Regional Weather Roundup
Issued by NWS

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929
ASUS43 KLOT 181056
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CDT MON AUG 18 2025

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.

ILZ001-002-007-009-015-016-024-181200-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     71  69  93 E7        29.99R TC  22
$$

ILZ003-004-008-010-011-017-018-181200-
NORTH CENTRAL ILLINOIS

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

ILZ005-006-012>014-019>023-181200-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    73  68  84 SE10      30.06R TC  23
CHICAGO-MIDWAY NOT AVBL
AURORA         MOCLDY    73  70  90 SE7       30.04S TC  23
WAUKEGAN       CLOUDY    75  68  78 SE12      30.07S TC  24
DUPAGE AIRPORT MOCLDY    74  70  87 SE7       30.05R TC  23
WHEELING       CLOUDY    74  70  87 MISG      30.08R TC  23
NORTHERLY ISL*   N/A     72  67  84 SE10        N/A  TC  22
$$

LMZ740>746-181200-
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)
S. MID LAKE BUOY           69 75  110/ 19/ 25 1018.6F
WINTHROP HARBOR            74 75  150/ 16/ 21   N/A           4/ 6
WAUKEGAN HARBOR            75 75  150/ 16/ 19   N/A           4/ 5
WILMETTE BUOY              74     140/ 16/ 21 1020.2R         4/ 5
NORTHERLY ISL              73     120/ 10/ 13   N/A
CALUMET HARBOR             73     130/  6/ 11 1016.9
BURNS HARBOR               72     130/  8/ 11 1018.6S
MICHIGAN CITY              71     130/ 13/ 17 1016.7S
MICH CITY BUOY             72 77  130/ 16/ 21 1016.7F         4
ST. JOSEPH BUOY            70 78   90/ 21/ 29 1019.3F         3/ 6
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-181200-
WEST-CENTRAL ILLINOIS

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

ILZ028>032-037-038-041>044-048-051>054-059>061-181200-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    CLEAR     77  74  90 SE8       30.01S TC  25
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-181200-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      PTCLDY    74  73  97 CALM      30.05S FOG     TC  23
$$

ILZ079-100>102-181200-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CAHOKIA*       CLEAR     74  73  97 CALM      30.01R TC  23
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181200-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     CLEAR     72  71  97 CALM      30.03R FOG     TC  22
$$

ILZ067-068-072-073-078-083-087-091-181200-
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
$$