Regional Weather Roundup
Issued by NWS

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121
ASUS43 KLOT 151256
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 AM CDT TUE SEP 15 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.

ILZ001-002-007-009-015-016-024-151400-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLOUDY    69  68  96 NW3       30.01R TC  21
STERLING*      CLOUDY    68  68 100 SW3       30.02F FOG     TC  20
$$

ILZ003-004-008-010-011-017-018-151400-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       NOT AVBL
$$

ILZ005-006-012>014-019>023-151400-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    69  58  67 S10       30.02F TC  21
CHICAGO-MIDWAY NOT AVBL
AURORA         CLOUDY    65  60  84 S6        30.04S TC  18
WAUKEGAN       LGT RAIN  64  62  93 SW8       30.00S TC  18
DUPAGE AIRPORT LGT RAIN  65  60  84 S6        30.04R TC  18
WHEELING       LGT RAIN  69  59  70 S9        30.03S TC  21
ROMEOVILLE*    PTSUNNY   68  63  83 S3        30.07R TC  20
NORTHERLY ISL*   N/A     69  55  60 S8          N/A  TC  21
$$

LMZ740>746-151400-
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            64 60  140/  6/  8 1016.5S         3/ 5
WAUKEGAN HARBOR            66 63  190/  4/  8 1016.4R         2/ 5
WILMETTE BUOY              66     190/ 10/ 14 1018.5F         2/ 4
CHICAGO BUOY               69 65              1016.7R         1/ 3
HARRISON CRIB              71     240/ 15/ 19   N/A
NORTHERLY ISL              69     240/  2/ 11   N/A
CALUMET HARBOR                    240/  4/  8 1017.7
MICHIGAN CITY              66     180/  6/  8 1016.3R
MICH CITY BUOY             66 65  190/  4/  8   N/A           1/ 3
ST. JOSEPH BUOY            63 59  190/  4/  8 1018.7R         2/ 5
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-151400-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-151400-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    SUNNY     75  64  68 S9        30.04R TC  24
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-151400-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

ILZ079-100>102-151400-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          SUNNY     73  66  78 SE5       30.06R TC  23
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-151400-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
$$

ILZ067-068-072-073-078-083-087-091-151400-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
$$

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