162
ASUS43 KLOT 300610
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 AM CDT WED SEP 30 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.
ILZ001-002-007-009-015-016-024-300700-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 69 55 60 S5 29.87S TC 21
6HR MIN TEMP: 69; 6HR MAX TEMP: 74; 6HR PCP: TRACE;
STERLING* CLOUDY 69 52 54 VRB3 29.91R TC 21
SAVANNA* DRIZZLE 67 58 72 CALM 29.89R TC 19
ILZ003-004-008-010-011-017-018-300700-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 69 49 48 S7 29.90F TC 21
6HR MIN TEMP: 68; 6HR MAX TEMP: 72;
FREEPORT* CLOUDY 69 54 57 SW8 29.91S TC 21
ROCHELLE* CLOUDY 68 50 51 S8 29.91S TC 20
DE KALB* CLOUDY 64 51 61 S8 29.92S TC 18
PERU* MOCLDY 68 50 52 S7 29.90F TC 20
ILZ005-006-012>014-019>023-300700-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 70 50 49 S10 29.91S TC 21
6HR MIN TEMP: 68; 6HR MAX TEMP: 74;
CHICAGO-MIDWAY CLOUDY 70 50 49 S9 29.92F TC 21
6HR MIN TEMP: 69; 6HR MAX TEMP: 73;
AURORA MOCLDY 64 50 60 S3 29.91F TC 18
6HR MIN TEMP: 64; 6HR MAX TEMP: 71;
JOLIET* MOCLDY 67 53 60 S3 29.92F TC 20
WAUKEGAN CLOUDY 68 51 54 S12 29.90S TC 20
6HR MIN TEMP: 65; 6HR MAX TEMP: 68;
DUPAGE AIRPORT CLOUDY 67 51 56 S9 29.92F TC 19
6HR MIN TEMP: 64; 6HR MAX TEMP: 69;
KANKAKEE* MOCLDY 64 52 65 S3 29.95F TC 18
WHEELING CLOUDY 69 50 50 S9 29.92F TC 21
6HR MIN TEMP: 64; 6HR MAX TEMP: 70;
ROMEOVILLE* CLOUDY 66 54 63 S9 29.93F TC 19
LANSING* MOCLDY 61 51 69 S6 29.94F TC 16
NORTHERLY ISL* N/A 70 49 47 S10 N/A TC 21
LMZ740>746-300700-
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 68 65 160/ 10/ 12 1012.7 1/ 3
WAUKEGAN HARBOR 69 65 190/ 8/ 12 1013.3 1/ 3
WILMETTE BUOY 69 160/ 12/ 16 1015.3F 1/ 3
CHICAGO BUOY 69 64 210/ 12/ 16 1012.2 1/ 3
HARRISON CRIB 71 200/ 16/ 17 N/A
NORTHERLY ISL 70 190/ 11/ 11 N/A
CALUMET HARBOR 69 180/ 5/ 10 1013.8
MICHIGAN CITY 67 170/ 11/ 14 1012.8F
MICH CITY BUOY 65 63 180/ 10/ 16 N/A 1
ST. JOSEPH BUOY 65 62 180/ 10/ 14 1014.9F 1/ 2
ILZ025>027-034>036-040-047-049-050-058-095>099-300700-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 65 60 84 CALM 29.90F TC 18
GALESBURG* RAIN 66 57 73 S3 29.92R TC 19
MACOMB* LGT RAIN 66 57 72 SW5 29.93S TC 19
JACKSONVILLE* CLOUDY 71 50 47 S8 29.91S TC 22
PITTSFIELD* CLOUDY 72 51 48 S5 29.91F TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-300700-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC MOCLDY 64 52 65 CALM 29.93F TC 18
BLOOMINGTON MOCLDY 67 50 54 S13 29.94F TC 19
DECATUR CLOUDY 67 51 56 S8 29.95F TC 19
PEORIA MOCLDY 70 49 47 S8 29.91F TC 21
6HR MIN TEMP: 69; 6HR MAX TEMP: 73;
LACON* MOCLDY 67 49 54 CALM 29.90F TC 19
SPRINGFIELD CLOUDY 70 49 47 S8 29.92F TC 21
6HR MIN TEMP: 66; 6HR MAX TEMP: 71;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-300700-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 65 51 60 S7 29.96F TC 18
RANTOUL* MOCLDY 60 53 77 S5 29.97F TC 16
MATTOON MOCLDY 65 51 60 SE9 29.96F TC 18
PARIS* MOCLDY 59 53 80 CALM 29.99S TC 15
ILZ079-100>102-300700-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON MOCLDY 68 53 58 SE3 29.94S TC 20
BELLEVILLE CLEAR 64 59 83 CALM 29.93S TC 18
CAHOKIA* MOCLDY 68 54 60 SE5 29.93S TC 20
SPARTA* MOCLDY 66 51 56 S5 29.96S TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-300700-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* MOCLDY 62 58 87 CALM 29.97S TC 16
EFFINGHAM* MOCLDY 63 51 63 SE3 29.99S TC 17
MARION MOCLDY 66 52 59 S2 29.97S TC 19
MT. VERNON MOCLDY 58 55 90 CALM 29.97F TC 14
CENTRALIA* MOCLDY 67 52 59 S5 29.96F TC 20
SALEM* MOCLDY 69 53 55 MISG 29.96F TC 21
METROPOLIS* MOCLDY 58 57 97 CALM 29.98F TC 14
ILZ067-068-072-073-078-083-087-091-300700-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 60 56 86 CALM 29.98F TC 16
FLORA* CLOUDY 61 54 77 CALM 29.98S TC 16
FAIRFIELD* CLOUDY 63 52 67 CALM 29.98S TC 17
HARRISBURG* MOCLDY 60 56 85 CALM 29.98S TC 16
ROBINSON* MOCLDY 55 55 100 NE2 29.98F TC 13
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page