558
ASUS43 KLOT 211512
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 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.
ILZ001-002-007-009-015-016-024-211600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 57 40 52 E9 30.25R TC 14
STERLING* MOSUNNY 60 40 47 E20G28 30.25F TC 16
SAVANNA* PTSUNNY 54 34 47 E15G21 30.27F TC 12
ILZ003-004-008-010-011-017-018-211600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 55 36 48 NE9G20 30.30F TC 13
FREEPORT* PTSUNNY 53 35 50 E16 30.31F TC 12
ROCHELLE* PTSUNNY 58 40 50 E13G22 30.28F TC 14
DE KALB* PTSUNNY 57 44 62 E13G20 30.29F TC 14
PERU* PTSUNNY 61 43 51 E13G18 30.25S TC 16
ILZ005-006-012>014-019>023-211600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 49 39 68 NE12 30.30F TC 9
CHICAGO-MIDWAY CLOUDY 52 43 71 N12 30.30F TC 11
AURORA MOSUNNY 57 43 59 E16 30.29F TC 14
JOLIET* MOSUNNY 60 48 64 E9 30.28F TC 16
WAUKEGAN MOSUNNY 48 37 65 NE10 30.33S TC 9
DUPAGE AIRPORT PTSUNNY 53 42 66 E12 30.30S TC 12
KANKAKEE* SUNNY 62 45 53 E17 30.26F TC 17
WHEELING CLOUDY 50 39 66 E12 30.32F TC 10
MORRIS* MOSUNNY 61 46 59 E13G20 30.25F TC 16
ROMEOVILLE* PTSUNNY 57 46 67 NE12G20 30.29S TC 14
LANSING* MOSUNNY 58 47 65 N8 30.28F TC 15
NORTHERLY ISL* N/A 50 43 77 N10 N/A TC 10
LMZ740>746-211600-
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 1024.5 3/ 5
WAUKEGAN HARBOR 46 48 350/ 14/ 19 1025.4 3/ 4
WILMETTE BUOY 47 50/ 14/ 19 1027.4R 3/ 5
CHICAGO BUOY 50 54 40/ 10/ 14 1024.9 3/ 5
HARRISON CRIB 49 20/ 9/ 11 N/A
NORTHERLY ISL 49 20/ 7/ 10 N/A
CALUMET HARBOR 51 360/ 10/ 12 1026.0
BURNS HARBOR 58 80/ 5/ 7 1026.1F
MICHIGAN CITY 57 60/ 7/ 8 1024.8F
ST. JOSEPH BUOY 56 100/ 6/ 10 1026.3F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-211600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY SUNNY 57 46 66 VRB5 30.19S TC 14
GALESBURG* PTSUNNY 59 45 60 E10 30.23S TC 15
MACOMB* MOSUNNY 59 47 64 E10 30.24R TC 15
JACKSONVILLE* SUNNY 60 47 63 NE13G18 30.19S TC 15
PITTSFIELD* SUNNY 60 47 63 E7 30.20S TC 15
ILZ028>032-037-038-041>044-048-051>054-059>061-211600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC SUNNY 64 46 52 MISG 30.24F TC 18
BLOOMINGTON SUNNY 63 45 51 E20G26 30.22F TC 17
DECATUR SUNNY 62 48 60 NE16 30.18F TC 17
PEORIA SUNNY 60 47 61 E10 30.22F TC 16
LACON* MOSUNNY 61 43 52 E10G18 30.24R TC 16
LINCOLN* SUNNY 64 47 52 E17G23 30.20F TC 18
SPRINGFIELD SUNNY 64 48 56 NE15G23 30.18F TC 18
TAYLORVILLE SUNNY 63 52 67 NE10 30.18F TC 17
ILZ033-039-045-046-055>057-062-063-211600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 63 45 51 E21G30 30.19F TC 17
DANVILLE* SUNNY 62 44 52 E13G20 30.22S TC 16
RANTOUL* SUNNY 63 42 47 E16G22 30.21S TC 17
MATTOON MOSUNNY 61 50 67 E14G23 30.15F TC 16
PARIS* MOSUNNY 60 46 59 E16G25 30.18F TC 16
ILZ079-100>102-211600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 63 52 67 NE8 30.16F TC 17
BELLEVILLE CLOUDY 64 56 76 NE6 30.12F TC 18
CAHOKIA* SUNNY 63 51 65 NE8 30.14F TC 17
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 63 55 77 NE5 30.11S TC 17
CAIRO* CLOUDY 65 61 86 E8 30.09S TC 19
EFFINGHAM* CLOUDY 60 53 77 NE9 30.17S TC 16
MARION CLOUDY 63 55 77 NE7 30.11S TC 17
MT. VERNON CLOUDY 61 54 77 NE10 30.13S TC 16
CENTRALIA* CLOUDY 61 53 74 CALM 30.14S TC 16
SALEM* CLOUDY 61 54 78 MISG 30.14S TC 16
METROPOLIS* CLOUDY 64 63 96 NE7 30.09F TC 18
ILZ067-068-072-073-078-083-087-091-211600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 61 53 75 E20G28 30.14F TC 16
FLORA* CLOUDY 61 54 77 NE13 30.14S TC 16
FAIRFIELD* CLOUDY 61 54 77 NE10 30.12F TC 16
HARRISBURG* CLOUDY 62 58 86 NE6 30.11F TC 17
ROBINSON* CLOUDY 61 54 77 E15 30.15R TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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