Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 290901
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM CDT SAT AUG 29 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.
ILZ001-002-007-009-015-016-024-291000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 64 59 83 S5 30.09R TC 18
STERLING* CLEAR 61 58 90 W3 30.13R TC 16
SAVANNA* PTCLDY 62 59 92 S5 30.11R TC 17
$$
ILZ003-004-008-010-011-017-018-291000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 59 58 96 CALM 30.14R TC 15
FREEPORT* CLEAR 64 62 94 S6 30.13R TC 18
$$
ILZ005-006-012>014-019>023-291000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 67 58 72 SW5 30.11F TC 19
CHICAGO-MIDWAY PTCLDY 68 57 68 S7 30.12S TC 20
AURORA CLEAR 57 56 96 E3 30.11F TC 14
JOLIET* CLEAR 60 60 100 CALM 30.13F TC 15
WAUKEGAN PTCLDY 62 59 90 SW5 30.10F FOG TC 17
DUPAGE AIRPORT CLEAR 59 57 94 S3 30.12F TC 15
WHEELING PTCLDY 62 59 90 CALM 30.13S TC 17
LANSING* PTCLDY 63 58 84 CALM 30.14S TC 17
NORTHERLY ISL* N/A 69 56 62 S6 N/A TC 21
$$
LMZ740>746-291000-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 70 73 190/ 8/ 10 1018.4F 1
WAUKEGAN HARBOR 71 74 230/ 10/ 14 1019.2F 1
WILMETTE BUOY 72 220/ 10/ 16 1022.5F 1
CHICAGO BUOY 73 74 1019.1R 1
NORTHERLY ISL 71 220/ 3/ 7 N/A
CALUMET HARBOR 68 200/ 3/ 4 1020.3
MICH CITY BUOY 71 74 180/ 14/ 16 N/A 1/ 2
ST. JOSEPH BUOY 71 74 190/ 12/ 14 1021.4F 2/ 3
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-291000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 66 59 78 SE6 30.11S TC 19
MACOMB* PTCLDY 59 59 100 CALM 30.14R TC 15
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-291000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 64 61 90 S6 30.15F TC 18
DECATUR CLEAR 60 58 92 CALM 30.15S TC 16
PEORIA CLEAR 64 60 87 CALM 30.12F TC 18
LACON* CLEAR 62 56 82 CALM 30.11F TC 17
LINCOLN* CLEAR 62 62 100 SE3 30.14S TC 17
SPRINGFIELD CLEAR 61 59 93 CALM 30.13S TC 16
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-291000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 59 58 96 E6 30.15S TC 15
MATTOON CLEAR 63 60 90 SW7 30.15R TC 17
$$
ILZ079-100>102-291000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 62 60 94 CALM 30.13S TC 17
BELLEVILLE CLEAR 64 63 94 CALM 30.10S FOG TC 18
CAHOKIA* CLEAR 62 61 96 CALM 30.12R TC 17
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-291000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* CLEAR 60 58 94 CALM 30.16S TC 16
MARION CLEAR 63 63 98 CALM 30.14R TC 17
MT. VERNON CLEAR 57 57 100 CALM 30.13S TC 14
CENTRALIA* CLEAR 60 59 97 MISG 30.14S TC 16
SALEM* CLEAR 66 61 84 MISG 30.14S TC 19
$$
ILZ067-068-072-073-078-083-087-091-291000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 61 60 97 CALM 30.14S TC 16
FAIRFIELD* CLEAR 62 59 88 CALM 30.13S TC 17
HARRISBURG* CLEAR 62 62 100 CALM 30.13S TC 17
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$