219
ASUS43 KLOT 201112
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CDT THU AUG 20 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.
ILZ001-002-007-009-015-016-024-201200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 66 63 90 NE6 30.00R TC 19
STERLING* PTCLDY 62 62 100 CALM 30.02R TC 17
SAVANNA* PTCLDY 61 59 92 CALM 30.02S TC 16
ILZ003-004-008-010-011-017-018-201200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 55 54 96 CALM 30.04R TC 13
FREEPORT* CLEAR 56 55 95 CALM 30.04S TC 14
ROCHELLE* CLEAR 59 56 90 NE5 30.02R TC 15
PERU* CLEAR 63 61 94 N5 30.01R TC 17
ILZ005-006-012>014-019>023-201200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 62 56 80 N7 29.99R TC 17
CHICAGO-MIDWAY PTCLDY 66 57 72 N7 29.98R TC 19
AURORA CLEAR 59 58 96 CALM 30.00R TC 15
JOLIET* PTCLDY 65 59 81 N5 29.99R TC 19
WAUKEGAN CLEAR 59 56 89 N5 30.00R TC 15
DUPAGE AIRPORT CLEAR 60 57 89 N6 30.00R TC 16
WHEELING PTCLDY 61 57 87 N5 30.01R TC 16
LANSING* MOCLDY 68 54 61 CALM 29.98S TC 20
NORTHERLY ISL* N/A 70 52 52 MISG N/A TC 21
LMZ740>746-201200-
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 66 74 300/ 6/ 8 1015.4 2/ 4
WAUKEGAN HARBOR 66 74 300/ 8/ 12 1016.2 2/ 4
WILMETTE BUOY 72 70/ 12/ 17 1018.3R 2/ 4
CHICAGO BUOY 73 73 1014.3 2/ 4
NORTHERLY ISL 69 360/ 7/ 11 N/A
CALUMET HARBOR 72 350/ 7/ 10 1015.1
MICH CITY BUOY 72 74 10/ 12/ 14 N/A 2/ 4
ST. JOSEPH BUOY 70 74 30/ 8/ 10 1015.7R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-201200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 63 63 100 NE5 29.98R TC 17
MACOMB* CLOUDY 66 66 100 NE3 30.02R FOG TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-201200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 65 65 100 NE5 29.99S TC 18
DECATUR PTCLDY 66 66 100 NE5 29.98R FOG TC 19
PEORIA CLEAR 66 64 93 CALM 29.99R TC 19
LACON* CLEAR 63 61 93 CALM 29.99R TC 17
LINCOLN* MOCLDY 68 68 100 N3 29.98R TC 20
SPRINGFIELD LGT RAIN 67 66 97 N6 29.97R FOG TC 19
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-201200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 69 69 100 N5 29.97R FOG TC 21
MATTOON MOCLDY 67 66 97 N7 29.96R TC 19
ILZ079-100>102-201200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 70 69 95 CALM 29.96R TC 21
BELLEVILLE PTCLDY 74 73 97 NE5 29.92R TC 24
CAHOKIA* CLOUDY 74 73 97 N6 29.94R TC 23
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-201200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 71 71 99 CALM 29.94R TC 22
EFFINGHAM* CLOUDY 67 67 100 CALM 29.96R TC 20
MARION MOCLDY 69 68 98 CALM 29.94R TC 20
MT. VERNON CLOUDY 72 71 97 CALM 29.95R TC 22
CENTRALIA* CLOUDY 73 72 98 CALM 29.95R TC 23
SALEM* CLOUDY 73 73 100 MISG 29.95R TC 23
METROPOLIS* MOCLDY 70 69 98 CALM 29.94R TC 21
ILZ067-068-072-073-078-083-087-091-201200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE TSTM 68 68 100 VRB6 29.96R FOG TC 20
FAIRFIELD* CLOUDY 71 69 95 CALM 29.94R TC 22
HARRISBURG* CLOUDY 70 70 100 CALM 29.94R TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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