Gilmore Lake, IL Weather Forecast & Current Conditions

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Gilmore Lake, IL Weather Maps

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Gilmore Lake Weather Map
UTC Time: 10/9/2026, 10:05
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Gilmore Lake, IL Regional Weather

Expires:202610091100;;788260
ASUS43 KLOT 091001
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT FRI OCT 09 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.


ILZ079-100>102-091100-
SOUTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CAHOKIA*       CLEAR     51  47  86 CALM      30.09R TC  11           
SPARTA*        CLEAR     55  45  69 SE3       30.11S TC  13           
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Gilmore Lake, IL

Tonight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
78°/ 55° 26°/ 13°
20%
Sun-Sun Night
Clear
82°28°
0%
Columbus Day And Mon Night
Clear
92°33°
0%
Tuesday
Thunderstorms
90°/ 62° 32°/ 17°
20%
Wednesday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Alton, IL

Tonight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
82°/ 58° 28°/ 14°
20%
Sun-Sun Night
Clear
82°28°
0%
Columbus Day And Mon Night
Clear
92°33°
0%
Tuesday
Thunderstorms
88°/ 62° 31°/ 17°
20%
Wednesday
Rain Showers
85°/ 65° 29°/ 18°
50%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Patchy fog. Lows in the lower 50s. Southeast winds around 5 mph.

Alton, MO

Tonight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
82°/ 58° 28°/ 14°
20%
Sun-Sun Night
Clear
82°28°
0%
Columbus Day And Mon Night
Clear
92°33°
0%
Tuesday
Thunderstorms
88°/ 62° 31°/ 17°
20%
Wednesday
Rain Showers
85°/ 65° 29°/ 18°
50%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Patchy fog. Lows in the lower 50s. Southeast winds around 5 mph.

Jefferson County, MO

Tonight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
78°/ 55° 26°/ 13°
20%
Sun-Sun Night
Clear
82°28°
0%
Columbus Day And Mon Night
Clear
92°33°
0%
Tuesday
Thunderstorms
90°/ 62° 32°/ 17°
20%
Wednesday
Thunderstorms
85°/ 62° 29°/ 17°
50%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Chester, IL

Tonight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
50%
Sunday
Sunny
82°/ 58° 28°/ 14°
0%
Mon Night
Clear
65°18°
0%
Tue Night
Clear
65°18°
0%
Wednesday
Rain Showers
85°/ 62° 29°/ 17°
40%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Lows in the lower 50s. South winds around 5 mph.

Centralia, IL

Tonight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Cloudy
78°/ 58° 26°/ 14°
50%
Sunday
Sunny
78°/ 58° 26°/ 14°
0%
Mon Night-Tue
Clear
65°18°
0%
Tue Night
Clear
62°17°
0%
Wednesday
Rain Showers
82°/ 62° 28°/ 17°
40%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Patchy fog. Near steady temperature in the lower 50s. Southeast winds around 5 mph.

Washington, MO

Tonight
Clear
58°14°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
80°/ 55° 27°/ 13°
0%
Sun-Sun Night
Clear
85°29°
0%
Columbus Day Through Tue
Clear
92°/ 62° 33°/ 17°
20%
Wed-Wed Night
Thunderstorms
85°29°
50%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Near steady temperature in the upper 50s. South winds around 5 mph.

Farmington, MO

Tonight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun-Sun Night
Clear
85°29°
0%
Columbus Day Through Tue Night
Clear
90°32°
0%
Wednesday
Rain Showers
85°/ 62° 29°/ 17°
40%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Pinckneyville, IL

Overnight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
70%
Sunday
Partly Cloudy
80°/ 55° 27°/ 13°
0%
Mon Night
Clear
62°17°
0%
Tue Night
Clear
62°17°
0%
Wednesday
Rain Showers
85°/ 62° 29°/ 17°
30%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Lows in the lower 50s. Southeast winds around 5 mph.

Greene County, IL

Tonight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
82°/ 55° 28°/ 13°
0%
Sun-Sun Night
Clear
82°28°
0%
Columbus Day And Mon Night
Clear
92°33°
0%
Tuesday
Thunderstorms
88°/ 60° 31°/ 16°
20%
Wednesday
Rain Showers
82°/ 62° 28°/ 17°
50%

Night: Clear. Patchy fog. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Litchfield, IL

Tonight
Clear
52°11°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Mostly Cloudy
78°/ 58° 26°/ 14°
50%
Sunday
Sunny
78°/ 55° 26°/ 13°
0%
Mon Night
Clear
65°18°
0%
Tuesday
Thunderstorms
88°/ 60° 31°/ 16°
20%
Wednesday
Rain Showers
82°/ 60° 28°/ 16°
40%
Thursday
Thunderstorms
82°28°
50%

Night: Clear. Patchy fog. Near steady temperature in the lower 50s. Southeast winds around 5 mph.

Perryville, MO

Overnight
Clear
55°13°
0%
Friday
Sunny
85°/ 58° 29°/ 14°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sunday
Partly Cloudy
80°/ 58° 27°/ 14°
0%
Mon Night
Clear
65°18°
0%
Tue Night
Clear
65°18°
0%
Wed-Wed Night
Cloudy
85°29°
0%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Lows in the mid 50s. South winds around 5 mph.

Carbondale, IL

Overnight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
75°/ 58° 24°/ 14°
70%
Sunday
Partly Cloudy
78°/ 58° 26°/ 14°
0%
Mon Night
Clear
65°18°
0%
Tue Night
Clear
65°18°
0%
Wed-Wed Night
Cloudy
82°28°
0%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Mount Vernon, IL

Overnight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
78°/ 58° 26°/ 14°
70%
Sunday
Mostly Cloudy
78°/ 55° 26°/ 13°
0%
Mon Night
Clear
62°17°
0%
Tue Night
Clear
62°17°
0%
Wednesday
Rain Showers
82°/ 62° 28°/ 17°
30%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Near steady temperature in the mid 50s. Calm winds.

Cape Girardeau, MO

Overnight
Clear
55°13°
0%
Friday
Sunny
85°/ 58° 29°/ 14°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
70%
Sunday
Partly Cloudy
78°/ 58° 26°/ 14°
0%
Mon Night
Clear
62°17°
0%
Tue Night
Clear
62°17°
0%
Wed-Wed Night
Cloudy
82°28°
0%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Near steady temperature in the mid 50s. Calm winds.

Marble Hill, MO

Overnight
Clear
55°13°
0%
Friday
Sunny
85°/ 58° 29°/ 14°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
50%
Sunday
Sunny
82°/ 58° 28°/ 14°
0%
Mon Night
Clear
62°17°
0%
Tue-Tue Night
Clear
88°31°
0%
Wed-Wed Night
Cloudy
82°28°
0%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Near steady temperature in the mid 50s. Calm winds.

West Frankfort, IL

Overnight
Clear
55°13°
0%
Friday
Sunny
88°/ 58° 31°/ 14°
0%
Saturday
Rain Showers
75°/ 58° 24°/ 14°
70%
Sunday
Mostly Cloudy
78°/ 58° 26°/ 14°
0%
Mon Night
Clear
62°17°
0%
Tue Night
Clear
62°17°
0%
Wed-Wed Night
Cloudy
85°29°
0%
Thursday
Rain Showers
82°28°
40%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Herrin, IL

Overnight
Clear
55°13°
0%
Friday
Sunny
88°/ 60° 31°/ 16°
0%
Saturday
Rain Showers
75°/ 58° 24°/ 14°
90%
Sunday
Mostly Cloudy
78°/ 58° 26°/ 14°
0%
Mon Night
Clear
65°18°
0%
Tue Night
Clear
65°18°
0%
Wed-Wed Night
Cloudy
82°28°
0%
Thursday
Rain Showers
82°28°
30%

Night: Clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.

Jonesboro, IL

Overnight
Clear
55°13°
0%
Friday
Sunny
85°/ 60° 29°/ 16°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
80%
Sunday
Mostly Cloudy
78°/ 58° 26°/ 14°
0%
Mon Night
Clear
65°18°
0%
Tuesday
Clear
65°18°
0%
Wednesday
Clear
65°/ 62° 18°/ 17°
0%
Thursday
Rain Showers
82°28°
30%

Night: Clear. Lows in the mid 50s. Southeast winds around 5 mph.

Quincy, IL

Tonight
Clear
58°14°
0%
Friday
Sunny
88°/ 62° 31°/ 17°
0%
Saturday
Mostly Cloudy
82°/ 55° 28°/ 13°
0%
Sunday
Sunny
82°/ 62° 28°/ 17°
0%
Columbus Day And Mon Night
Clear
88°31°
0%
Tuesday
Thunderstorms
82°/ 62° 28°/ 17°
40%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
70%
Thursday
Thunderstorms
75°24°
50%

Night: Mostly clear. Near steady temperature in the upper 50s. Southeast winds around 5 mph.

Names listed above may include county names.

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