307
ASUS43 KLOT 292201
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT TUE SEP 29 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.
ILZ001-002-007-009-015-016-024-292300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 79 54 41 S7 29.87F TC 26
STERLING* PTSUNNY 78 48 34 VRB6 29.91F TC 26
SAVANNA* CLOUDY 79 53 40 S9 29.88F TC 26
ILZ003-004-008-010-011-017-018-292300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 77 47 34 S10 29.91F TC 25
FREEPORT* PTSUNNY 77 48 35 S7 29.92F TC 25
DE KALB* PTSUNNY 77 50 38 S10 29.93F TC 25
ILZ005-006-012>014-019>023-292300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 75 49 39 S9 29.92F TC 24
CHICAGO-MIDWAY PTSUNNY 79 46 31 S8 29.93F TC 26
AURORA PTSUNNY 79 47 32 SW8 29.93F TC 26
JOLIET* MOSUNNY 81 49 32 SE3 29.94S HX 80 TC 27
WAUKEGAN SUNNY 69 59 70 SE12 29.93F TC 21
DUPAGE AIRPORT MOSUNNY 76 53 44 S6 29.93F TC 24
WHEELING MOSUNNY 76 50 40 SW10 29.94F TC 24
ROMEOVILLE* SUNNY 81 50 34 S5 29.94F HX 80 TC 27
LANSING* SUNNY 76 48 37 S5 29.94F TC 25
NORTHERLY ISL* N/A 68 59 73 S1 N/A TC 20
LMZ740>746-292300-
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 66 65 110/ 6/ 10 1013.9F 1/ 2
WAUKEGAN HARBOR 67 66 150/ 4/ 8 1014.3F 1/ 3
WILMETTE BUOY 67 90/ 10/ 14 1016.0F 1/ 2
CHICAGO BUOY 67 65 100/ 8/ 10 1012.9F 1
HARRISON CRIB 69 110/ 16/ 16 N/A
NORTHERLY ISL 70 120/ 2/ 7 N/A
CALUMET HARBOR 69 50/ 4/ 6 1014.3
MICHIGAN CITY 68 50/ 9/ 9 1013.4F
MICH CITY BUOY 65 65 70/ 6/ 8 N/A 0
ST. JOSEPH BUOY 65 64 50/ 4/ 4 1015.5F 0
ILZ025>027-034>036-040-047-049-050-058-095>099-292300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 82 52 35 S9 29.89F HX 81 TC 28
MACOMB* MOSUNNY 81 54 38 S7 29.93S HX 80 TC 27
ILZ028>032-037-038-041>044-048-051>054-059>061-292300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 77 50 38 SE8 29.95F TC 25
DECATUR MOSUNNY 82 45 27 S9 29.95F HX 80 TC 28
PEORIA PTSUNNY 80 47 31 S9 29.91F TC 27
LACON* PTSUNNY 77 52 41 CALM 29.91F TC 25
SPRINGFIELD SUNNY 81 44 27 S8 29.93S HX 80 TC 27
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-292300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 82 43 25 S8 29.96S HX 80 TC 28
MATTOON SUNNY 81 47 30 VRB5 29.96S HX 80 TC 27
ILZ079-100>102-292300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 81 48 32 S8 29.95 HX 80 TC 27
CAHOKIA* MOSUNNY 83 48 29 VRB3 29.92F HX 81 TC 28
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-292300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 82 46 28 CALM 29.94F HX 81 TC 28
CAIRO* SUNNY 86 50 28 SE7 29.95S HX 84 TC 30
EFFINGHAM* SUNNY 81 42 25 CALM 29.98S HX 80 TC 27
MT. VERNON SUNNY 84 47 27 W3 29.96S HX 82 TC 29
CENTRALIA* SUNNY 83 43 24 SE8 29.95F HX 81 TC 28
SALEM* SUNNY 83 44 25 MISG 29.96S HX 81 TC 28
ILZ067-068-072-073-078-083-087-091-292300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 80 52 37 SE6 29.96F HX 80 TC 27
FAIRFIELD* SUNNY 83 43 23 S3 29.96S HX 81 TC 29
HARRISBURG* SUNNY 83 51 32 CALM 29.96S HX 82 TC 29
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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