Regional Weather Roundup
Issued by NWS

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736
ASUS43 KLOT 241001
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT MON AUG 24 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.

ILZ001-002-007-009-015-016-024-241100-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     54  53  97 CALM      30.06R TC  12
STERLING*      CLEAR     53  53 100 E3        30.07R FOG     TC  12
SAVANNA*       FOG       53  52  96 CALM      30.06S VSB 1/2 TC  12
$$

ILZ003-004-008-010-011-017-018-241100-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       CLEAR     52  52 100 CALM      30.08R TC  11
FREEPORT*      CLEAR     51  49  95 CALM      30.08S TC  10
$$

ILZ005-006-012>014-019>023-241100-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    59  53  80 W5        30.03R TC  15
CHICAGO-MIDWAY CLEAR     60  54  80 CALM      30.03S TC  16
AURORA         CLEAR     52  51  97 W5        30.05R TC  11
JOLIET*        CLEAR     54  54 100 CALM      30.05S TC  12
WAUKEGAN       NOT AVBL
DUPAGE AIRPORT CLEAR     54  52  94 CALM      30.05S TC  12
WHEELING       CLEAR     58  54  86 W5        30.05R TC  14
LANSING*       CLEAR     55  53  93 W3        30.04S TC  13
NORTHERLY ISL*   N/A     64  54  69 W8          N/A  TC  18
$$

LMZ740>746-241100-
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            62 73  280/  6/  8 1016.2R         2/ 6
WAUKEGAN HARBOR            62 73  260/  8/ 10 1017.0R         1/ 5
WILMETTE BUOY              69      90/  6/ 10 1019.2R         2/ 6
CHICAGO BUOY               67 73              1015.8R         2/ 5
NORTHERLY ISL              65     280/  7/  8   N/A
CALUMET HARBOR             62     240/  3/  5 1017.0R
MICH CITY BUOY             67 74  120/  4/  6   N/A           2/ 5
ST. JOSEPH BUOY            64 74   90/  8/ 10 1017.3F         2/ 4
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-241100-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         PTCLDY    57  54  89 CALM      30.06S TC  14
MACOMB*        CLEAR     53  53 100 CALM      30.09S TC  12
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-241100-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    CLEAR     59  55  87 W3        30.07F TC  15
DECATUR        CLEAR     57  55  93 CALM      30.07S TC  14
PEORIA         CLEAR     55  55 100 CALM      30.06S TC  13
LINCOLN*       FOG       54  54 100 CALM      30.07S VSB 3/4 TC  12
SPRINGFIELD    CLEAR     55  54  96 CALM      30.06F TC  13
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-241100-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      CLEAR     55  55 100 W5        30.07S FOG     TC  13
MATTOON        CLEAR     57  57 100 CALM      30.06S TC  14
$$

ILZ079-100>102-241100-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CAHOKIA*       PTCLDY    57  56  96 CALM      30.06S TC  14
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-241100-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
MARION           N/A     58  57  97 CALM      30.07S FOG     TC  14
MT. VERNON     CLEAR     53  53 100 CALM      30.08  FOG     TC  12
CENTRALIA*       N/A     55  55  98 CALM      30.07S FOG     TC  13
SALEM*           N/A     58  57  98 MISG        N/A  TC  14
$$

ILZ067-068-072-073-078-083-087-091-241100-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLEAR     60  58  92 CALM      30.06R TC  16
FAIRFIELD*     CLEAR     58  57  96 CALM      30.07R TC  15
HARRISBURG*    CLEAR     56  56 100 CALM      30.07S TC  13
$$

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