Regional Weather Roundup
Issued by NWS

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430
ASUS43 KLOT 171656
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 PM CDT MON AUG 17 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.

ILZ001-002-007-009-015-016-024-171800-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         FAIR      79  63  57 MISG      30.08  HX  80  TC  26
$$

ILZ003-004-008-010-011-017-018-171800-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       NOT AVBL
$$

ILZ005-006-012>014-019>023-171800-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTSUNNY   75  63  66 N6        30.04  TC  24
CHICAGO-MIDWAY NOT AVBL
AURORA         FAIR      77  65  66 NW10      30.05  TC  25
WAUKEGAN       PTSUNNY   74  62  66 NE6       30.05  TC  23
DUPAGE AIRPORT PTSUNNY   75  63  66 N8        30.05  TC  24
WHEELING       PTSUNNY   75  64  68 NE6       30.07  TC  24
$$

LMZ740>746-171800-
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            72 74   20/  8/ 12 1017.2R         2/ 4
WAUKEGAN HARBOR            72 74  360/ 10/ 14 1018.0R         2/ 4
WILMETTE BUOY              72      60/ 10/ 14 1020.7R         3/ 5
CHICAGO BUOY               72 73              1016.7R         2/ 4
HARRISON CRIB              72      10/ 13/ 13   N/A
NORTHERLY ISL              72      20/  9/ 12   N/A
CALUMET HARBOR                    360/  9/ 13 1017.7
MICHIGAN CITY              72      20/ 15/ 16 1015.6
MICH CITY BUOY             71 74   10/ 12/ 16   N/A           3/ 5
ST. JOSEPH BUOY            70 75   10/ 12/ 16 1017.9R         3/ 5
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-171800-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-171800-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    FAIR      79  64  60 NW13      30.08  HX  81  TC  26
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-171800-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

ILZ079-100>102-171800-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          MOSUNNY   81  66  61 N9        30.09  HX  83  TC  27
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-171800-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
MT. VERNON     PTSUNNY   82  72  69 N8        30.04F HX  87  TC  28
$$

ILZ067-068-072-073-078-083-087-091-171800-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

ABBREVIATIONS USED IN REMARKS
   TC - TEMPERATURE IN CELSIUS
  WCI - WIND CHILL INDEX
   HX - HEAT INDEX
  VSB - VISIBILITY
$$