052
ASUS43 KLOT 190001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 PM CDT TUE AUG 18 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.
ILZ001-002-007-009-015-016-024-190100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 80 69 69 SW7 29.90S HX 83 TC 27
6HR MIN TEMP: 75; 6HR MAX TEMP: 81;
STERLING* CLOUDY 77 71 82 SW6 29.92S TC 25
SAVANNA* PTCLDY 78 70 75 SW3 29.90F HX 80 TC 26
ILZ003-004-008-010-011-017-018-190100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 76 70 82 S8 29.91F TC 24
6HR MIN TEMP: 75; 6HR MAX TEMP: 78; 6HR PCP: TRACE;
FREEPORT* CLOUDY 76 72 87 SW7 29.93S TC 25
ILZ005-006-012>014-019>023-190100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 76 65 68 SW8 29.91F TC 24
6HR MIN TEMP: 76; 6HR MAX TEMP: 79;
CHICAGO-MIDWAY MOCLDY 76 67 73 SW8G20 29.91F TC 24
6HR MIN TEMP: 76; 6HR MAX TEMP: 80;
AURORA PTCLDY 77 69 76 SW8 29.91F TC 25
6HR MIN TEMP: 74; 6HR MAX TEMP: 77; 6HR PCP: TRACE;
JOLIET* PTCLDY 78 69 74 SW7 29.92F TC 25
WAUKEGAN CLOUDY 73 70 90 SW8 29.89F TC 23
6HR MIN TEMP: 69; 6HR MAX TEMP: 80; 6HR PCP: 0.12;
DUPAGE AIRPORT PTCLDY 75 68 78 S7 29.91F TC 24
6HR MIN TEMP: 74; 6HR MAX TEMP: 79;
WHEELING MOCLDY 76 65 68 SW7 29.91F TC 24
6HR MIN TEMP: 76; 6HR MAX TEMP: 81;
ROMEOVILLE* PTCLDY 77 73 88 S9G16 29.92F TC 25
LANSING* PTCLDY 75 65 70 SW8 29.93F TC 24
NORTHERLY ISL* N/A 76 63 64 SW6 N/A TC 24
LMZ740>746-190100-
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 74 74 170/ 10/ 12 1010.9R 1
WAUKEGAN HARBOR 76 74 210/ 14/ 17 1013.0F 1
WILMETTE BUOY 76 220/ 12/ 17 1016.2F 1/ 2
CHICAGO BUOY 76 73 1012.1F 1/ 2
NORTHERLY ISL 77 230/ 11/ 13 N/A
CALUMET HARBOR 76 230/ 8/ 12 1013.6
MICH CITY BUOY 75 74 220/ 10/ 12 N/A 2/ 3
ST. JOSEPH BUOY 75 74 220/ 8/ 12 1014.2F 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-190100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 79 70 74 S6 29.95F HX 82 TC 26
MACOMB* CLEAR 78 73 85 SW7 29.96S HX 80 TC 26
ILZ028>032-037-038-041>044-048-051>054-059>061-190100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 78 68 71 SW10 29.96F HX 80 TC 26
DECATUR PTCLDY 80 67 64 SW8 29.96F HX 82 TC 27
PEORIA CLEAR 79 68 69 SW13 29.93F HX 81 TC 26
6HR MIN TEMP: 77; 6HR MAX TEMP: 81;
SPRINGFIELD PTCLDY 80 67 64 S8 29.94F HX 82 TC 27
6HR MIN TEMP: 80; 6HR MAX TEMP: 84;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-190100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 78 69 73 S5 29.96F HX 80 TC 26
MATTOON MOCLDY 78 68 71 SW3 29.97F HX 80 TC 26
ILZ079-100>102-190100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 79 72 78 VRB3 29.95F HX 82 TC 26
BELLEVILLE MOCLDY 82 74 74 S8 29.93F HX 88 TC 28
CAHOKIA* MOCLDY 83 70 64 S6 29.95F HX 87 TC 28
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 84 70 61 CALM 29.98F HX 88 TC 29
MT. VERNON MOCLDY 84 68 58 S6 29.99F HX 87 TC 29
SALEM* N/A 82 71 68 MISG 29.98F HX 86 TC 28
ILZ067-068-072-073-078-083-087-091-190100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 82 66 58 S5 29.98F HX 84 TC 28
FAIRFIELD* MOCLDY 81 68 63 S3 29.99F HX 84 TC 27
HARRISBURG* PTCLDY 84 67 57 W3 29.99F HX 87 TC 29
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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