Regional Weather Roundup
Issued by NWS

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138
ASUS43 KLOT 150703
RWRIL

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

ILZ001-002-007-009-015-016-024-150800-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLOUDY    73  72  96 E9        30.05F TC  23
STERLING*      CLOUDY    72  72 100 E7        30.09S TC  22
SAVANNA*       CLOUDY    72  68  89 E9        30.07F TC  22
$$

ILZ003-004-008-010-011-017-018-150800-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       CLOUDY    70  65  84 E5        30.12R TC  21
FREEPORT*      CLOUDY    70  68  95 E3        30.13S TC  21
$$

ILZ005-006-012>014-019>023-150800-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  MOCLDY    73  68  84 E7        30.08F TC  23
CHICAGO-MIDWAY CLOUDY    74  69  85 E3        30.10R TC  23
AURORA         LGT RAIN  72  69  90 E6        30.09F TC  22
JOLIET*        MOCLDY    73  73  97 E5        30.10F TC  23
WAUKEGAN       MOCLDY    73  68  84 E7        30.09F TC  23
DUPAGE AIRPORT CLOUDY    71  67  87 CALM      30.10F TC  22
WHEELING       CLOUDY    74  68  81 E5        30.10F TC  23
LANSING*         N/A    N/A N/A N/A MISG        N/A
NORTHERLY ISL*   N/A     73  70  90 E5          N/A  TC  23
$$

LMZ740>746-150800-
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            75 74   50/ 12/ 16 1017.6R         3/ 5
WAUKEGAN HARBOR            75 74   10/ 12/ 16 1019.5          2/ 5
WILMETTE BUOY              75     100/ 14/ 17 1021.8F         3/ 5
CHICAGO BUOY               75 73              1018.0F         2/ 4
HARRISON CRIB              75      70/ 10/ 11   N/A
NORTHERLY ISL              72      30/  6/  7   N/A
CALUMET HARBOR             73      50/  3/  5 1019.1
MICHIGAN CITY              73      80/  5/  6 1017.2F
MICH CITY BUOY             73 74   70/  8/ 12   N/A           1/ 4
ST. JOSEPH BUOY            74 75   90/  6/  6 1019.8F         1/ 4
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-150800-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOCLDY    77  75  93 E6        30.00S TC  25
MACOMB*        RAIN      73  73 100 E9        30.07F TC  23
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-150800-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    FOG       72  32  23 S6        30.13F THUNDER VSB 1/2
DECATUR        PTCLDY    74  72  93 SE7       30.07F TC  23
PEORIA         LGT RAIN  73  72  96 SE6       30.06F TC  23
LINCOLN*       CLOUDY    75  75 100 NE9       30.08R TC  24
SPRINGFIELD    MOCLDY    76  73  91 E10       30.04S TC  24
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-150800-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      PTCLDY    73  73 100 E8        30.09F TC  23
MATTOON        PTCLDY    75  71  87 SE8       30.06F TC  24
$$

ILZ079-100>102-150800-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CAHOKIA*       CLEAR     78  75  90 CALM      30.00S HX  81  TC  26
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-150800-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
MARION         CLEAR     78  77  98 S3        30.06F HX  80  TC  25
MT. VERNON     CLEAR     79  77  94 CALM      30.05F HX  83  TC  26
CENTRALIA*     CLEAR     78  77  97 CALM      30.05S HX  80  TC  26
SALEM*           N/A     79  78  96 MISG      30.05F HX  83  TC  26
$$

ILZ067-068-072-073-078-083-087-091-150800-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLEAR     77  72  84 SE5       30.07F TC  25
FAIRFIELD*     CLEAR     78  75  92 SE3       30.06F HX  80  TC  26
HARRISBURG*    CLEAR     75  75 100 CALM      30.06F FOG     TC  24
$$

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