Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 150303
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM CDT MON SEP 14 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.
ILZ001-002-007-009-015-016-024-150400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 71 53 52 SE12 29.94S TC 22
STERLING* CLEAR 69 51 52 SE8 29.99S TC 21
SAVANNA* CLEAR 67 51 55 SE9 29.96S TC 20
$$
ILZ003-004-008-010-011-017-018-150400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 67 48 50 SE15G23 30.01S TC 19
FREEPORT* PTCLDY 65 53 65 SE13 29.99F TC 18
DE KALB* CLOUDY 64 49 57 SE14 30.04F TC 18
$$
ILZ005-006-012>014-019>023-150400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 68 46 45 SE12 30.05S TC 20
CHICAGO-MIDWAY PTCLDY 68 48 48 SE9 30.06S TC 20
AURORA MOCLDY 66 48 52 SE10 30.04S TC 19
JOLIET* PTCLDY 68 49 51 SE6 30.07R TC 20
WAUKEGAN CLOUDY 68 54 60 S12 30.04S TC 20
DUPAGE AIRPORT PTCLDY 66 47 50 SE7 30.05S TC 19
WHEELING PTCLDY 68 47 46 S14 30.05F TC 20
LANSING* CLEAR 66 49 54 SE9 30.08S TC 19
NORTHERLY ISL* N/A 67 53 61 SE12 N/A TC 19
$$
LMZ740>746-150400-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 68 62 120/ 19/ 25 1015.9F 4/ 5
WAUKEGAN HARBOR 68 64 150/ 21/ 27 1016.7F 4/ 4
WILMETTE BUOY 69 160/ 19/ 25 1019.9F 3/ 4
CHICAGO BUOY 69 69 1017.1S 3/ 4
HARRISON CRIB 69 150/ 19/ 23 N/A
NORTHERLY ISL 67 120/ 8/ 14 N/A
CALUMET HARBOR 68 140/ 11/ 16 1018.2
MICHIGAN CITY 66 140/ 13/ 16 1017.3F
MICH CITY BUOY 67 66 130/ 14/ 19 N/A 1/ 2
ST. JOSEPH BUOY 65 63 130/ 10/ 14 1020.1F 1
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-150400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 77 63 61 S10 29.95R TC 25
MACOMB* CLEAR 69 61 76 SE8 29.99R TC 21
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-150400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 69 54 58 SE14 30.05R TC 21
DECATUR CLEAR 69 54 58 SE8 30.06S TC 21
PEORIA CLEAR 72 53 51 SE10 30.01R TC 22
SPRINGFIELD CLEAR 77 52 41 SE14G24 30.01S TC 25
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-150400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 63 55 75 SE9 30.08F TC 17
MATTOON CLEAR 71 55 56 SE9 30.07F TC 22
$$
ILZ079-100>102-150400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 77 61 57 SE10 30.03R TC 25
CAHOKIA* CLEAR 76 63 64 SE7 30.01R TC 24
SPARTA* CLEAR 76 62 60 SE8 30.06S TC 25
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-150400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* CLEAR 70 52 52 E8 30.09S TC 21
MT. VERNON CLEAR 75 58 55 SE5 30.08S TC 24
CENTRALIA* CLEAR 71 58 63 SE7 30.07S TC 22
SALEM* CLEAR 75 57 53 MISG 30.07S TC 24
$$
ILZ067-068-072-073-078-083-087-091-150400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 69 60 73 E5 30.11R TC 21
FAIRFIELD* CLEAR 72 56 58 E3 30.08S TC 22
HARRISBURG* CLEAR 71 63 77 CALM 30.08S TC 22
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$