9 30.17S TC 16
MARION CLOUDY 63 57 82 NE5 30.12R TC 17
MT. VERNON CLOUDY 61 55 81 NE8 30.14R TC 16
CENTRALIA* CLOUDY 62 55 75 CALM 30.14S TC 17
SALEM* CLOUDY 62 55 78 MISG 30.14S TC 17
METROPOLIS* CLOUDY 65 61 86 N5 30.10R TC 18
ILZ067-068-072-073-078-083-087-091-211700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 63 54 72 NE14 30.14S TC 17
FLORA* CLOUDY 63 54 72 NE12 30.14S TC 17
FAIRFIELD* CLOUDY 62 55 78 NE9 30.13R TC 17
HARRISBURG* CLOUDY 63 59 87 NE3 30.12R TC 17
ROBINSON* CLOUDY 63 52 67 E15 30.15S TC 17
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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