Regional Weather Roundup
Issued by NWS

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160
ASUS43 KLOT 291901
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM CDT TUE SEP 29 2026

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.

ILZ001-002-007-009-015-016-024-292000-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         MOSUNNY   80  51  36 S8        29.93F HX  80  TC  27
STERLING*      SUNNY     81  45  28 VRB6      29.96F HX  80  TC  27
SAVANNA*       MOSUNNY   77  54  44 SW7       29.94F TC  25
$$

ILZ003-004-008-010-011-017-018-292000-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTSUNNY   78  47  33 S5        29.98F TC  26
FREEPORT*      MOSUNNY   78  49  34 SW10      29.98F TC  26
DE KALB*       MOSUNNY   77  49  36 S7        29.99F TC  25
$$

ILZ005-006-012>014-019>023-292000-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTSUNNY   77  51  40 SW9       29.99F TC  25
CHICAGO-MIDWAY PTSUNNY   77  52  41 SW7G17    29.99F TC  25
AURORA         SUNNY     78  47  33 SW12      29.98F TC  26
JOLIET*        SUNNY     79  52  38 S6        29.99F TC  26
WAUKEGAN       SUNNY     70  61  73 S9        29.99F TC  21
DUPAGE AIRPORT SUNNY     76  52  43 S7        30.00F TC  24
WHEELING       SUNNY     76  50  40 SW6       30.01F TC  24
LANSING*       SUNNY     78  51  39 SW5       30.00F TC  25
NORTHERLY ISL*   N/A     68  60  75 E5          N/A  TC  20
$$

LMZ740>746-292000-
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)
WINTHROP HARBOR            65 65  100/  8/ 10 1017.1F         1
WAUKEGAN HARBOR            65 66  100/  8/ 10 1016.3F         1
WILMETTE BUOY              65      90/  8/ 10 1018.6F         1
CHICAGO BUOY               66 64  120/  8/ 12 1014.9F         1
HARRISON CRIB              67     110/  9/ 10   N/A
NORTHERLY ISL              68     100/  5/  8   N/A
CALUMET HARBOR             75     190/  7/ 12 1016.2
MICHIGAN CITY              69      20/  5/  5 1015.4F
MICH CITY BUOY             65 62   40/  4/  6   N/A           0
ST. JOSEPH BUOY            65 64   CALM  /  2 1017.3F         0
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-292000-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         SUNNY     83  51  33 S13       29.94F HX  81  TC  28
GALESBURG*     MOSUNNY   79  52  38 S12       29.96F TC  26
MACOMB*        SUNNY     82  51  34 S9        29.97F HX  81  TC  28
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-292000-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    MOSUNNY   81  50  33 S9        30.01F HX  80  TC  27
DECATUR        MOSUNNY   82  46  28 S9        30.00F HX  80  TC  28
PEORIA         SUNNY     80  48  32 S5        29.97F TC  27
LACON*         SUNNY     76  48  37 SW7       29.97F TC  25
SPRINGFIELD    SUNNY     83  45  26 SW8       29.98F HX  81  TC  28
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-292000-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      MOSUNNY   82  44  26 VRB7      30.01F HX  80  TC  28
MATTOON        SUNNY     80  45  28 CALM      30.00F TC  27
$$

ILZ079-100>102-292000-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          SUNNY     81  50  34 SE9       29.99F HX  80  TC  27
BELLEVILLE     PTSUNNY   83  51  31 SE6       29.96F HX  82  TC  29
CAHOKIA*       SUNNY     84  48  28 E7        29.98F HX  82  TC  29
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-292000-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     SUNNY     82  45  26 S10G18    29.99F HX  80  TC  28
CAIRO*         SUNNY     85  50  29 SE7       29.99F HX  83  TC  29
EFFINGHAM*     SUNNY     80  44  27 CALM      30.03F TC  27
MT. VERNON     SUNNY     83  46  27 SW6       30.00F HX  81  TC  28
CENTRALIA*     SUNNY     84  45  25 SW5       30.00F HX  82  TC  29
SALEM*         SUNNY     84  48  28 MISG      30.00F HX  82  TC  29
$$

ILZ067-068-072-073-078-083-087-091-292000-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  SUNNY     80  51  36 VRB5      30.02F HX  80  TC  27
FLORA*         SUNNY     82  48  30 CALM      30.00F HX  81  TC  28
FAIRFIELD*     SUNNY     82  45  26 CALM      30.00F HX  80  TC  28
HARRISBURG*    SUNNY     83  49  30 CALM      30.00F HX  82  TC  29
$$

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