Regional Weather Roundup
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
063
ASUS43 KLOT 210610
RWRIL

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 AM CDT MON SEP 21 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.

ILZ001-002-007-009-015-016-024-210700-
NORTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MOLINE         CLOUDY    60  58  92 NE9       30.06F TC  16
6HR MIN TEMP:  60; 6HR MAX TEMP:  63;

STERLING*      CLOUDY    61  60  97 NE10      30.09S TC  16
SAVANNA*       CLOUDY    60  55  85 NE10      30.10F TC  16
$$

ILZ003-004-008-010-011-017-018-210700-
NORTH CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ROCKFORD       DRIZZLE   61  59  93 VRB7      30.12F TC  16
6HR MIN TEMP:  60; 6HR MAX TEMP:  61; 6HR PCP:  0.01;

FREEPORT*      CLOUDY    58  57  95 NE8       30.14S TC  15
ROCHELLE*      CLOUDY    61  61 100 NE6       30.10S TC  16
DE KALB*       CLOUDY    61  60  97 E10G16    30.10F TC  16
PERU*          CLOUDY    63  57  82 E16G24    30.06S TC  17
$$

ILZ005-006-012>014-019>023-210700-
NORTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHICAGO-OHARE  CLOUDY    63  53  70 E16G24    30.09F TC  17
6HR MIN TEMP:  61; 6HR MAX TEMP:  63; 6HR PCP:  0.04;

CHICAGO-MIDWAY DRIZZLE   61  57  87 E15       30.10R TC  16
6HR MIN TEMP:  61; 6HR MAX TEMP:  63; 6HR PCP:  0.04;

AURORA         CLOUDY    62  59  90 E12       30.08F TC  17
6HR MIN TEMP:  61; 6HR MAX TEMP:  63;

JOLIET*        CLOUDY    63  61  96 NE13G18   30.08F TC  17
WAUKEGAN       CLOUDY    62  56  80 E18G28    30.12S TC  17
6HR MIN TEMP:  61; 6HR MAX TEMP:  64; 6HR PCP:  0.05;

DUPAGE AIRPORT CLOUDY    62  59  90 E8        30.10S TC  17
6HR MIN TEMP:  61; 6HR MAX TEMP:  62; 6HR PCP: TRACE;

KANKAKEE*      CLOUDY    60  59  95 E7        30.07R TC  16
WHEELING       MOCLDY    63  57  81 E13G20    30.12F TC  17
6HR MIN TEMP:  62; 6HR MAX TEMP:  64; 6HR PCP:  0.04;

ROMEOVILLE*    CLOUDY    61  61 100 NE16      30.09S TC  16
LANSING*       CLOUDY    60  59  96 NE8       30.09F TC  16
NORTHERLY ISL*   N/A     62  56  80 NE22        N/A  TC  17
$$

LMZ740>746-210700-
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            64 64   70/ 19/ 25 1014.2          6/ 5
WAUKEGAN HARBOR            63 65   40/ 19/ 25 1019.7          5/ 5
WILMETTE BUOY              64     110/ 19/ 25 1021.5R         6/ 7
CHICAGO BUOY               64 65              1018.2          5/ 5
NORTHERLY ISL              63      60/ 16/ 19   N/A
CALUMET HARBOR             62      30/ 12/ 17 1019.1
MICH CITY BUOY             60 58   50/ 14/ 17   N/A           4/ 7
ST. JOSEPH BUOY            59 57   50/ 10/ 14 1019.9R         3/ 6
$$

ILZ025>027-034>036-040-047-049-050-058-095>099-210700-
WEST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         CLOUDY    66  62  87 NE13      29.99F TC  19
GALESBURG*     CLOUDY    62  60  94 NE13      30.05S TC  17
MACOMB*        CLOUDY    64  63  97 NE12      30.04F TC  18
JACKSONVILLE*  CLOUDY    65  65 100 NE10      29.99S TC  19
PITTSFIELD*    CLOUDY    68  65  92 NE10      30.00S TC  20
$$

ILZ028>032-037-038-041>044-048-051>054-059>061-210700-
CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        CLOUDY    61  61  99 NE13G21   30.04F TC  16
BLOOMINGTON    CLOUDY    62  62 100 NE17      30.03R TC  17
DECATUR        CLOUDY    67  66  97 NE15      29.97F TC  19
PEORIA         CLOUDY    63  61  93 NE10      30.03S TC  17
6HR MIN TEMP:  63; 6HR MAX TEMP:  67; 6HR PCP: TRACE;

LACON*         CLOUDY    62  58  87 E9G16     30.05R TC  17
LINCOLN*       CLOUDY    66  66 100 NE12      30.00S TC  19
SPRINGFIELD    CLOUDY    66  63  90 NE9       29.98F TC  19
6HR MIN TEMP:  66; 6HR MAX TEMP:  74;

TAYLORVILLE    NOT AVBL
$$

ILZ033-039-045-046-055>057-062-063-210700-
EAST-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CHAMPAIGN      RAIN      65  64  97 NE14      29.98F FOG     TC  18
RANTOUL*       CLOUDY    64  63  98 NE12G17   30.01S TC  18
MATTOON        CLOUDY    70  68  93 NE12      29.95S TC  21
PARIS*         RAIN      67  67  98 NE12      29.97S TC  20
$$

ILZ079-100>102-210700-
SOUTHWEST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          TSTM      70  69  95 NW5       29.98F TC  21
BELLEVILLE     TSTM      72  71  97 NE3       29.94F TC  22
CAHOKIA*       TSTM      71  69  93 N3        29.95F TC  22
SPARTA*        MOCLDY    75  69  80 NW12      29.96S TC  24
$$

ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210700-
SOUTH-CENTRAL ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     NOT AVBL
CAIRO*         MOCLDY    73  72  95 CALM      29.89S TC  23
EFFINGHAM*     HVY RAIN  69  68  94 N7        29.96S TC  21
MARION         MOCLDY    77  64  65 N8        29.88S TC  25
MT. VERNON     MOCLDY    74  69  85 NE9       29.92S TC  23
CENTRALIA*     CLOUDY    74  69  85 N13       29.95R TC  23
SALEM*         CLOUDY    73  70  91 MISG      29.98R TC  23
METROPOLIS*    PTCLDY    71  71  98 CALM      29.89S TC  22
$$

ILZ067-068-072-073-078-083-087-091-210700-
SOUTHEAST ILLINOIS

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  PTCLDY    73  70  90 N7        29.92R TC  23
FLORA*         FOG       72  68  88 NE8       29.93F VSB 1/4 TC  22
FAIRFIELD*     MOCLDY    73  68  85 N8        29.91F TC  23
HARRISBURG*    MOCLDY    78  68  72 N5        29.89S TC  25
ROBINSON*      LGT RAIN  72  72 100 N9        29.94R TC  22
$$

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