Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 211401
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 AM CDT FRI AUG 21 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.
ILZ001-002-007-009-015-016-024-211500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 70 61 73 SW6 30.05R TC 21
STERLING* PTSUNNY 65 62 90 CALM 30.06F TC 18
SAVANNA* PTSUNNY 66 58 75 S8 30.05S TC 19
$$
ILZ003-004-008-010-011-017-018-211500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 69 62 78 S8 30.05F TC 21
FREEPORT* MOSUNNY 69 60 73 SW8 30.07S TC 20
$$
ILZ005-006-012>014-019>023-211500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOSUNNY 70 61 73 SW9 30.05S TC 21
CHICAGO-MIDWAY MOSUNNY 71 61 70 SW9 30.06S TC 22
AURORA LGT RAIN 66 63 90 S5 30.06F FOG TC 19
JOLIET* MOSUNNY 68 67 96 SW3 30.08S FOG TC 20
WAUKEGAN MOSUNNY 70 62 76 SW7 30.04S TC 21
DUPAGE AIRPORT LGT RAIN 72 63 73 S8 30.06F TC 22
WHEELING MOSUNNY 71 62 73 SW6 30.07S TC 22
LANSING* MOSUNNY 69 62 80 S3 30.06F TC 21
NORTHERLY ISL* N/A 72 59 63 W9 N/A TC 22
$$
LMZ740>746-211500-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 70 74 230/ 10/ 12 1016.8R 1
WAUKEGAN HARBOR 71 74 260/ 10/ 12 1017.8R 1
WILMETTE BUOY 71 240/ 10/ 12 1020.3F 1
CHICAGO BUOY 72 73 1016.4F 1
NORTHERLY ISL 71 230/ 7/ 8 N/A
CALUMET HARBOR 70 210/ 4/ 6 1018.0
MICH CITY BUOY 69 74 220/ 6/ 8 N/A 1/ 4
ST. JOSEPH BUOY 70 74 160/ 8/ 10 1018.4F 1/ 2
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-211500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 72 67 84 SW6 30.08R TC 22
MACOMB* MOSUNNY 67 65 94 S3 30.10S TC 20
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-211500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON SUNNY 70 62 76 S3 30.09S TC 21
DECATUR SUNNY 71 63 75 S3 30.07F TC 22
PEORIA SUNNY 69 61 75 S5 30.07F TC 21
SPRINGFIELD SUNNY 72 61 68 S3 30.08S TC 22
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-211500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN SUNNY 69 63 81 CALM 30.08S TC 21
MATTOON SUNNY 72 64 76 SE3 30.07F TC 22
$$
ILZ079-100>102-211500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 70 64 83 SE6 30.08F TC 21
CAHOKIA* N/A 74 67 78 SE5 30.07F TC 23
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 73 68 83 CALM 30.06S TC 23
MARION SUNNY 73 70 88 CALM 30.07R TC 23
MT. VERNON SUNNY 75 67 76 NE3 30.07S TC 24
CENTRALIA* SUNNY 74 67 76 CALM 30.07F TC 24
SALEM* SUNNY 75 67 76 MISG 30.07F TC 24
$$
ILZ067-068-072-073-078-083-087-091-211500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 74 68 81 CALM 30.06F TC 23
FAIRFIELD* SUNNY 73 66 79 CALM 30.07R TC 23
HARRISBURG* SUNNY 74 71 87 CALM 30.07R TC 24
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$