Regional Weather Roundup
Issued by NWS

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479
ASUS43 KLOT 091210
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CST TUE DEC 09 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.

ILZ001-002-007-009-015-016-024-091300-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     27  23  85 SW9       29.82F WCI  18 TC  -3
6HR MIN TEMP:  25; 6HR MAX TEMP:  28;

STERLING*      CLEAR     23  20  88 VRB7      29.81F WCI  15 TC  -5
$$

ILZ003-004-008-010-011-017-018-091300-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       CLOUDY    22  18  85 S9        29.81F WCI  12 TC  -6
6HR MIN TEMP:  19; 6HR MAX TEMP:  23; 6HR PCP: TRACE;

FREEPORT*      CLOUDY    25  22  87 SW17      29.79F WCI  12 TC  -4
DE KALB*       MOCLDY    19  17  90 S10       29.82F WCI   7 TC  -7
PERU*          CLEAR     28  23  80 SW14      29.85F WCI  17 TC  -2
$$

ILZ005-006-012>014-019>023-091300-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    26  19  74 SW13G24   29.82F WCI  15 TC  -3
6HR MIN TEMP:  21; 6HR MAX TEMP:  26; 6HR PCP:  0.01;

CHICAGO-MIDWAY PTCLDY    26  19  74 SW14      29.84F WCI  14 TC  -3
6HR MIN TEMP:  22; 6HR MAX TEMP:  26; 6HR PCP: TRACE;

AURORA         CLEAR     20  17  88 S9        29.83F WCI   9 TC  -7
6HR MIN TEMP:  19; 6HR MAX TEMP:  22; 6HR PCP: TRACE;

JOLIET*        CLEAR     28  23  79 S12       29.87F WCI  18 TC  -2
WAUKEGAN       CLOUDY    26  20  77 SW17      29.78F WCI  13 TC  -3
6HR MIN TEMP:  21; 6HR MAX TEMP:  26; 6HR PCP: TRACE;

DUPAGE AIRPORT MOCLDY    23  19  85 S10       29.81F WCI  12 TC  -5
6HR MIN TEMP:  20; 6HR MAX TEMP:  24; 6HR PCP: TRACE;

WHEELING       MOCLDY    26  20  77 SW17G28   29.82F WCI  13 TC  -3
6HR MIN TEMP:  21; 6HR MAX TEMP:  26; 6HR PCP: TRACE;

MORRIS*        CLEAR     24  21  87 S10       29.85F WCI  14 TC  -4
ROMEOVILLE*    CLEAR     25  21  86 S16       29.86F WCI  12 TC  -4
LANSING*       CLEAR     26  17  68 S15G23    29.88F WCI  13 TC  -3
NORTHERLY ISL*   N/A     26  19  75 S17         N/A  WCI  13 TC  -3
$$

LMZ740>746-091300-
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)
HARRISON CRIB              28     200/ 27/ 30   N/A
NORTHERLY ISL              26     200/ 10/ 17   N/A
CALUMET HARBOR             27     180/ 10/ 16 1010.9
BURNS HARBOR               26     180/  9/ 14 1011.9F
MICHIGAN CITY              26     180/ 19/ 24 1011.9F
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-091300-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         CLEAR     34  29  82 SW9       29.90F WCI  27 TC   1
GALESBURG*     CLEAR     25  25 100 S7        29.87S WCI  17 TC  -4
MACOMB*        CLEAR     32  28  86 SW10      29.90S WCI  23 TC   0
JACKSONVILLE*  CLEAR     32  25  77 S9        29.93S WCI  24 TC   0
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-091300-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        CLEAR     29  23  76 SW16      29.88F WCI  18 TC  -1
BLOOMINGTON    CLEAR     28  24  85 SW20      29.89F WCI  15 TC  -2
DECATUR        MOCLDY    30  24  78 SW18      29.95S WCI  18 TC  -1
PEORIA         CLEAR     26  23  88 S9        29.89F WCI  17 TC  -3
6HR MIN TEMP:  23; 6HR MAX TEMP:  27;

LINCOLN*       CLEAR     31  23  70 S8        29.93S WCI  24 TC   0
SPRINGFIELD    PTCLDY    32  25  75 SW12G20   29.93S WCI  23 TC   0
6HR MIN TEMP:  26; 6HR MAX TEMP:  32;

TAYLORVILLE    MOCLDY    32  26  77 S17       29.96S WCI  21 TC   0
6HR MIN TEMP:  26; 6HR MAX TEMP:  32;

$$

ILZ033-039-045-046-055>057-062-063-091300-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      PTCLDY    28  23  81 S22       29.94S WCI  14 TC  -2
RANTOUL*       MOCLDY    29  22  76 S13       29.94S WCI  18 TC  -2
MATTOON        MOCLDY    29  22  75 S15G22    29.97F WCI  18 TC  -2
PARIS*         CLOUDY    30  22  73 S18G26    29.99F WCI  18 TC  -1
$$

ILZ079-100>102-091300-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          CLOUDY    34  27  76 S10       29.99F WCI  26 TC   1
BELLEVILLE     CLOUDY    35  27  71 S9        30.00F WCI  28 TC   2
CAHOKIA*       CLOUDY    37  26  64 S9        30.00F WCI  30 TC   3
SPARTA*        MOCLDY    33  27  78 S10       30.06S WCI  24 TC   0
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-091300-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     MOCLDY    33  28  81 S8        30.08F WCI  26 TC   1
6HR MIN TEMP:  26; 6HR MAX TEMP:  34;

CAIRO*         MOCLDY    32  29  90 S7        30.16F WCI  26 TC   0
EFFINGHAM*     MOCLDY    30  24  77 S8        30.03F WCI  23 TC  -1
MT. VERNON     MOCLDY   N/A N/A N/A SW13      30.07S
CENTRALIA*       N/A    N/A N/A N/A MISG        N/A
SALEM*         MOCLDY    34  26  73 S12G17    30.03S WCI  25 TC   1
METROPOLIS*    MOCLDY    31  27  83 CALM      30.16S TC   0
$$

ILZ067-068-072-073-078-083-087-091-091300-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLOUDY    30  24  78 S10       30.08F WCI  21 TC  -1
FLORA*         MOCLDY    32  25  74 S12       30.06S WCI  23 TC   0
FAIRFIELD*     MOCLDY    30  25  80 S8        30.08S WCI  23 TC  -1
HARRISBURG*    CLOUDY    32  27  81 SW10      30.11F WCI  24 TC   0
ROBINSON*      MOCLDY    30  25  80 S12       30.05F WCI  21 TC  -1
$$

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