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

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180
ASUS43 KLOT 041401
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 AM 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.

ILZ001-002-007-009-015-016-024-041500-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     -1  -4  87 W5        30.44R WCI -11 TC -18
STERLING*      CLEAR      6  -1  73 N6        30.44R WCI  -4 TC -14
$$

ILZ003-004-008-010-011-017-018-041500-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       CLEAR      1  -5  75 NW5       30.43R WCI  -9 TC -17
DE KALB*       CLEAR      3  -3  75 CALM      30.39R TC -16
PERU*          CLEAR      2  -3  80 NW3       30.43R TC -16
$$

ILZ005-006-012>014-019>023-041500-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY     7  -4  60 N9        30.38R WCI  -7 TC -14
CHICAGO-MIDWAY PTCLDY    10  -1  61 N12       30.39R WCI  -5 TC -12
AURORA         CLEAR     -1  -7  75 N9        30.39R WCI -16 TC -18
JOLIET*        CLEAR     10   2  71 N6        30.41R WCI   0 TC -12
WAUKEGAN       CLEAR      5  -4  66 NW8       30.39R WCI  -8 TC -15
DUPAGE AIRPORT CLEAR      3  -4  72 N9        30.38R WCI -12 TC -16
WHEELING       CLEAR      6  -2  69 N7        30.41R WCI  -6 TC -14
MORRIS*        CLEAR      2  -3  82 NW3       30.41R TC -17
ROMEOVILLE*    CLEAR      7   1  78 CALM      30.40R TC -14
LANSING*       CLEAR     10  -3  53 NW7       30.39R WCI   0 TC -12
NORTHERLY ISL*   N/A     15   7  70 NW10        N/A  WCI   3 TC  -9
$$

LMZ740>746-041500-
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           22 44  350/ 17/ 23 1028.8R
HARRISON CRIB              14     310/ 16/ 18   N/A
NORTHERLY ISL              14     290/  7/ 14   N/A
CALUMET HARBOR                    270/  5/ 10 1028.0
BURNS HARBOR               25     360/  8/ 11 1027.8R
MICHIGAN CITY              24     340/ 20/ 23 1027.9R
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-041500-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         CLEAR      5   0  79 N7        30.43R WCI  -7 TC -15
GALESBURG*     CLEAR     -1  -1 100 NW5       30.44  WCI -12 TC -19
MACOMB*        CLEAR      1  -3  85 NW6       30.45S WCI -11 TC -17
JACKSONVILLE*  PTCLDY     4   0  83 CALM      30.44R TC -16
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-041500-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        PTCLDY     2  -3  77 NW5       30.42R WCI  -7 TC -16
BLOOMINGTON    PTCLDY     7   2  80 N13       30.39R WCI  -9 TC -14
DECATUR        PTCLDY     9   4  80 N9        30.40R WCI  -4 TC -13
PEORIA         CLEAR      7   2  80 N5        30.43R WCI  -2 TC -14
LACON*         CLEAR      2  -3  80 CALM      30.44R HAZE    TC -17
LINCOLN*       CLEAR     11   1  64 N5        30.42S WCI   3 TC -12
SPRINGFIELD    PTCLDY    10   4  76 N3        30.43R TC -12
TAYLORVILLE    PTCLDY    11   6  79 N7        30.42R WCI   0 TC -12
$$

ILZ033-039-045-046-055>057-062-063-041500-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      CLEAR     10   3  73 N13       30.36R WCI  -5 TC -12
RANTOUL*       CLEAR     10   2  72 N13       30.37S WCI  -6 TC -12
MATTOON        PTCLDY    12   6  77 N9        30.37R WCI   0 TC -11
PARIS*         PTCLDY    15   5  65 N8        30.37R WCI   4 TC  -9
$$

ILZ079-100>102-041500-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          CLEAR     16   9  73 N8        30.42R WCI   5 TC  -9
BELLEVILLE     CLOUDY    20  13  72 N9        30.42R WCI  10 TC  -6
CAHOKIA*       CLOUDY    19  12  74 N10       30.44R WCI   7 TC  -7
SPARTA*        PTCLDY    21  15  77 N9G16     30.42R WCI  10 TC  -6
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-041500-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     CLOUDY    25  19  78 N14       30.38R WCI  13 TC  -4
CAIRO*         CLOUDY    31  27  84 N10       30.36R WCI  23 TC   0
EFFINGHAM*     PTCLDY    17  10  73 NW8       30.41R WCI   6 TC  -8
MARION         CLOUDY    27  21  80 N13       30.36R WCI  16 TC  -3
MT. VERNON     PTCLDY   N/A N/A N/A N6        30.38R
CENTRALIA*       N/A    N/A N/A N/A MISG        N/A
SALEM*         PTCLDY    22  15  74 N9        30.39R WCI  12 TC  -5
METROPOLIS*    CLOUDY    32  29  88 CALM      30.35R FOG     TC   0
$$

ILZ067-068-072-073-078-083-087-091-041500-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  MOSUNNY   25  16  68 N9        30.36R WCI  15 TC  -4
FLORA*         PTCLDY    21  14  73 N12       30.39R WCI   9 TC  -6
FAIRFIELD*     PTCLDY    24  17  75 N10       30.37R WCI  13 TC  -5
HARRISBURG*    CLOUDY    29  23  77 N10       30.37R WCI  20 TC  -2
ROBINSON*      PTCLDY    21  16  79 N10       30.36R WCI  10 TC  -6
$$

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