Regional Weather Roundup
Issued by NWS

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045
ASUS43 KLOT 200656
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 AM CDT THU AUG 20 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.

ILZ001-002-007-009-015-016-024-200800-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         PTCLDY    70  67  90 NE6       29.95S TC  21
$$

ILZ003-004-008-010-011-017-018-200800-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTCLDY    64  58  80 N3        30.00F TC  18
$$

ILZ005-006-012>014-019>023-200800-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  MOCLDY    68  56  65 N8        29.95F TC  20
CHICAGO-MIDWAY NOT AVBL
AURORA         MOCLDY    65  60  84 NE6       29.97S TC  18
WAUKEGAN       MOCLDY    60  59  96 N5        29.97F TC  16
DUPAGE AIRPORT MOCLDY    63  59  87 N7        29.96F TC  17
WHEELING       MOCLDY    64  58  80 N6        29.98F TC  18
NORTHERLY ISL*   N/A     71  55  56 NE14        N/A  TC  22
$$

LMZ740>746-200800-
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            73 74   20/  6/ 10 1014.9F         2/ 4
WAUKEGAN HARBOR            73 74  350/ 10/ 12 1015.7F         2/ 3
WILMETTE BUOY              73      80/ 14/ 17 1017.8F         2/ 4
CHICAGO BUOY               74 73              1013.4F         3/ 4
NORTHERLY ISL              71      20/  9/ 13   N/A
CALUMET HARBOR                     20/ 10/ 14 1014.9
MICH CITY BUOY             72 74   40/ 14/ 17   N/A           3/ 4
ST. JOSEPH BUOY            72 74   40/ 10/ 14 1015.4F         2/ 4
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-200800-
WEST-CENTRAL ILLINOIS

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

ILZ028>032-037-038-041>044-048-051>054-059>061-200800-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    LGT RAIN  68  67  96 SW3       29.94S TC  20
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-200800-
EAST-CENTRAL ILLINOIS

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

ILZ079-100>102-200800-
SOUTHWEST ILLINOIS

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

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-200800-
SOUTH-CENTRAL ILLINOIS

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

ILZ067-068-072-073-078-083-087-091-200800-
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
$$