Regional Weather Roundup
Issued by NWS

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251
ASUS43 KLOT 042001
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 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.

ILZ001-002-007-009-015-016-024-042100-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         SUNNY     15  -1  49 CALM      30.36F TC  -9
STERLING*      SUNNY     12  -1  56 E3        30.36F TC -11
$$

ILZ003-004-008-010-011-017-018-042100-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       MOSUNNY   13  -2  51 SW3       30.36F TC -11
DE KALB*       SUNNY     13  -2  51 CALM      30.33F TC -11
PERU*          SUNNY     12  -1  57 CALM      30.36F TC -11
$$

ILZ005-006-012>014-019>023-042100-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  MOSUNNY   18  -5  36 N5        30.33F WCI  11 TC  -8
CHICAGO-MIDWAY MOSUNNY   21  10  62 N6        30.33F WCI  13 TC  -6
AURORA         SUNNY     10   2  69 NW5       30.33F WCI   2 TC -12
JOLIET*        SUNNY     20   2  46 N5        30.34F WCI  13 TC  -7
WAUKEGAN       SUNNY     17 -10  29 CALM      30.33F TC  -8
DUPAGE AIRPORT SUNNY     17  -6  35 CALM      30.32F TC  -8
WHEELING       SUNNY     19  -8  30 CALM      30.35F TC  -7
MORRIS*        SUNNY     13   3  65 NW3       30.34F TC -11
ROMEOVILLE*    SUNNY     19  -4  35 NW5       30.34F WCI  13 TC  -7
LANSING*       SUNNY     24   9  53 CALM      30.33F TC  -5
NORTHERLY ISL*   N/A     24  13  62 N7          N/A  WCI  16 TC  -4
$$

LMZ740>746-042100-
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           21 44  290/  2/  6 1028.6F
HARRISON CRIB              21     330/  9/ 11   N/A
NORTHERLY ISL              24     350/  4/  8   N/A
CALUMET HARBOR             22     320/  6/  8 1026.6
BURNS HARBOR               26      50/  2/  5 1027.1F
MICHIGAN CITY              25      20/  3/  6 1027.8
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-042100-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         SUNNY     17   6  62 NW3       30.35F TC  -8
GALESBURG*     SUNNY     15   8  72 CALM      30.36F TC  -9
MACOMB*        SUNNY     14   4  64 CALM      30.38F TC -10
JACKSONVILLE*  SUNNY     17   1  50 NE3       30.36F TC  -8
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-042100-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        SUNNY     13   1  58 NW5       30.36S WCI   5 TC -10
BLOOMINGTON    SUNNY     24   5  44 NE7       30.33F WCI  16 TC  -4
DECATUR        SUNNY     18   4  54 NE6       30.33F WCI  10 TC  -8
PEORIA         SUNNY     20  -1  40 CALM      30.35F TC  -7
LACON*         SUNNY     15  -1  50 S3        30.37S TC -10
LINCOLN*       SUNNY     16  -1  46 N5        30.36F WCI   9 TC  -9
SPRINGFIELD    SUNNY     17   2  51 N6        30.35F WCI   9 TC  -8
TAYLORVILLE    SUNNY     16   4  59 N8        30.35S WCI   5 TC  -9
$$

ILZ033-039-045-046-055>057-062-063-042100-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      SUNNY     19   9  65 N7        30.32F WCI  10 TC  -7
RANTOUL*       SUNNY     16   7  66 N5        30.33S WCI   9 TC  -9
MATTOON        SUNNY     17   7  64 N10       30.31F WCI   5 TC  -8
PARIS*         SUNNY     24  11  56 N5        30.32S WCI  18 TC  -4
$$

ILZ079-100>102-042100-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          SUNNY     21   3  45 NE7       30.34F WCI  13 TC  -6
BELLEVILLE     MOSUNNY   24  11  58 N7        30.31F WCI  16 TC  -4
CAHOKIA*       MOSUNNY   25  11  55 N6        30.32F WCI  18 TC  -4
SPARTA*        PTSUNNY   24  13  63 N7        30.32F WCI  16 TC  -4
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-042100-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     CLOUDY    29  18  63 N8        30.31F WCI  21 TC  -2
CAIRO*         PTSUNNY   33  24  71 NE8       30.27F WCI  25 TC   0
EFFINGHAM*     MOSUNNY   23  11  61 NW5       30.34F WCI  17 TC  -5
MARION         MOSUNNY   30  19  64 N6        30.30F WCI  24 TC  -1
MT. VERNON     PTSUNNY  N/A N/A N/A N8        30.31F
CENTRALIA*       N/A    N/A N/A N/A MISG        N/A
SALEM*         MOSUNNY   24  14  65 N6        30.31F WCI  17 TC  -4
METROPOLIS*    PTSUNNY   33  21  61 CALM      30.28F TC   0
$$

ILZ067-068-072-073-078-083-087-091-042100-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLOUDY    29  19  66 N9        30.30F WCI  20 TC  -2
FLORA*         PTSUNNY   23  16  74 N7        30.32F WCI  15 TC  -5
FAIRFIELD*     CLOUDY    27  19  70 N8        30.31F WCI  19 TC  -3
HARRISBURG*    PTSUNNY   31  19  61 N7        30.30F WCI  24 TC  -1
$$

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