Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 241001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT MON AUG 24 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-241100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 54 53 97 CALM 30.06R TC 12
STERLING* CLEAR 53 53 100 E3 30.07R FOG TC 12
SAVANNA* FOG 53 52 96 CALM 30.06S VSB 1/2 TC 12
$$
ILZ003-004-008-010-011-017-018-241100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 52 52 100 CALM 30.08R TC 11
FREEPORT* CLEAR 51 49 95 CALM 30.08S TC 10
$$
ILZ005-006-012>014-019>023-241100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 59 53 80 W5 30.03R TC 15
CHICAGO-MIDWAY CLEAR 60 54 80 CALM 30.03S TC 16
AURORA CLEAR 52 51 97 W5 30.05R TC 11
JOLIET* CLEAR 54 54 100 CALM 30.05S TC 12
WAUKEGAN NOT AVBL
DUPAGE AIRPORT CLEAR 54 52 94 CALM 30.05S TC 12
WHEELING CLEAR 58 54 86 W5 30.05R TC 14
LANSING* CLEAR 55 53 93 W3 30.04S TC 13
NORTHERLY ISL* N/A 64 54 69 W8 N/A TC 18
$$
LMZ740>746-241100-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 62 73 280/ 6/ 8 1016.2R 2/ 6
WAUKEGAN HARBOR 62 73 260/ 8/ 10 1017.0R 1/ 5
WILMETTE BUOY 69 90/ 6/ 10 1019.2R 2/ 6
CHICAGO BUOY 67 73 1015.8R 2/ 5
NORTHERLY ISL 65 280/ 7/ 8 N/A
CALUMET HARBOR 62 240/ 3/ 5 1017.0R
MICH CITY BUOY 67 74 120/ 4/ 6 N/A 2/ 5
ST. JOSEPH BUOY 64 74 90/ 8/ 10 1017.3F 2/ 4
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-241100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 57 54 89 CALM 30.06S TC 14
MACOMB* CLEAR 53 53 100 CALM 30.09S TC 12
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-241100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 59 55 87 W3 30.07F TC 15
DECATUR CLEAR 57 55 93 CALM 30.07S TC 14
PEORIA CLEAR 55 55 100 CALM 30.06S TC 13
LINCOLN* FOG 54 54 100 CALM 30.07S VSB 3/4 TC 12
SPRINGFIELD CLEAR 55 54 96 CALM 30.06F TC 13
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-241100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 55 55 100 W5 30.07S FOG TC 13
MATTOON CLEAR 57 57 100 CALM 30.06S TC 14
$$
ILZ079-100>102-241100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* PTCLDY 57 56 96 CALM 30.06S TC 14
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-241100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MARION N/A 58 57 97 CALM 30.07S FOG TC 14
MT. VERNON CLEAR 53 53 100 CALM 30.08 FOG TC 12
CENTRALIA* N/A 55 55 98 CALM 30.07S FOG TC 13
SALEM* N/A 58 57 98 MISG N/A TC 14
$$
ILZ067-068-072-073-078-083-087-091-241100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 60 58 92 CALM 30.06R TC 16
FAIRFIELD* CLEAR 58 57 96 CALM 30.07R TC 15
HARRISBURG* CLEAR 56 56 100 CALM 30.07S TC 13
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$