Regional Weather Roundup
Issued by NWS

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385
ASUS43 KLOT 180810
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT SAT JUL 18 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.

ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         PTCLDY    78  72  81 W9        29.93S HX  80  TC  26
STERLING*      CLEAR     76  76 100 SW8       29.92F TC  24
$$

ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       MOCLDY    75  72  90 S5        29.90F TC  24
$$

ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTCLDY    80  72  76 SW8       29.88F HX  84  TC  27
CHICAGO-MIDWAY CLEAR     79  73  82 W10       29.88F HX  82  TC  26
AURORA         CLEAR     77  74  90 SW8       29.89F TC  25
WAUKEGAN       PTCLDY    78  73  84 W8        29.86F HX  81  TC  26
DUPAGE AIRPORT CLEAR     77  73  87 SW10      29.89F TC  25
WHEELING       CLEAR     80  73  79 SW6       29.88F HX  84  TC  27
NORTHERLY ISL*   N/A     81  70  69 SW8         N/A  HX  84  TC  27
$$

LMZ740>746-180900-
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            79 75              1011.4          1
WAUKEGAN HARBOR            80 76              1012.2          1
WILMETTE BUOY              80     230/ 10/ 14 1015.1F         1/ 2
CHICAGO BUOY               82 78  240/ 12/ 16 1010.7          1
HARRISON CRIB              83     250/ 15/ 18   N/A
NORTHERLY ISL              81     220/  7/  9   N/A
BURNS HARBOR                                  1012.9F
MICHIGAN CITY              78     190/ 10/ 12 1010.3F
MICH CITY BUOY             78 78  210/  8/ 12   N/A           1/ 3
ST. JOSEPH BUOY            79 78  230/ 12/ 16 1012.8F         2/ 3
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         CLEAR     76  71  85 W8        30.00F TC  24
JACKSONVILLE*  CLEAR     75  75 100 SW3       29.99S TC  24
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BLOOMINGTON    CLEAR     77  73  87 SW12      29.98F TC  25
DECATUR        CLEAR     78  72  81 W6        29.99S HX  80  TC  26
PEORIA         CLEAR     78  72  81 W7        29.96F HX  80  TC  26
SPRINGFIELD    CLEAR     74  72  93 SW5       29.99S TC  23
TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      CLEAR     74  73  97 SW5       29.98F TC  23
MATTOON        CLEAR     77  73  87 SW6       29.98F TC  25
$$

ILZ079-100>102-180900-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BELLEVILLE     CLEAR     77  76  96 SW7       29.99S TC  25
CAHOKIA*       CLEAR     77  74  90 SW3       30.01S TC  25
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
EFFINGHAM*     CLEAR     75  75 100 S6        30.01F TC  24
MT. VERNON     CLEAR     74  73  97 SW5       30.02S TC  23
METROPOLIS*    CLEAR     75  75 100 SW5       30.04S TC  24
$$

ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
FAIRFIELD*     CLEAR     75  73  94 SW3       30.01  TC  24
$$

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