627
ASUS43 KLOT 170910
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 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.
ILZ001-002-007-009-015-016-024-171000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 64 63 96 W3 30.02S TC 18
STERLING* CLEAR 64 64 100 NW3 30.02S TC 18
SAVANNA* N/A 62 61 96 CALM 30.03R FOG TC 17
ILZ003-004-008-010-011-017-018-171000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 64 61 90 N7 30.02S TC 18
FREEPORT* CLEAR 63 61 95 NW5 30.04S TC 17
ROCHELLE* MOCLDY 62 60 94 CALM 30.01S TC 17
DE KALB* PTCLDY 63 63 99 NW7 30.01S TC 17
PERU* CLEAR 66 64 94 NW3 30.01S TC 19
ILZ005-006-012>014-019>023-171000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 67 62 84 NW5 29.96S TC 19
CHICAGO-MIDWAY CLEAR 69 62 78 NW8 29.97R TC 21
AURORA MOCLDY 64 63 96 CALM 29.99R TC 18
JOLIET* PTCLDY 67 67 100 CALM 29.99R TC 20
WAUKEGAN CLEAR 66 63 90 NW8 29.96S TC 19
DUPAGE AIRPORT PTCLDY 66 62 87 NW5 29.98R TC 19
KANKAKEE* MOCLDY 70 69 95 W3 29.99R TC 21
WHEELING MOCLDY 67 62 84 N5 29.98S TC 19
ROMEOVILLE* PTCLDY 68 66 94 CALM 29.99R TC 20
LANSING* PTCLDY 69 63 81 CALM 29.97R TC 21
NORTHERLY ISL* N/A 70 61 73 W7 N/A TC 21
LMZ740>746-171000-
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 71 74 330/ 12/ 16 1014.4 2/ 4
WAUKEGAN HARBOR 69 74 300/ 10/ 12 1015.2 2/ 3
WILMETTE BUOY 71 10/ 14/ 17 1017.2F 2/ 5
CHICAGO BUOY 72 73 1013.8 2/ 5
HARRISON CRIB 71 320/ 9/ 11 N/A
NORTHERLY ISL 71 290/ 7/ 9 N/A
CALUMET HARBOR 71 310/ 3/ 5 1014.5F
MICHIGAN CITY 74 350/ 10/ 11 1012.5S
MICH CITY BUOY 74 74 340/ 10/ 12 N/A 3/ 5
ST. JOSEPH BUOY 73 74 350/ 8/ 12 1014.6F 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-171000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 68 67 96 NW6 30.04R TC 20
GALESBURG* CLEAR 65 65 100 N3 30.04S TC 19
MACOMB* CLEAR 66 66 100 NW5 30.06R TC 19
JACKSONVILLE* MOCLDY 70 70 100 NW3 30.02R TC 21
ILZ028>032-037-038-041>044-048-051>054-059>061-171000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 67 67 100 NW7 30.00R TC 20
BLOOMINGTON MOCLDY 69 69 100 N9 30.01R TC 21
DECATUR CLOUDY 74 72 93 N7 29.99R TC 23
PEORIA PTCLDY 68 66 93 NW5 30.01S TC 20
LACON* PTCLDY 66 63 89 CALM 30.00S TC 19
LINCOLN* MOCLDY 72 72 100 CALM 30.00R TC 22
SPRINGFIELD MOCLDY 72 70 93 NW6 30.00R TC 22
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-171000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 73 71 93 N9 29.99R TC 23
RANTOUL* CLOUDY 71 69 95 N6 29.99R TC 22
MATTOON CLOUDY 74 73 97 W3 29.98R TC 23
PARIS* CLOUDY 73 73 98 SW5 29.98R TC 23
ILZ079-100>102-171000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 73 72 97 CALM 30.01R TC 23
BELLEVILLE MOCLDY 75 74 97 W3 29.98R TC 24
CAHOKIA* CLOUDY 75 74 96 NW3 30.00R TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-171000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* MOCLDY 78 73 82 N7 29.98R HX 81 TC 26
EFFINGHAM* CLOUDY 73 73 100 CALM 30.01R TC 23
MARION CLOUDY 73 72 98 NE5 29.99F TC 23
MT. VERNON MOCLDY 74 73 97 CALM 30.01R TC 23
CENTRALIA* CLOUDY 75 74 97 CALM 30.00R TC 24
SALEM* N/A 75 75 100 MISG 30.00R TC 24
METROPOLIS* MOCLDY 78 71 78 N7 29.99R HX 80 TC 26
ILZ067-068-072-073-078-083-087-091-171000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE RAIN 74 73 97 SE5 29.98S TC 23
FLORA* MOCLDY 73 N/A N/A CALM 30.00R TC 23
FAIRFIELD* MOCLDY 73 72 98 CALM 29.98F TC 23
HARRISBURG* CLOUDY 73 73 100 NW5 30.02R TC 23
ROBINSON* DRIZZLE 73 73 100 SW1 29.98R FOG TC 23
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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