251
ASUS43 KLOT 170401
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 PM CDT SUN AUG 16 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.
ILZ001-002-007-009-015-016-024-170500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 71 66 84 NW5 30.00S TC 22
STERLING* CLEAR 70 66 87 N5 30.01R TC 21
SAVANNA* CLEAR 68 64 85 N6 30.01S TC 20
ILZ003-004-008-010-011-017-018-170500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 70 63 78 NW8 30.00S TC 21
FREEPORT* CLEAR 66 64 96 N6 30.03S TC 19
ILZ005-006-012>014-019>023-170500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 74 64 71 N14 29.95S TC 23
CHICAGO-MIDWAY CLOUDY 77 67 71 N10 29.94S TC 25
AURORA CLEAR 69 67 93 NW5 29.97R TC 21
JOLIET* PTCLDY 74 73 96 NW3 29.96R TC 23
WAUKEGAN PTCLDY 70 62 76 NW6 29.96F TC 21
DUPAGE AIRPORT PTCLDY 72 65 78 N10 29.97R TC 22
WHEELING MOCLDY 74 62 66 N14G21 29.97S TC 23
LANSING* CLOUDY 75 73 92 NW8 29.95S TC 24
NORTHERLY ISL* N/A 74 68 81 N10 N/A TC 23
LMZ740>746-170500-
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 74 320/ 10/ 14 1014.4F 1/ 2
WAUKEGAN HARBOR 74 74 310/ 12/ 16 1015.2F 1/ 3
WILMETTE BUOY 75 20/ 14/ 19 1017.7F 2/ 3
CHICAGO BUOY 76 73 1013.3R 1/ 3
HARRISON CRIB 76 20/ 15/ 17 N/A
NORTHERLY ISL 75 40/ 8/ 15 N/A
CALUMET HARBOR 76 350/ 7/ 11 1014.6R
MICHIGAN CITY 75 10/ 12/ 14 1012.2S
MICH CITY BUOY 75 74 360/ 16/ 19 N/A 1/ 2
ST. JOSEPH BUOY 75 74 350/ 12/ 16 1014.8S 1
ILZ025>027-034>036-040-047-049-050-058-095>099-170500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 72 71 97 NW6 30.03R TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-170500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOCLDY 76 76 100 NW8 30.00S TC 24
DECATUR CLOUDY 76 74 93 W7 30.00R TC 24
PEORIA CLOUDY 75 74 96 NW3 29.99R TC 24
LINCOLN* CLOUDY 76 76 100 CALM 29.99S TC 25
SPRINGFIELD PTCLDY 74 74 100 W3 30.00R TC 23
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-170500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 73 73 100 W5 29.99S TC 23
MATTOON PTCLDY 75 72 90 NW5 29.97F TC 24
ILZ079-100>102-170500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* TSTM 75 72 90 N14 30.01R TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-170500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MT. VERNON CLOUDY 81 75 82 N3 29.97F HX 87 TC 27
CENTRALIA* TSTM 80 70 73 N12G18 29.99R HX 82 TC 26
ILZ067-068-072-073-078-083-087-091-170500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 79 76 90 NE7 29.97F HX 83 TC 26
FAIRFIELD* PTCLDY 79 74 84 CALM 29.96F HX 82 TC 26
HARRISBURG* CLEAR 80 77 90 CALM 29.95F HX 87 TC 27
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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