Foster Lake, IL Weather Forecast & Current Conditions

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Foster Lake, IL Weather Maps

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Foster Lake Weather Map
UTC Time: 9/25/2026, 12:23
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Foster Lake, IL Regional Weather

Expires:202609251300;;031056
ASUS43 KLOT 251210
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
700 AM CDT FRI SEP 25 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.


ILZ025>027-034>036-040-047-049-050-058-095>099-251300-
WEST-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
QUINCY         MOCLDY    61  59  93 E5        30.26R TC  16           
GALESBURG*     CLOUDY    60  60 100 E3        30.30R TC  16           
MACOMB*        CLOUDY    60  60 100 E3        30.30R TC  16           
JACKSONVILLE*  PTCLDY    59  59 100 E3        30.27R TC  15           
PITTSFIELD*    PTCLDY    60  60  98 CALM      30.26S TC  16           
$$


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

Foster Lake, IL

Today
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
20%
Sunday
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Monday
Sunny
78°/ 58° 26°/ 14°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
60%
Wed Night-Thu
Rain Showers
62°17°
50%

Day: Mostly cloudy. Highs in the lower 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. East winds around 5 mph.

Greene County, IL

Today
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
20%
Sunday
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Monday
Sunny
78°/ 58° 26°/ 14°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
60%
Wed Night-Thu
Rain Showers
62°17°
50%

Day: Mostly cloudy. Highs in the lower 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. East winds around 5 mph.

Alton, IL

Today
Mostly Cloudy
75°/ 60° 24°/ 16°
0%
Saturday
Rain Showers
72°/ 60° 22°/ 16°
20%
Sunday
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Monday
Sunny
78°/ 62° 26°/ 17°
0%
Tuesday
Rain Showers
80°/ 65° 27°/ 18°
60%
Wed Night
Rain Showers
65°18°
50%
Thursday
Thunderstorms
80°27°
50%

Day: Patchy fog this morning. Mostly cloudy. Highs in the mid 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows around 60. Northeast winds around 5 mph.

Alton, MO

Today
Mostly Cloudy
75°/ 60° 24°/ 16°
0%
Saturday
Rain Showers
72°/ 60° 22°/ 16°
20%
Sunday
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Monday
Sunny
78°/ 62° 26°/ 17°
0%
Tuesday
Rain Showers
80°/ 65° 27°/ 18°
60%
Wed Night
Rain Showers
65°18°
50%
Thursday
Thunderstorms
80°27°
50%

Day: Patchy fog this morning. Mostly cloudy. Highs in the mid 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows around 60. Northeast winds around 5 mph.

Winchester, IL

Today
Sprinkles
72°/ 58° 22°/ 14°
0%
Saturday
Rain
68°/ 58° 20°/ 14°
40%
Sunday
Mostly Cloudy
72°22°
0%
Sun Night
Cloudy
58°14°
0%
Mon Night
Cloudy
58°14°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
60%
Wed Night
Rain Showers
62°17°
40%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy. A chance of sprinkles this afternoon. Highs in the lower 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. East winds around 5 mph.

Jacksonville, IL

Today
Sprinkles
72°/ 58° 22°/ 14°
0%
Saturday
Rain
70°/ 58° 21°/ 14°
40%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Sunny
75°/ 58° 24°/ 14°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
70%
Wed Night
Rain Showers
62°17°
40%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy. A chance of sprinkles this afternoon. Highs in the lower 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. East winds around 5 mph.

Montgomery County, MO

Today
Mostly Cloudy
75°/ 62° 24°/ 17°
0%
Saturday
Rain Showers
70°/ 58° 21°/ 14°
50%
Sunday
Rain Showers
75°24°
20%
Sun Night
Cloudy
62°17°
0%
Mon Night
Cloudy
62°17°
0%
Tuesday
Thunderstorms
78°/ 65° 26°/ 18°
70%
Wednesday
Thunderstorms
78°/ 65° 26°/ 18°
70%
Thursday
Rain Showers
78°26°
50%

Day: Patchy fog this morning. Mostly cloudy. Highs in the mid 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows in the lower 60s. East winds around 5 mph.

Quincy, IL

Today
Rain Showers
70°/ 60° 21°/ 16°
50%
Saturday
Rain Showers
65°/ 60° 18°/ 16°
70%
Sunday
Rain Showers
72°22°
20%
Sun Night
Cloudy
62°17°
0%
Mon Night
Cloudy
62°17°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wed Night-Thu
Rain Showers
65°18°
50%

Day: Mostly cloudy. A slight chance of showers this morning, then a chance of showers this afternoon. Highs around 70. East winds around 5 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows around 60. East winds around 5 mph. Chance of rain 20 percent.

Litchfield, IL

Today
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Saturday
Partly Cloudy
72°/ 58° 22°/ 14°
0%
Sunday
Partly Cloudy
75°/ 55° 24°/ 13°
0%
Mon-Mon Night
Clear
78°26°
0%
Tuesday
Rain Showers
78°/ 62° 26°/ 17°
60%
Wednesday
Thunderstorms
78°/ 62° 26°/ 17°
50%

Day: Mostly cloudy. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Springfield, IL

Today
Mostly Cloudy
70°/ 55° 21°/ 13°
0%
Saturday
Sprinkles
72°/ 58° 22°/ 14°
0%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Monday
Sunny
75°/ 58° 24°/ 14°
0%
Tuesday
Partly Cloudy
78°/ 65° 26°/ 18°
60%
Wednesday
Rain Showers
78°/ 65° 26°/ 18°
50%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy. Highs around 70. East winds around 5 mph.

Night: Mostly cloudy. Lows in the mid 50s. East winds around 5 mph.

Quincy, MO

Today
Rain Showers
70°/ 60° 21°/ 16°
50%
Saturday
Rain Showers
65°/ 60° 18°/ 16°
70%
Sunday
Rain Showers
72°22°
20%
Sun Night
Cloudy
62°17°
0%
Mon Night
Cloudy
62°17°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wed Night-Thu
Rain Showers
65°18°
50%

Day: Mostly cloudy. A slight chance of showers this morning, then a chance of showers this afternoon. Highs around 70. East winds around 5 mph. Chance of rain 50 percent.

Night: Mostly cloudy. A slight chance of showers after midnight. Lows around 60. East winds around 5 mph. Chance of rain 20 percent.

Taylorville, IL

Today
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Saturday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Mon-Mon Night
Clear
78°26°
0%
Tuesday
Sunny
78°/ 62° 26°/ 17°
60%
Wednesday
Rain Showers
78°/ 62° 26°/ 17°
50%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy. Highs in the lower 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the mid 50s. East winds around 5 mph.

Beardstown, IL

Today
Sprinkles
68°/ 58° 20°/ 14°
0%
Saturday
Rain
68°/ 58° 20°/ 14°
40%
Sunday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Monday
Sunny
75°/ 58° 24°/ 14°
0%
Tuesday
Rain Showers
75°/ 65° 24°/ 18°
70%
Wed Night
Rain Showers
62°17°
40%
Thursday
Rain Showers
75°24°
50%

Day: Cloudy with a chance of sprinkles. Highs in the upper 60s. East winds around 5 mph.

Night: Mostly cloudy. A chance of sprinkles in the evening. Lows in the upper 50s. East winds around 5 mph.

Centralia, IL

Today
Mostly Cloudy
75°/ 58° 24°/ 14°
0%
Saturday
Mostly Cloudy
72°/ 58° 22°/ 14°
0%
Sunday
Partly Cloudy
75°24°
0%
Sun Night
Clear
55°13°
0%
Mon Night
Clear
55°13°
0%
Tuesday
Sunny
82°/ 65° 28°/ 18°
50%
Wednesday
Thunderstorms
78°/ 65° 26°/ 18°
60%
Thursday
Thunderstorms
80°27°
50%

Day: Mostly cloudy this morning, then becoming partly sunny. Areas of fog this morning. Highs in the mid 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Jefferson County, MO

Today
Mostly Cloudy
78°/ 58° 26°/ 14°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
20%
Sunday
Mostly Cloudy
78°26°
0%
Sun Night
Cloudy
58°14°
0%
Mon Night
Cloudy
58°14°
0%
Tuesday
Rain Showers
82°/ 65° 28°/ 18°
50%
Wednesday
Rain Showers
78°/ 65° 26°/ 18°
60%
Thursday
Thunderstorms
80°27°
50%

Day: Areas of fog this morning. Mostly cloudy. Highs in the upper 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Monroe County, IL

Today
Mostly Cloudy
78°/ 58° 26°/ 14°
0%
Saturday
Rain Showers
72°/ 58° 22°/ 14°
20%
Sunday
Mostly Cloudy
78°26°
0%
Sun Night
Cloudy
58°14°
0%
Mon Night
Cloudy
58°14°
0%
Tuesday
Rain Showers
82°/ 65° 28°/ 18°
50%
Wednesday
Rain Showers
78°/ 65° 26°/ 18°
60%
Thursday
Thunderstorms
80°27°
50%

Day: Areas of fog this morning. Mostly cloudy. Highs in the upper 70s. Northeast winds around 5 mph.

Night: Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph.

Petersburg, IL

Today
Sprinkles
70°/ 55° 21°/ 13°
0%
Saturday
Sprinkles
72°/ 58° 22°/ 14°
0%
Sunday
Partly Cloudy
72°/ 55° 22°/ 13°
0%
Mon-Mon Night
Clear
75°24°
0%
Tuesday
Rain Showers
78°/ 65° 26°/ 18°
70%
Wednesday
Rain Showers
75°/ 62° 24°/ 17°
50%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy with a chance of sprinkles. Highs around 70. East winds around 5 mph.

Night: Mostly cloudy. A chance of sprinkles in the evening. Lows in the mid 50s. East winds around 5 mph.

Washington, MO

Today
Mostly Cloudy
75°/ 60° 24°/ 16°
0%
Saturday
Rain Showers
75°/ 58° 24°/ 14°
20%
Sunday
Mostly Cloudy
78°26°
0%
Sun Night
Cloudy
62°17°
0%
Mon Night
Cloudy
62°17°
0%
Tuesday
Rain Showers
80°/ 65° 27°/ 18°
60%
Wednesday
Thunderstorms
78°/ 65° 26°/ 18°
70%

Day: Mostly cloudy this morning, then becoming partly sunny. Patchy fog this morning. Highs in the mid 70s. East winds around 5 mph.

Night: Mostly cloudy. Lows around 60. East winds around 5 mph.

Rushville, IL

Today
Rain
68°/ 58° 20°/ 14°
40%
Saturday
Rain
68°/ 58° 20°/ 14°
50%
Sunday
Mostly Cloudy
70°21°
0%
Sun Night
Cloudy
58°14°
0%
Mon Night
Cloudy
58°14°
0%
Tuesday
Rain Showers
75°/ 62° 24°/ 17°
70%
Wed Night
Rain Showers
62°17°
40%
Thursday
Rain Showers
75°24°
50%

Day: Cloudy. A chance of sprinkles this morning, then a chance of rain this afternoon. Highs in the upper 60s. East winds around 5 mph. Chance of rain 40 percent.

Night: Mostly cloudy. A slight chance of rain in the evening. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percent.

Shelbyville, IL

Today
Mostly Cloudy
72°/ 55° 22°/ 13°
0%
Saturday
Sunny
72°/ 55° 22°/ 13°
0%
Sunday
Partly Cloudy
75°24°
0%
Sun Night
Clear
55°13°
0%
Mon Night
Clear
55°13°
0%
Tuesday
Sunny
78°/ 62° 26°/ 17°
60%
Wednesday
Rain Showers
78°/ 62° 26°/ 17°
50%
Thursday
Rain Showers
78°26°
50%

Day: Mostly cloudy this morning, then becoming partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph.

Night: Mostly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.

Names listed above may include county names.

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