103
ASUS43 KLOT 172212
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT MON AUG 17 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.
ILZ001-002-007-009-015-016-024-172300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE SUNNY 81 62 52 NW8 30.03F HX 82 TC 27
STERLING* SUNNY 80 61 52 N6 30.04F HX 81 TC 27
SAVANNA* SUNNY 83 59 44 W7 30.03F HX 82 TC 28
ILZ003-004-008-010-011-017-018-172300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOSUNNY 79 58 48 VRB7 30.03F HX 80 TC 26
FREEPORT* MOSUNNY 80 61 51 W8 30.05F HX 81 TC 27
PERU* MOSUNNY 81 61 50 N6 30.04S HX 81 TC 27
ILZ005-006-012>014-019>023-172300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 78 61 55 N6 30.00F HX 80 TC 26
CHICAGO-MIDWAY PTSUNNY 77 61 57 NE7 30.01S TC 25
AURORA SUNNY 78 58 49 NW10 30.02S TC 26
JOLIET* SUNNY 82 59 45 NW6 30.01F HX 82 TC 28
WAUKEGAN MOSUNNY 75 63 66 SE6 30.01F TC 24
DUPAGE AIRPORT MOSUNNY 77 57 50 N10 30.01F TC 25
WHEELING PTSUNNY 77 63 61 E5 30.02F TC 25
LANSING* SUNNY 76 59 56 N7 30.02F TC 24
NORTHERLY ISL* N/A 75 62 64 NE5 N/A TC 24
LMZ740>746-172300-
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 73 75 130/ 8/ 10 1016.1 2/ 6
WAUKEGAN HARBOR 73 75 110/ 6/ 8 1017.0 1/ 4
WILMETTE BUOY 73 90/ 4/ 6 1019.9F 2/ 4
CHICAGO BUOY 73 74 1015.5 2/ 5
HARRISON CRIB 73 40/ 4/ 5 N/A
NORTHERLY ISL 75 30/ 6/ 9 N/A
CALUMET HARBOR 74 20/ 6/ 8 1016.8
MICHIGAN CITY 76 10/ 7/ 8 1014.9F
MICH CITY BUOY 72 74 360/ 8/ 12 N/A 2/ 5
ST. JOSEPH BUOY 72 75 350/ 10/ 12 1017.1F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-172300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 80 63 55 NW7 30.07S HX 81 TC 27
MACOMB* MOSUNNY 80 66 61 NW8 30.08S HX 82 TC 27
ILZ028>032-037-038-041>044-048-051>054-059>061-172300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOSUNNY 80 61 52 N12 30.05F HX 81 TC 27
DECATUR MOSUNNY 81 61 50 N12G18 30.04F HX 82 TC 27
PEORIA SUNNY 80 60 50 N8 30.04F HX 81 TC 27
LACON* SUNNY 79 59 49 NW6 30.03S HX 80 TC 26
LINCOLN* SUNNY 82 62 51 N5 30.04S HX 83 TC 28
SPRINGFIELD MOSUNNY 81 63 54 N7 30.04F HX 82 TC 27
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-172300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 78 65 63 MISG 30.03S HX 80 TC 26
RANTOUL* MOSUNNY 78 66 67 NW6 30.03S HX 80 TC 26
MATTOON MOSUNNY 80 64 58 NW14 30.02S HX 82 TC 27
ILZ079-100>102-172300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 82 64 54 N7 30.05S HX 84 TC 28
BELLEVILLE MOSUNNY 83 69 62 N5 30.03S HX 86 TC 28
CAHOKIA* PTSUNNY 82 66 58 N8 30.04S HX 84 TC 28
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-172300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 82 66 57 NW12 30.02F HX 85 TC 28
CAIRO* SUNNY 87 73 64 NW6 30.01F HX 94 TC 30
EFFINGHAM* PTSUNNY 79 64 61 NW10 30.05S HX 81 TC 26
MT. VERNON MOSUNNY 83 65 54 VRB5 30.04S HX 85 TC 28
CENTRALIA* MOSUNNY 82 66 58 NW9 30.05R HX 84 TC 28
SALEM* N/A 80 67 64 MISG 30.04S HX 82 TC 27
ILZ067-068-072-073-078-083-087-091-172300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 82 66 58 NW14 30.00S HX 84 TC 28
FAIRFIELD* MOSUNNY 82 65 57 NW5 30.02S HX 83 TC 28
HARRISBURG* MOSUNNY 83 68 60 NW13G21 30.02S HX 86 TC 29
ROBINSON* PTSUNNY 81 68 65 NW10 30.00S HX 83 TC 27
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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