Regional Weather Roundup
Issued by NWS

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920
ASUS43 KLOT 160608
RWRIL

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

ILZ001-002-007-009-015-016-024-160700-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         LGT RAIN  67  64  90 CALM      30.20R TC  19
6HR MIN TEMP:  67; 6HR MAX TEMP:  73; 6HR PCP:  0.04;

STERLING*      CLOUDY    67  65  93 N6        30.21S TC  19
SAVANNA*       MOCLDY    64  61  88 N5        30.21S TC  18
$$

ILZ003-004-008-010-011-017-018-160700-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       CLOUDY    67  61  81 N6        30.23R TC  19
6HR MIN TEMP:  66; 6HR MAX TEMP:  71; 6HR PCP: TRACE;

FREEPORT*      CLOUDY    64  62  95 N5        30.24S TC  18
ROCHELLE*      MOCLDY    66  66  99 N6        30.21S TC  19
DE KALB*       MOCLDY    66  66 100 NE5       30.21F TC  19
$$

ILZ005-006-012>014-019>023-160700-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    71  66  84 N9        30.19R TC  22
6HR MIN TEMP:  71; 6HR MAX TEMP:  79; 6HR PCP: TRACE;

CHICAGO-MIDWAY CLOUDY    73  67  81 NE7       30.19R TC  23
6HR MIN TEMP:  73; 6HR MAX TEMP:  79;

AURORA         CLOUDY    70  67  90 NE3       30.20R TC  21
6HR MIN TEMP:  68; 6HR MAX TEMP:  76; 6HR PCP: TRACE;

JOLIET*        CLOUDY    73  72  98 CALM      30.19S TC  23
WAUKEGAN       MOCLDY    67  65  93 NE6       30.20S TC  19
6HR MIN TEMP:  67; 6HR MAX TEMP:  72;

DUPAGE AIRPORT MOCLDY    69  66  90 N7        30.19S TC  21
6HR MIN TEMP:  69; 6HR MAX TEMP:  78;

KANKAKEE*      CLOUDY    72  70  95 CALM      30.20R TC  22
WHEELING       CLOUDY    70  67  90 NE6       30.21R TC  21
6HR MIN TEMP:  70; 6HR MAX TEMP:  79; 6HR PCP:  0.06;

ROMEOVILLE*    CLOUDY    73  72  94 CALM      30.21R TC  23
LANSING*       CLOUDY    73  67  81 NE3       30.20R TC  23
NORTHERLY ISL*   N/A     70  67  90 N3          N/A  TC  21
$$

LMZ740>746-160700-
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            65 59  330/  6/  8 1019.8R         0
WAUKEGAN HARBOR            66 62   10/  8/ 10 1022.0R         0
WILMETTE BUOY              65     330/  6/  6 1024.2R         0
CHICAGO BUOY               68 66              1021.3R         0
NORTHERLY ISL              69     360/  4/  5   N/A
CALUMET HARBOR             71     350/  4/  5 1021.9
MICH CITY BUOY             68 65   20/  4/  6   N/A           0
ST. JOSEPH BUOY            67 63   20/  4/  6 1022.9R         0
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-160700-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         LGT RAIN  70  68  93 NE21G29   30.12F TC  21
GALESBURG*     RAIN      66  66 100 CALM      30.23R TC  19
MACOMB*        RAIN      68  68 100 N12       30.20F TC  20
JACKSONVILLE*  CLOUDY    74  74 100 NE6       30.13R THUNDER TC  24
PITTSFIELD*    CLOUDY    73  73  98 CALM      30.16R TC  23
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-160700-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        CLOUDY    72  72 100 NE3       30.20R TC  22
BLOOMINGTON    TSTM      71  71 100 NE8       30.19F TC  22
DECATUR        MOCLDY    75  71  87 NE8       30.15F TC  24
PEORIA         CLOUDY    72  71  97 NE9       30.16R TC  22
6HR MIN TEMP:  70; 6HR MAX TEMP:  84; 6HR PCP:  0.07;

LACON*         LGT RAIN  71  68  92 CALM      30.18S TC  22
LINCOLN*       CLOUDY    74  74 100 NE13      30.14F TC  23
SPRINGFIELD    CLOUDY    75  72  90 NE9       30.12F TC  24
6HR MIN TEMP:  74; 6HR MAX TEMP:  78;

TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-160700-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      MOCLDY    73  71  93 N6        30.18R TC  23
RANTOUL*       CLOUDY    74  72  91 NW10      30.19R TC  24
MATTOON        PTCLDY    79  70  74 S7        30.14R HX  82  TC  26
PARIS*         PTCLDY    73  71  93 NE3       30.16R TC  23
$$

ILZ079-100>102-160700-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          PTCLDY    82  72  71 S5        30.12R HX  86  TC  28
CAHOKIA*       PTCLDY    78  73  84 S5        30.10S HX  81  TC  26
SPARTA*        CLEAR     81  71  71 S7        30.14R HX  85  TC  27
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-160700-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
CAIRO*         CLEAR     75  73  93 CALM      30.16R TC  24
EFFINGHAM*     CLEAR     78  69  74 SE5       30.15S HX  80  TC  26
MARION         CLEAR     79  68  69 VRB2      30.15R HX  81  TC  26
MT. VERNON     CLEAR     74  70  87 CALM      30.14S TC  23
CENTRALIA*     CLEAR     80  69  70 S5        30.14S HX  83  TC  27
SALEM*         CLEAR     82  71  69 MISG      30.13F HX  86  TC  28
METROPOLIS*    CLEAR     73  72  98 CALM      30.17R TC  23
$$

ILZ067-068-072-073-078-083-087-091-160700-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLEAR     77  72  84 S5        30.15R TC  25
FLORA*         CLEAR     75  70  83 S5        30.14S TC  24
FAIRFIELD*     CLEAR     76  70  81 CALM      30.14S TC  25
HARRISBURG*    CLEAR     73  72  96 CALM      30.15S TC  23
ROBINSON*      CLEAR     75  72  88 S6        30.14S TC  24
$$

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