National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Regional Weather Roundup
Issued by NWS

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780
ASUS43 KLOT 050258
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 PM CST THU DEC 04 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.

ILZ001-002-007-009-015-016-024-050400-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     -1  -6  79 E3        30.21F TC -18
$$

ILZ003-004-008-010-011-017-018-050400-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       MOCLDY    -4  -7  87 CALM      30.22F TC -20
$$

ILZ005-006-012>014-019>023-050400-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLEAR     12   2  64 SW3       30.23S TC -11
CHICAGO-MIDWAY NOT AVBL
AURORA         CLEAR     -8  -8 100 CALM      30.23F TC -22
WAUKEGAN       CLEAR     11  -2  56 W7        30.21F WCI   0 TC -12
DUPAGE AIRPORT CLEAR      4  -1  80 S3        30.22F TC -16
WHEELING       CLEAR     13   1  59 SW3       30.24F TC -11
NORTHERLY ISL*   N/A     20  10  65 SW9         N/A  WCI   9 TC  -7
$$

LMZ740>746-050400-
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           27 44  200/ 12/ 16 1023.7F
HARRISON CRIB              23     200/ 14/ 16   N/A
NORTHERLY ISL              21     250/  4/  7   N/A
CALUMET HARBOR                    200/  5/  6 1023.6
BURNS HARBOR               19     190/  5/  7 1024.7F
MICHIGAN CITY              19     180/ 10/ 14 1025.1F
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-050400-
WEST-CENTRAL ILLINOIS

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

ILZ028>032-037-038-041>044-048-051>054-059>061-050400-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    CLEAR      5   0  79 CALM      30.25F TC -15
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-050400-
EAST-CENTRAL ILLINOIS

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

ILZ079-100>102-050400-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          CLEAR     10   5  79 CALM      30.26F TC -12
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-050400-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     PTCLDY    20  16  84 NW5       30.25F WCI  13 TC  -7
$$

ILZ067-068-072-073-078-083-087-091-050400-
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
$$