792
ASUS43 KLOT 171001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM 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.
ILZ001-002-007-009-015-016-024-171100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 64 63 96 W5 30.04R TC 18
STERLING* CLEAR 64 62 93 NW5 30.04R TC 18
SAVANNA* CLEAR 60 59 96 CALM 30.03S TC 16
ILZ003-004-008-010-011-017-018-171100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 63 60 90 N5 30.03R TC 17
FREEPORT* CLEAR 62 60 95 NW5 30.04S TC 17
DE KALB* CLOUDY 63 63 98 NW5 30.03R TC 17
ILZ005-006-012>014-019>023-171100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 67 62 84 W5 29.97R TC 19
CHICAGO-MIDWAY PTCLDY 68 62 81 NW6 29.97S TC 20
AURORA PTCLDY 63 62 97 CALM 30.00R TC 17
JOLIET* PTCLDY 67 67 99 CALM 29.99S TC 19
WAUKEGAN MOCLDY 67 64 90 N6 29.98R TC 19
DUPAGE AIRPORT PTCLDY 65 63 93 W3 29.99R TC 18
KANKAKEE* MOCLDY 69 67 94 NW5 29.99S TC 20
WHEELING MOCLDY 67 63 87 N6 29.99R TC 19
ROMEOVILLE* CLEAR 66 66 100 NW7 30.00R TC 19
LANSING* MOCLDY 68 62 82 N5 29.98S TC 20
NORTHERLY ISL* N/A 70 62 76 W2 N/A TC 21
LMZ740>746-171100-
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 74 20/ 14/ 17 1014.8R 2/ 4
WAUKEGAN HARBOR 70 74 300/ 10/ 14 1015.5R 2/ 4
WILMETTE BUOY 71 360/ 10/ 16 1017.5R 2/ 5
CHICAGO BUOY 71 73 1013.9R 2/ 5
HARRISON CRIB 71 310/ 9/ 10 N/A
NORTHERLY ISL 70 300/ 5/ 9 N/A
CALUMET HARBOR 70 290/ 1/ 4 1015.0
MICHIGAN CITY 73 340/ 10/ 11 1012.8R
MICH CITY BUOY 73 74 330/ 10/ 14 N/A 3/ 5
ST. JOSEPH BUOY 73 74 360/ 8/ 10 1015.1R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-171100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 67 67 100 NW5 30.05R TC 19
GALESBURG* CLEAR 64 64 100 CALM 30.05S TC 18
JACKSONVILLE* CLEAR 68 68 100 NW3 30.03R TC 20
ILZ028>032-037-038-041>044-048-051>054-059>061-171100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 66 66 100 NW6 30.01R TC 19
BLOOMINGTON PTCLDY 68 68 100 N9 30.03R TC 20
DECATUR MOCLDY 72 69 90 N6 30.00R TC 22
PEORIA CLEAR 67 65 93 N3 30.02R TC 19
LACON* CLEAR 65 62 91 CALM 30.01F TC 18
LINCOLN* MOCLDY 70 70 100 CALM 30.02R TC 21
SPRINGFIELD PTCLDY 70 68 93 N5 30.02R TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-171100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 71 70 96 NW5 29.99S TC 22
MATTOON CLOUDY 75 74 96 W5 29.97F TC 24
PARIS* CLOUDY 74 73 98 W5 29.98S FOG TC 23
ILZ079-100>102-171100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY N/A N/A N/A CALM 30.01S
CAHOKIA* CLOUDY 75 73 93 N8 30.00S TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-171100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MT. VERNON CLOUDY 74 73 97 CALM 29.99F TC 23
CENTRALIA* CLOUDY 75 74 98 CALM 30.00S TC 24
METROPOLIS* MOCLDY 76 70 81 N6 29.99S TC 25
ILZ067-068-072-073-078-083-087-091-171100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 74 73 97 S3 29.96F TC 23
FLORA* MOCLDY 73 N/A N/A SW3 29.98F TC 23
FAIRFIELD* MOCLDY 72 72 99 CALM 29.98F TC 22
HARRISBURG* MOCLDY 73 73 100 N5 29.97F TC 23
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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