Regional Weather Roundup
Issued by NWS

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908
ASUS43 KLOT 211056
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CDT TUE JUL 21 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.

ILZ001-002-007-009-015-016-024-211200-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     74  69  85 W9        29.73S TC  23
$$

ILZ003-004-008-010-011-017-018-211200-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTCLDY    71  68  90 W8        29.70S TC  22
$$

ILZ005-006-012>014-019>023-211200-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  MOCLDY    74  69  85 W5        29.68R TC  23
CHICAGO-MIDWAY NOT AVBL
AURORA         MOCLDY   N/A N/A N/A W5        29.70R
WAUKEGAN       CLEAR     72  68  87 W6        29.65S TC  22
DUPAGE AIRPORT MOCLDY    72  70  93 W6        29.69R TC  22
WHEELING       PTCLDY    75  68  78 W6        29.68R TC  24
NORTHERLY ISL*   N/A     75  69  81 W14         N/A  TC  24
$$

LMZ740>746-211200-
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            70 62              1005.3R         1
WAUKEGAN HARBOR            70 60              1006.0R         0
WILMETTE BUOY              76     320/ 10/ 14 1007.7R         1/ 2
CHICAGO BUOY               77 75  270/  8/ 10 1003.8R         1
HARRISON CRIB              76     270/ 12/ 13   N/A
NORTHERLY ISL              75     260/  8/  9   N/A
CALUMET HARBOR                    230/  4/  7 1004.7
BURNS HARBOR                                  1005.1S
MICHIGAN CITY              77     250/ 13/ 14 1002.1F
MICH CITY BUOY             76 76  270/ 12/ 16   N/A           2/ 3
ST. JOSEPH BUOY            75 74  250/ 14/ 19 1005.5R         2/ 4
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-211200-
WEST-CENTRAL ILLINOIS

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

ILZ028>032-037-038-041>044-048-051>054-059>061-211200-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
DECATUR        CLOUDY    79  73  82 W7        29.77R HX  82  TC  26
PEORIA         NOT AVBL
SPRINGFIELD    CLOUDY    76  73  91 VRB3      29.78R TC  24
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-211200-
EAST-CENTRAL ILLINOIS

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

ILZ079-100>102-211200-
SOUTHWEST ILLINOIS

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

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-211200-
SOUTH-CENTRAL ILLINOIS

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

ILZ067-068-072-073-078-083-087-091-211200-
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
$$