Regional Weather Roundup
Issued by NWS

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415
ASUS43 KLOT 190601
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 AM CDT WED AUG 19 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.

ILZ001-002-007-009-015-016-024-190700-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         PTCLDY    71  68  90 SW3       29.92R TC  22
6HR MIN TEMP:  70; 6HR MAX TEMP:  80;

STERLING*      CLEAR     69  69 100 CALM      29.94R TC  21
SAVANNA*       PTCLDY    65  65  97 CALM      29.94R TC  19
$$

ILZ003-004-008-010-011-017-018-190700-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       MOCLDY    63  62  97 S6        29.94R TC  17
6HR MIN TEMP:  63; 6HR MAX TEMP:  76; 6HR PCP: TRACE;

FREEPORT*      PTCLDY    63  61  94 S3        29.95R TC  17
$$

ILZ005-006-012>014-019>023-190700-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    67  65  93 SW5       29.90F TC  19
6HR MIN TEMP:  67; 6HR MAX TEMP:  76; 6HR PCP:  0.13;

CHICAGO-MIDWAY PTCLDY    68  66  93 SW6       29.91S TC  20
6HR MIN TEMP:  68; 6HR MAX TEMP:  77;

AURORA         FOG       66  66 100 CALM      29.93R VSB 3/4 TC  19
6HR MIN TEMP:  65; 6HR MAX TEMP:  76; 6HR PCP:  0.26;

JOLIET*        PTCLDY    70  70 100 CALM      29.93R FOG     TC  21
WAUKEGAN       CLEAR     63  63 100 W6        29.89F TC  17
6HR MIN TEMP:  63; 6HR MAX TEMP:  73; 6HR PCP:  1.19;

DUPAGE AIRPORT PTCLDY    65  65 100 SW3       29.92S TC  18
6HR MIN TEMP:  65; 6HR MAX TEMP:  75; 6HR PCP:  0.01;

WHEELING       PTCLDY    67  65  93 W3        29.91F TC  19
6HR MIN TEMP:  66; 6HR MAX TEMP:  76; 6HR PCP:  0.17;

LANSING*       PTCLDY    67  67 100 CALM      29.93S TC  20
NORTHERLY ISL*   N/A     70  64  81 SW6         N/A  TC  21
$$

LMZ740>746-190700-
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            67 74                N/A           0
WAUKEGAN HARBOR            67 74                N/A           0
WILMETTE BUOY              70     250/  6/  8 1015.1F         1/ 3
CHICAGO BUOY               72 73              1011.4F         1/ 3
NORTHERLY ISL              69     240/  5/  8   N/A
CALUMET HARBOR             68     240/  2/  3 1012.9F
MICH CITY BUOY             69 74  200/  6/ 10   N/A           1/ 2
ST. JOSEPH BUOY            69 74  250/  4/  6 1013.7R         1/ 3
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-190700-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOCLDY    73  69  87 SE5       29.95F TC  23
MACOMB*        MOCLDY    68  68 100 W5        29.99R TC  20
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-190700-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    CLEAR     69  69 100 SW7       29.98R TC  21
DECATUR        PTCLDY    70  67  90 MISG      29.98R TC  21
PEORIA         CLEAR     71  69  93 CALM      29.96R TC  22
6HR MIN TEMP:  70; 6HR MAX TEMP:  79;

SPRINGFIELD    PTCLDY    68  67  96 CALM      29.97R TC  20
6HR MIN TEMP:  68; 6HR MAX TEMP:  80;

TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-190700-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      CLEAR     66  66 100 W3        29.98R TC  19
MATTOON        PTCLDY    72  67  84 S6        29.97R TC  22
$$

ILZ079-100>102-190700-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BELLEVILLE     CLEAR     74  73  97 SW3       29.94R TC  24
CAHOKIA*       CLEAR     73  70  90 CALM      29.96R TC  23
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190700-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
MARION         CLEAR     72  68  86 CALM      29.99R TC  22
MT. VERNON     CLEAR     70  68  93 CALM      29.99R TC  21
CENTRALIA*     CLEAR     72  69  91 CALM      29.98R TC  22
SALEM*           N/A     72  68  89 MISG      29.98R TC  22
$$

ILZ067-068-072-073-078-083-087-091-190700-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLEAR     69  67  93 CALM      29.97S TC  21
FAIRFIELD*     CLEAR     71  65  83 S3        29.98R TC  22
HARRISBURG*    CLEAR     68  67  96 CALM      29.99R TC  20
$$

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