Regional Weather Roundup
Issued by NWS

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651
ASUS43 KLOT 131807
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 PM CDT SUN SEP 13 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.

ILZ001-002-007-009-015-016-024-131900-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         LGT RAIN  65  49  56 N14G20    30.16F TC  18
6HR MIN TEMP:  56; 6HR MAX TEMP:  71; 6HR PCP: TRACE;

STERLING*      CLOUDY    64  52  64 N12       30.17F TC  18
SAVANNA*       LGT RAIN  58  53  81 N5        30.20R TC  15
$$

ILZ003-004-008-010-011-017-018-131900-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       RAIN      60  52  74 N10       30.19R TC  16
6HR MIN TEMP:  56; 6HR MAX TEMP:  69; 6HR PCP:  0.02;

FREEPORT*      CLOUDY    59  57  94 NW5       30.20F TC  15
ROCHELLE*      LGT RAIN  65  48  54 NW7       30.19R TC  18
DE KALB*       CLOUDY    66  50  57 N8        30.18R TC  19
$$

ILZ005-006-012>014-019>023-131900-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  PTSUNNY   72  48  42 NW10      30.11S TC  22
6HR MIN TEMP:  61; 6HR MAX TEMP:  75;

CHICAGO-MIDWAY PTSUNNY   73  51  46 N12       30.12R TC  23
6HR MIN TEMP:  64; 6HR MAX TEMP:  74;

AURORA         CLOUDY    71  52  50 N12G20    30.14S TC  22
6HR MIN TEMP:  54; 6HR MAX TEMP:  73;

JOLIET*        CLOUDY    76  49  38 N8        30.13R TC  25
WAUKEGAN       PTSUNNY   66  49  54 N7G17     30.12S TC  19
6HR MIN TEMP:  58; 6HR MAX TEMP:  70;

DUPAGE AIRPORT PTSUNNY   71  50  47 NW12      30.13S TC  22
6HR MIN TEMP:  57; 6HR MAX TEMP:  73;

KANKAKEE*      PTSUNNY   77  48  35 N14G20    30.11R TC  25
WHEELING       MOSUNNY   71  51  49 N9        30.14R TC  22
6HR MIN TEMP:  60; 6HR MAX TEMP:  72;

LANSING*       PTSUNNY   71  56  57 N9G17     30.12R TC  22
NORTHERLY ISL*   N/A     70  53  54 N13         N/A  TC  21
$$

LMZ740>746-131900-
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            66 70  310/  8/ 12 1018.8S         3/ 6
WAUKEGAN HARBOR            66 67  330/  8/ 14 1019.6F         2/ 6
WILMETTE BUOY              66      50/ 14/ 17 1022.7R         3/ 5
CHICAGO BUOY               67 70              1018.9R         3/ 5
HARRISON CRIB              66     350/ 19/ 21   N/A
NORTHERLY ISL              70     340/  9/ 13   N/A
CALUMET HARBOR             68     320/ 12/ 18 1020.3
MICHIGAN CITY              70     340/ 16/ 17 1017.5
MICH CITY BUOY             69 69  340/ 16/ 19   N/A           3/ 5
ST. JOSEPH BUOY            68 67  350/ 14/ 17 1019.8R         4/ 5
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-131900-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOSUNNY   77  53  43 N15       30.11F TC  25
GALESBURG*     PTSUNNY   70  53  56 N15       30.17F TC  21
MACOMB*        MOSUNNY   75  55  48 N13       30.15F TC  24
JACKSONVILLE*  SUNNY     79  57  47 N14       30.11S HX  80  TC  26
PITTSFIELD*    SUNNY     80  56  44 N13G18    30.12S HX  80  TC  27
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-131900-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        PTSUNNY   76  52  44 N13G18    30.14R TC  24
BLOOMINGTON    SUNNY     78  54  43 N15G24    30.13R TC  26
DECATUR        MOSUNNY   81  60  48 N13G22    30.08R HX  82  TC  27
PEORIA         PTSUNNY   74  52  46 N12G21    30.15R TC  23
6HR MIN TEMP:  62; 6HR MAX TEMP:  76;

LACON*         CLOUDY    73  49  43 N13       30.16R TC  23
SPRINGFIELD    MOSUNNY   82  57  42 N12G20    30.10R HX  82  TC  28
6HR MIN TEMP:  64; 6HR MAX TEMP:  82;

TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-131900-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      MOSUNNY   81  61  50 N14G21    30.08R HX  82  TC  27
RANTOUL*       SUNNY     80  56  43 NW15      30.08S HX  80  TC  27
MATTOON        PTSUNNY   84  63  49 NW9       30.04S HX  85  TC  29
PARIS*         PTSUNNY   83  65  54 NW9       30.05R HX  84  TC  28
$$

ILZ079-100>102-131900-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          SUNNY     84  66  54 NW10      30.07F HX  86  TC  29
CAHOKIA*       PTSUNNY   84  68  58 NW8       30.06S HX  87  TC  29
SPARTA*        PTSUNNY   85  68  57 NW7       30.06S HX  88  TC  30
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-131900-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     MOSUNNY   88  72  58 N5        30.03F HX  94  TC  31
CAIRO*         MOSUNNY   93  74  53 CALM      30.01F HX 103  TC  34
EFFINGHAM*     PTSUNNY   83  65  53 W7        30.06S HX  85  TC  28
MT. VERNON     MOSUNNY   85  70  60 CALM      30.04F HX  89  TC  29
CENTRALIA*     PTSUNNY   85  67  56 N8        30.05S HX  87  TC  29
SALEM*         PTSUNNY   86  70  58 MISG      30.04F HX  90  TC  30
METROPOLIS*    SUNNY     91  66  43 W5        30.01F HX  93  TC  33
$$

ILZ067-068-072-073-078-083-087-091-131900-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  MOSUNNY   87  68  52 W9        30.00F HX  90  TC  31
FLORA*         PTSUNNY   86  68  54 W8        30.03F HX  89  TC  30
FAIRFIELD*     MOSUNNY   88  66  48 SW7       30.01F HX  90  TC  31
HARRISBURG*    SUNNY     89  71  56 N3        30.02F HX  94  TC  31
ROBINSON*      MOSUNNY   86  70  58 N10       30.00F HX  90  TC  30
$$

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