LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

5:35 PM CST FEB 7, 2026
Scattered Clouds
28°F
Feels Like: 22°F
Dewpoint: -2°F
Rel. Hum.: 22%
Visibility: 10 miles
Wind: SE at 5 mph
Pressure: 30.34 inches
Last 72 hours

Local Area Snow Depth

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LACON, IL 61540
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly cloudy. Lows in the lower 20s. Southeast winds 5 to 10 mph.
SUNDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 30s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 20s. Southeast winds 5 to 10 mph.
MONDAY
Mostly sunny. Not as cool with highs in the upper 40s. South winds 5 to 10 mph.
MONDAY NIGHT
Partly cloudy. Not as cool with lows in the mid 30s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
TUESDAY
Mostly sunny. Highs in the lower 50s.
TUESDAY NIGHT AND WEDNESDAY
Mostly cloudy. Lows in the upper 20s. Highs in the mid 40s.
WEDNESDAY NIGHT
Mostly cloudy. Lows in the upper 20s.
THURSDAY AND THURSDAY NIGHT
Mostly cloudy with a 30 percent chance of snow. Highs in the lower 40s. Lows in the mid 20s.
FRIDAY
Partly sunny. Highs in the lower 40s.
FRIDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 20s.
SATURDAY
Mostly sunny. A chance of rain and snow in the afternoon. Highs in the lower 40s. Chance of precipitation 30 percent.

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/ 7/2026
Saturday
7 FEB 2026
LACON, IL 61540 weather forecast Day 1, 12 hours 12 PM 26° 23° Partly Cloudy 0%

0% Thunder
( 0% severe)
ENE   1 29%
High 30° LACON, IL 61540 weather forecast Day 1, 15 hours 3 PM 29° 26° Partly Cloudy SE   1 25%
Mostly Cloudy



LACON, IL 61540 weather forecast Day 1, 18 hours 6 PM 26° 22° Mostly Cloudy 3%

0% Thunder
( 0% severe)
SE   3 34%
LACON, IL 61540 weather forecast Day 1, 21 hours 9 PM 24° 18° Mostly Cloudy SE   5 46%
Sunday
8 FEB 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 12 AM 23° 16° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SE   6 53% 10°
Low 20° LACON, IL 61540 weather forecast Day 2, 3 hours 3 AM 22° 13° Mostly Cloudy SE   7 61% 12°
High 35° LACON, IL 61540 weather forecast Day 2, 6 hours 6 AM 23° 14° Mostly Cloudy 2%

0% Thunder
( 1% severe)
SE   8 62% 13°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 9 AM 26° 16° Mostly Cloudy SE   10 60% 15°
LACON, IL 61540 weather forecast Day 2, 12 hours 12 PM 32° 24° Partly Cloudy 1%

0% Thunder
( 0% severe)
SE   10 46% 15°
LACON, IL 61540 weather forecast Day 2, 15 hours 3 PM 34° 27° Partly Cloudy SE   9 45% 16°
LACON, IL 61540 weather forecast Day 2, 18 hours 6 PM 31° 25° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   6 51% 16°
LACON, IL 61540 weather forecast Day 2, 21 hours 9 PM 27° 22° Partly Cloudy SE   5 60% 16°
Monday
9 FEB 2026
LACON, IL 61540 weather forecast Day 3, 0 hours 12 AM 25° 21° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   3 69% 17°
Low 22° LACON, IL 61540 weather forecast Day 3, 3 hours 3 AM 24° 20° Mostly Cloudy SSE   2 72% 17°
High 47° LACON, IL 61540 weather forecast Day 3, 6 hours 6 AM 24° 20° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSE   2 75% 18°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 3, 9 hours 9 AM 31° 26° Partly Cloudy S   5 64% 21°
LACON, IL 61540 weather forecast Day 3, 15 hours 12 PM 41° 36° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SSW   7 52% 25°
LACON, IL 61540 weather forecast Day 3, 18 hours 3 PM 47° 44° Mostly Cloudy SSW   7 47% 28°
LACON, IL 61540 weather forecast Day 3, 21 hours 6 PM 42° 38° Partly Cloudy     S   6 62% 30°

LACON/MARSHALL CNTY, IL extended weather forecast

Tuesday
10 FEB 2026
Wednesday
11 FEB 2026
Thursday
12 FEB 2026
Friday
13 FEB 2026
Saturday
14 FEB 2026
Low 35° Low 27° Low 24° Low 23° Low 24°
High 45° High 41° High 37° High 42° High 44°
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
Clear
8% Rain
Partly Cloudy
9% Rain/Snow
Partly Cloudy
14% Snow
Clear
13% Snow
Clear
11% Rain/Snow
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