341
ASUS43 KLOT 211610
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 AM CDT TUE APR 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 71 49 45 W16G30 29.90F TC 22
STERLING* SUNNY 69 50 50 SW22 29.92F TC 21
SAVANNA* MOSUNNY 69 48 47 W10G17 29.90F TC 21
ILZ003-004-008-010-011-017-018-211700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 66 47 50 SW15G25 29.91F TC 19
FREEPORT* MOSUNNY 66 50 56 SW18G26 29.91F TC 19
ROCHELLE* SUNNY 67 46 46 SW20G26 29.92F TC 20
DE KALB* SUNNY 66 49 54 W22 29.93F TC 19
PERU* SUNNY 68 47 47 SW14G26 29.95S TC 20
ILZ005-006-012>014-019>023-211700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOSUNNY 67 45 45 SW17G30 29.92F TC 19
CHICAGO-MIDWAY PTSUNNY 68 47 46 SW17G30 29.94F TC 20
AURORA SUNNY 67 48 50 SW16G26 29.93F TC 19
JOLIET* SUNNY 70 47 44 SW14G20 29.96F TC 21
WAUKEGAN SUNNY 66 47 50 SW20G31 29.88F TC 19
DUPAGE AIRPORT SUNNY 67 49 52 SW17G29 29.93F TC 19
KANKAKEE* SUNNY 69 45 42 SW18G29 30.00F TC 21
WHEELING MOSUNNY 66 45 46 W17G26 29.93F TC 19
MORRIS* SUNNY 69 46 44 SW16G24 29.95F TC 21
ROMEOVILLE* SUNNY 68 46 45 SW16G31 29.96F TC 20
LANSING* MOSUNNY 68 45 44 SW18 29.97F TC 20
NORTHERLY ISL* N/A 66 42 41 SW15 N/A TC 19
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 44 1011.2 2/ 4
WAUKEGAN HARBOR 61 47 1013.3 2/ 4
HARRISON CRIB 64 240/ 17/ 19 N/A
NORTHERLY ISL 64 200/ 11/ 16 N/A
CALUMET HARBOR 64 200/ 14/ 19 1013.7
BURNS HARBOR 64 220/ 12/ 15 1015.2F
MICHIGAN CITY 65 210/ 15/ 17 1013.5F
ST. JOSEPH BUOY 53 200/ 10/ 12 1015.3F 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 69 49 48 SW21G29 29.99F TC 21
GALESBURG* SUNNY 67 55 64 SW17G25 29.97S TC 20
MACOMB* SUNNY 69 49 47 SW22 29.99S TC 21
JACKSONVILLE* MOSUNNY 70 44 38 SW21 30.02F TC 21
PITTSFIELD* MOSUNNY 70 48 45 SW16G29 30.04S TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-211700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC SUNNY 69 44 40 MISG 29.99S TC 21
BLOOMINGTON SUNNY 69 47 45 SW26 30.00F TC 21
DECATUR MOSUNNY 68 46 45 SW21G29 30.06F TC 20
PEORIA SUNNY 69 48 47 SW14G24 29.98S TC 21
LACON* SUNNY 69 45 43 SW13G23 29.96S TC 20
LINCOLN* SUNNY 71 48 44 SW12G21 30.02F TC 22
SPRINGFIELD MOSUNNY 70 44 39 SW16G28 30.03F TC 21
TAYLORVILLE MOSUNNY 70 45 40 SW21G29 30.07F TC 21
ILZ033-039-045-046-055>057-062-063-211700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 70 44 39 SW24G38 30.07S TC 21
DANVILLE* SUNNY 69 46 42 SW20G29 30.08S TC 21
RANTOUL* SUNNY 69 44 39 SW22G29 30.05F TC 21
MATTOON MOSUNNY 67 42 40 SW14G22 30.11F TC 19
PARIS* SUNNY 70 40 34 SW20G30 30.11F TC 21
ILZ079-100>102-211700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 70 45 40 SW13 30.10F TC 21
CAHOKIA* MOSUNNY 71 46 40 SW9 30.10F TC 22
SPARTA* SUNNY 70 43 38 SW12G20 30.15F TC 21
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 MOSUNNY 71 43 36 SW18G29 30.17F TC 22
CAIRO* SUNNY 72 48 43 SW12 30.23S TC 22
EFFINGHAM* MOSUNNY 69 44 40 SW13G22 30.14F TC 21
MARION MOSUNNY 72 45 37 MISG 30.18F TC 22
MT. VERNON SUNNY 71 46 40 SW17 30.16F TC 22
CENTRALIA* MOSUNNY 69 45 41 SW16 30.15F TC 21
SALEM* MOSUNNY 70 47 44 SW18 30.15S TC 21
METROPOLIS* SUNNY 72 47 41 MISG 30.23F TC 22
ILZ067-068-072-073-078-083-087-091-211700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 71 40 32 SW17G28 30.17S TC 22
FLORA* MOSUNNY 68 45 42 SW14 30.16S TC 20
FAIRFIELD* SUNNY 69 41 36 SW16G22 30.17S TC 21
HARRISBURG* MOSUNNY 71 47 42 SW13G18 30.20F TC 22
ROBINSON* SUNNY 70 43 37 SW15G21 30.15S TC 21
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