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

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205
ASUS43 KLOT 040706
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 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.

ILZ001-002-007-009-015-016-024-040800-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         PTCLDY    11   5  77 NW8       30.36R WCI  -1 TC -12
STERLING*      PTCLDY    11   6  81 NW7       30.34R WCI   0 TC -12
$$

ILZ003-004-008-010-011-017-018-040800-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTCLDY    10   4  76 NW9       30.32R WCI  -3 TC -12
DE KALB*       CLEAR     12   5  72 N10       30.28R WCI  -1 TC -11
PERU*          PTCLDY    14   6  72 NW9       30.31R WCI   2 TC -10
$$

ILZ005-006-012>014-019>023-040800-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    15   4  61 NW10      30.26R WCI   2 TC  -9
CHICAGO-MIDWAY PTCLDY    17   6  62 NW13G21   30.26R WCI   4 TC  -8
AURORA         PTCLDY     6   0  76 N9        30.27R WCI  -8 TC -14
JOLIET*        PTCLDY    19   9  65 N6        30.29R WCI  10 TC  -7
WAUKEGAN       CLEAR     12   3  67 NW9       30.25R WCI   0 TC -11
DUPAGE AIRPORT CLEAR     14   6  70 NW14      30.26R WCI  -1 TC -10
WHEELING       CLEAR     14   5  67 N9        30.28R WCI   2 TC -10
MORRIS*        PTCLDY    15   9  78 N6        30.28R WCI   6 TC  -9
ROMEOVILLE*    PTCLDY    16   7  67 N8        30.28R WCI   5 TC  -9
LANSING*       PTCLDY    18   4  54 NW10      30.26R WCI   6 TC  -8
NORTHERLY ISL*   N/A     19   9  65 NW6         N/A  WCI  11 TC  -7
$$

LMZ740>746-040800-
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           26 44  330/ 21/ 25 1024.0R         7/ 7
HARRISON CRIB              20     320/ 22/ 25   N/A
NORTHERLY ISL              20     300/  7/ 16   N/A
CALUMET HARBOR             19     290/  9/ 13 1023.6
BURNS HARBOR               27     320/  8/ 12 1023.7R
MICHIGAN CITY              27     320/ 17/ 23 1022.9R
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-040800-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOCLDY    14  10  84 NW12      30.34S WCI   0 TC -10
GALESBURG*     MOCLDY    13  11  92 NW8         N/A  WCI   2 TC -10
MACOMB*        MOCLDY    15  10  81 NW12      30.38R WCI   1 TC -10
JACKSONVILLE*  MOCLDY    19  11  71 N14       30.32R WCI   6 TC  -7
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-040800-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        MOCLDY    18  10  71 N13       30.28R WCI   4 TC  -8
BLOOMINGTON    MOCLDY    20  14  77 N20       30.27R WCI   4 TC  -7
DECATUR        CLOUDY    24  18  77 NW16      30.27R WCI  11 TC  -4
PEORIA         MOCLDY    17  10  74 VRB6      30.32R WCI   9 TC  -8
LACON*         MOCLDY    17   7  64 N9        30.31R WCI   6 TC  -8
LINCOLN*       MOCLDY    21  12  68 NW8       30.30R WCI  11 TC  -6
SPRINGFIELD    MOCLDY    20  14  77 NW12      30.30R WCI   8 TC  -7
TAYLORVILLE    MOCLDY    23  18  80 N18       30.28R WCI   9 TC  -5
$$

ILZ033-039-045-046-055>057-062-063-040800-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      CLOUDY    24  17  74 NW15      30.22S WCI  11 TC  -4
RANTOUL*       MOCLDY    24  17  75 NW13G18   30.23R WCI  12 TC  -5
MATTOON        CLOUDY    27  22  81 N21G30    30.22R WCI  13 TC  -3
PARIS*         CLOUDY    28  23  82 N12       30.22R WCI  18 TC  -2
$$

ILZ079-100>102-040800-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          MOCLDY    27  19  71 N12G17    30.30R WCI  17 TC  -3
BELLEVILLE     CLOUDY    31  25  78 N12G18    30.26R WCI  22 TC  -1
CAHOKIA*       MOCLDY    30  24  78 N14       30.28R WCI  19 TC  -1
SPARTA*        CLOUDY    32  31  96 N14       30.26R WCI  22 TC   0
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-040800-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     MOCLDY    29  27  92 CALM      30.24R TC  -2
CAIRO*         CLOUDY    32  30  92 N6        30.23S WCI  26 TC   0
EFFINGHAM*     CLOUDY    30  27  88 NW9       30.26R WCI  22 TC  -1
MT. VERNON     CLOUDY   N/A N/A N/A CALM      30.24R
CENTRALIA*       N/A    N/A N/A N/A MISG        N/A
SALEM*         CLOUDY    32  28  86 N14       30.24R FOG     WCI  22
METROPOLIS*    CLOUDY    30  29  97 CALM      30.23S FOG     TC  -1
$$

ILZ067-068-072-073-078-083-087-091-040800-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLOUDY    30  27  88 CALM      30.22R TC  -1
FLORA*         CLOUDY    32  30  93 N10       30.24R FOG     WCI  24
FAIRFIELD*     CLOUDY    31  29  90 CALM      30.23R TC   0
HARRISBURG*    MOCLDY    30  26  86 CALM      30.24R TC  -1
ROBINSON*      CLOUDY    30  30 100 NW5       30.21R FOG     WCI  25
$$

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