LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

6:35 PM CST FEB 11, 2026
Clear
34°F
Feels Like: 34°F
Dewpoint: 23°F
Rel. Hum.: 63%
Visibility: 10 miles
Wind: Calm
Pressure: 30.27 inches
Last 72 hours

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LACON, IL 61540
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy this evening, then becoming mostly cloudy. Lows in the upper 20s. West winds around 5 mph.
THURSDAY
Cloudy with a slight chance of snow in the morning, then mostly sunny in the afternoon. Highs in the upper 40s. Southeast winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of snow 20 percent.
THURSDAY NIGHT
Mostly clear. Lows in the upper 20s. South winds around 5 mph.
FRIDAY
Sunny. Highs in the lower 50s. Southwest winds 5 to 10 mph.
FRIDAY NIGHT
Clear in the evening, then becoming partly cloudy. Lows in the lower 30s. Southwest winds around 5 mph.
SATURDAY AND SATURDAY NIGHT
Mostly cloudy. Highs in the mid 50s. Lows in the mid 30s.
SUNDAY
Mostly sunny. Highs in the upper 50s.
SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s.
WASHINGTONS BIRTHDAY THROUGH TUESDAY
Mostly cloudy. Highs in the upper 50s. Lows in the lower 40s.
TUESDAY NIGHT
Mostly cloudy in the evening, then partly cloudy with a chance of rain after midnight. Lows in the upper 40s. Chance of rain 30 percent.
WEDNESDAY
Sunny with a 30 percent chance of rain. Highs in the lower 60s.

Visible Weather Satellite
LACON, IL 61540
Infrared Weather Satellite
LACON, IL 61540
NEXRAD Weather Radar
LACON, IL 61540

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created  6:00 AM CST  2/11/2026
Wednesday
11 FEB 2026
LACON, IL 61540 weather forecast Day 1, 12 hours 12 PM 41° 36° Clear 0%

0% Thunder
( 0% severe)
NW   8 45% 22°
High 45° LACON, IL 61540 weather forecast Day 1, 15 hours 3 PM 44° 39° Clear NW   8 40% 22°
Clear



LACON, IL 61540 weather forecast Day 1, 18 hours 6 PM 38° 36° Clear 0%

0% Thunder
( 0% severe)
NW   3 56% 24°
LACON, IL 61540 weather forecast Day 1, 21 hours 9 PM 33° 30° Partly Cloudy NW   1 71% 25°
Thursday
12 FEB 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 12 AM 30° 27° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   1 77% 24°
Low 28° LACON, IL 61540 weather forecast Day 2, 3 hours 3 AM 29° 26° Mostly Cloudy   CALM 80% 24°
High 47° LACON, IL 61540 weather forecast Day 2, 6 hours 6 AM 29° 26° Mostly Cloudy 5%

0% Thunder
( 1% severe)
  CALM 80% 24°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 9 AM 35° 33° Mostly Cloudy   CALM 69% 26°
LACON, IL 61540 weather forecast Day 2, 12 hours 12 PM 43° 42° Mostly Cloudy 3%

0% Thunder
( 0% severe)
SSW   2 53% 27°
LACON, IL 61540 weather forecast Day 2, 15 hours 3 PM 47° 46° Partly Cloudy SW   2 43% 26°
LACON, IL 61540 weather forecast Day 2, 18 hours 6 PM 41° 39° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   2 54% 26°
LACON, IL 61540 weather forecast Day 2, 21 hours 9 PM 35° 33° Partly Cloudy S   1 72% 27°
Friday
13 FEB 2026
LACON, IL 61540 weather forecast Day 3, 0 hours 12 AM 32° 29° Partly Cloudy 1%

0% Thunder
( 1% severe)
S   1 78% 26°
Low 28° LACON, IL 61540 weather forecast Day 3, 3 hours 3 AM 30° 27° Partly Cloudy S   2 81% 25°
High 53° LACON, IL 61540 weather forecast Day 3, 6 hours 6 AM 30° 27° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   2 84% 26°

Clear



LACON, IL 61540 weather forecast Day 3, 9 hours 9 AM 38° 34° Clear SSW   5 70% 29°
LACON, IL 61540 weather forecast Day 3, 15 hours 12 PM 48° 44° Clear 0%

0% Thunder
( 0% severe)
SW   8 47% 29°
LACON, IL 61540 weather forecast Day 3, 18 hours 3 PM 52° 50° Clear SW   7 39% 28°
LACON, IL 61540 weather forecast Day 3, 21 hours 6 PM 45° 44° Clear     SSW   3 53% 29°

LACON/MARSHALL CNTY, IL extended weather forecast

Saturday
14 FEB 2026
Sunday
15 FEB 2026
Monday
16 FEB 2026
Tuesday
17 FEB 2026
Wednesday
18 FEB 2026
Low 29° Low 35° Low 32° Low 34° Low 49°
High 52° High 51° High 51° High 56° High 66°
LACON, IL 61540 weather forecast Day 4 LACON, IL 61540 weather forecast Day 5 LACON, IL 61540 weather forecast Day 6 LACON, IL 61540 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
5% Rain
Mostly Cloudy
13% Rain
Clear
4% Rain
Mostly Cloudy
11% Rain
Mostly Cloudy
36% Rain
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