Regional Weather Roundup
Issued by NWS

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241
ASUS43 KLOT 170256
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 PM CDT SUN AUG 16 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.

ILZ001-002-007-009-015-016-024-170400-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLEAR     73  66  78 NW3       30.00R TC  23
$$

ILZ003-004-008-010-011-017-018-170400-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       PTCLDY    71  63  75 NW10      30.00S TC  22
$$

ILZ005-006-012>014-019>023-170400-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  MOCLDY    77  66  68 NW12      29.95R TC  25
CHICAGO-MIDWAY NOT AVBL
AURORA         PTCLDY    72  68  87 N10       29.96S TC  22
WAUKEGAN       CLOUDY    73  63  70 N8G18     29.97R TC  23
DUPAGE AIRPORT MOCLDY    75  67  76 NW8       29.96R TC  24
WHEELING       CLOUDY    76  65  68 N10G21    29.97R TC  24
NORTHERLY ISL*   N/A     78  67  68 N14         N/A  HX  80  TC  26
$$

LMZ740>746-170400-
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            76 75  320/ 14/ 19 1014.5R         1/ 3
WAUKEGAN HARBOR            76 75  300/ 14/ 19 1015.4R         1/ 2
WILMETTE BUOY              76      40/  8/ 12 1017.8R         1/ 2
CHICAGO BUOY               78 74              1013.1R         1
HARRISON CRIB              80     350/ 17/ 20   N/A
NORTHERLY ISL              81     280/  5/  8   N/A
CALUMET HARBOR                    220/  2/  4 1014.0
MICHIGAN CITY              79     210/  5/  6 1011.6F
MICH CITY BUOY             76 74  360/ 14/ 17   N/A           0
ST. JOSEPH BUOY            75 74  270/ 10/ 14 1014.5R         0
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-170400-
WEST-CENTRAL ILLINOIS

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

ILZ028>032-037-038-041>044-048-051>054-059>061-170400-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PEORIA         NOT AVBL
SPRINGFIELD    CLOUDY    75  74  96 CALM      29.99R TC  24
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-170400-
EAST-CENTRAL ILLINOIS

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

ILZ079-100>102-170400-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          TSTM      75  73  94 VRB3      30.01R TC  24
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-170400-
SOUTH-CENTRAL ILLINOIS

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

ILZ067-068-072-073-078-083-087-091-170400-
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
$$