Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 121202
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 AM CDT SAT SEP 12 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-121300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 64 63 96 N3 29.84R TC 18
6HR MIN TEMP: 62; 6HR MAX TEMP: 67;
STERLING* CLEAR 60 60 100 CALM 29.88R FOG TC 16
SAVANNA* PTCLDY 62 60 94 CALM 29.86R TC 17
$$
ILZ003-004-008-010-011-017-018-121300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 59 59 100 CALM 29.90R TC 15
6HR MIN TEMP: 58; 6HR MAX TEMP: 63;
FREEPORT* MOCLDY 64 62 94 S5 29.89R TC 18
$$
ILZ005-006-012>014-019>023-121300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 66 63 90 S5 29.87R TC 19
6HR MIN TEMP: 66; 6HR MAX TEMP: 70;
CHICAGO-MIDWAY MOCLDY 69 64 84 S5 29.87R TC 21
6HR MIN TEMP: 68; 6HR MAX TEMP: 71;
AURORA CLEAR 60 59 96 CALM 29.88R FOG TC 16
6HR MIN TEMP: 59; 6HR MAX TEMP: 63;
JOLIET* CLEAR 63 63 100 CALM 29.88R FOG TC 17
WAUKEGAN PTCLDY 64 61 90 SW6 29.86R TC 18
6HR MIN TEMP: 61; 6HR MAX TEMP: 68;
DUPAGE AIRPORT CLEAR 62 60 93 CALM 29.89R TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 65;
WHEELING CLEAR 63 61 93 CALM 29.89R TC 17
6HR MIN TEMP: 61; 6HR MAX TEMP: 66;
LANSING* MOCLDY 64 63 96 CALM 29.88S TC 18
NORTHERLY ISL* N/A 69 63 81 SW5 N/A TC 21
$$
LMZ740>746-121300-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 66 66 170/ 6/ 8 1011.4R 1/ 4
WAUKEGAN HARBOR 69 67 220/ 8/ 12 1012.2R 1/ 4
WILMETTE BUOY 70 190/ 8/ 10 1013.7R 1/ 3
CHICAGO BUOY 70 70 1010.5R 1
HARRISON CRIB 70 180/ 8/ 8 N/A
NORTHERLY ISL 69 230/ 3/ 7 N/A
CALUMET HARBOR 68 180/ 6/ 8 1011.5S
MICHIGAN CITY 67 150/ 7/ 8 1010.7R
MICH CITY BUOY 67 69 160/ 6/ 8 N/A 1
ST. JOSEPH BUOY 67 67 150/ 8/ 10 1012.7S 1/ 2
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-121300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 65 65 100 S6 29.86S FOG TC 18
MACOMB* MOCLDY 58 58 100 CALM 29.88S FOG TC 15
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-121300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 67 67 100 SW5 29.90R TC 19
DECATUR PTCLDY 69 68 96 S3 29.90R TC 21
PEORIA CLEAR 65 65 100 CALM 29.88R TC 18
6HR MIN TEMP: 64; 6HR MAX TEMP: 70;
SPRINGFIELD CLEAR 65 65 100 CALM 29.89R FOG TC 18
6HR MIN TEMP: 65; 6HR MAX TEMP: 71;
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-121300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 67 67 100 S3 29.90R FOG TC 19
MATTOON CLOUDY 70 68 93 S6 29.89R TC 21
$$
ILZ079-100>102-121300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON FOG 66 66 100 SE3 29.90R VSB 1/4 TC 19
CAHOKIA* PTCLDY 66 66 100 CALM 29.88R FOG TC 19
SPARTA* CLEAR 68 68 100 CALM 29.91R TC 20
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-121300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* MOCLDY 69 67 94 SE3 29.92R FOG TC 21
MT. VERNON PTCLDY 70 70 100 CALM 29.91R FOG TC 21
CENTRALIA* CLOUDY 71 71 98 CALM 29.91R TC 22
SALEM* PTCLDY 70 70 100 MISG 29.90R FOG TC 21
$$
ILZ067-068-072-073-078-083-087-091-121300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 72 70 93 S7 29.90R TC 22
FAIRFIELD* MOCLDY 69 68 98 CALM 29.90S TC 20
HARRISBURG* FOG 68 68 100 CALM 29.92R VSB 1/4 TC 20
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$