790
ASUS43 KLOT 212301
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 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.
ILZ001-002-007-009-015-016-024-220000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 69 45 41 E12 30.12F TC 21
STERLING* MOSUNNY 67 40 37 E21 30.17F TC 19
SAVANNA* PTSUNNY 63 42 46 NE15G21 30.18S TC 17
ILZ003-004-008-010-011-017-018-220000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 60 42 51 NE12G18 30.22F TC 16
FREEPORT* MOSUNNY 61 46 56 E12 30.22S TC 16
DE KALB* MOSUNNY 61 43 52 E16G23 30.21F TC 16
ILZ005-006-012>014-019>023-220000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 55 39 54 NE18G25 30.23S TC 13
CHICAGO-MIDWAY PTSUNNY 57 39 51 NE16 30.22S TC 14
AURORA PTSUNNY 61 44 53 NE16 30.20S TC 16
JOLIET* CLOUDY 63 45 52 NE10G18 30.19F TC 17
WAUKEGAN MOSUNNY 50 38 63 NE14G26 30.25F TC 10
DUPAGE AIRPORT MOSUNNY 58 43 57 E17G23 30.21F TC 14
KANKAKEE* CLOUDY 64 44 48 NE16G24 30.17S TC 18
WHEELING MOSUNNY 53 39 59 NE13G21 30.25S TC 12
MORRIS* MOSUNNY 64 43 45 E13G18 30.18S TC 18
ROMEOVILLE* MOSUNNY 63 46 55 NE18 30.20F TC 17
LANSING* MOSUNNY 56 40 56 NE14G21 30.21F TC 13
NORTHERLY ISL* N/A 51 41 68 N14 N/A TC 11
LMZ740>746-220000-
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 1024.9R 3/ 4
WAUKEGAN HARBOR 47 49 340/ 17/ 23 1023.1F 3/ 5
WILMETTE BUOY 48 60/ 21/ 29 1024.4F 4/ 5
CHICAGO BUOY 50 55 350/ 19/ 23 1022.3F 4/ 5
HARRISON CRIB 49 360/ 19/ 20 N/A
NORTHERLY ISL 52 350/ 13/ 16 N/A
CALUMET HARBOR 52 340/ 12/ 18 1023.5
BURNS HARBOR 51 30/ 9/ 10 1023.7S
MICHIGAN CITY 51 30/ 15/ 16 1022.5F
ST. JOSEPH BUOY 53 10/ 12/ 14 1023.5F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-220000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 70 45 40 E10 30.08F TC 21
GALESBURG* MOSUNNY 69 44 39 E9G20 30.13F TC 21
MACOMB* MOSUNNY 73 44 35 E17 30.13S TC 23
JACKSONVILLE* PTSUNNY 70 47 44 E17 30.09S TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-220000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 67 40 37 E16G22 30.14F TC 19
DECATUR CLOUDY 66 47 50 E15 30.11F TC 19
PEORIA CLOUDY 70 39 32 E12G21 30.11F TC 21
LACON* MOSUNNY 69 46 42 E8G17 30.12F TC 21
LINCOLN* CLOUDY 68 44 42 E13 30.12F TC 20
SPRINGFIELD MOSUNNY 67 46 47 E12 30.11S TC 19
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-220000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 66 46 48 NE14 30.12F TC 19
DANVILLE* CLOUDY 67 41 38 E13 30.14F TC 20
MATTOON CLOUDY 66 51 58 E12 30.10S TC 19
PARIS* CLOUDY 66 48 50 E13 30.12S TC 19
ILZ079-100>102-220000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 68 57 68 E9 30.08S TC 20
CAHOKIA* CLOUDY 67 58 72 E8 30.06F TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 66 60 81 NE9 30.04F TC 19
CAIRO* CLOUDY 68 63 84 NE9 30.02F TC 20
EFFINGHAM* CLOUDY 66 57 72 NE7 30.10F TC 19
MARION CLOUDY 66 61 82 NE12 30.05F TC 19
MT. VERNON CLOUDY 66 58 75 NE9 30.07F TC 19
CENTRALIA* CLOUDY 66 57 73 CALM 30.07F TC 19
SALEM* CLOUDY 66 57 73 MISG 30.08F TC 19
ILZ067-068-072-073-078-083-087-091-220000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 68 57 68 NE9 30.08F TC 20
FLORA* CLOUDY 66 57 72 NE9 30.08F TC 19
FAIRFIELD* CLOUDY 66 56 70 NE6 30.08S TC 19
HARRISBURG* CLOUDY 66 60 82 NE10 30.06F TC 19
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page