LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

5:55 PM CST FEB 8, 2026
Clear
30°F
Feels Like: 22°F
Dewpoint: 12°F
Rel. Hum.: 43%
Visibility: 10 miles
Wind: ESE at 9 mph
Pressure: 30.22 inches
Last 72 hours

Local Area Snow Depth

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LACON, IL 61540
Weather Forecast

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

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/ 8/2026
Sunday
8 FEB 2026
LACON, IL 61540 weather forecast Day 1, 12 hours 12 PM 34° 25° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   12 39% 13°
High 37° LACON, IL 61540 weather forecast Day 1, 15 hours 3 PM 36° 28° Partly Cloudy SE   10 37% 14°
Partly Cloudy



LACON, IL 61540 weather forecast Day 1, 18 hours 6 PM 31° 24° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   7 48% 15°
LACON, IL 61540 weather forecast Day 1, 21 hours 9 PM 27° 20° Partly Cloudy ESE   7 60% 16°
Monday
9 FEB 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 12 AM 25° 19° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SE   5 69% 17°
Low 22° LACON, IL 61540 weather forecast Day 2, 3 hours 3 AM 23° 19° Partly Cloudy SE   2 72% 16°
High 45° LACON, IL 61540 weather forecast Day 2, 6 hours 6 AM 23° 19° Partly Cloudy 1%

0% Thunder
( 0% severe)
SE   2 75% 17°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 9 AM 30° 26° Mostly Cloudy S   3 64% 20°
LACON, IL 61540 weather forecast Day 2, 12 hours 12 PM 40° 35° Mostly Cloudy 2%

0% Thunder
( 0% severe)
S   7 52% 24°
LACON, IL 61540 weather forecast Day 2, 15 hours 3 PM 44° 39° Mostly Cloudy S   8 53% 28°
LACON, IL 61540 weather forecast Day 2, 18 hours 6 PM 41° 36° Mostly Cloudy 0%

0% Thunder
( 1% severe)
S   8 62% 29°
LACON, IL 61540 weather forecast Day 2, 21 hours 9 PM 39° 33° Mostly Cloudy S   8 73% 31°
Tuesday
10 FEB 2026
LACON, IL 61540 weather forecast Day 3, 0 hours 12 AM 39° 33° Partly Cloudy 0%

0% Thunder
( 1% severe)
SSW   8 76% 32°
Low 33° LACON, IL 61540 weather forecast Day 3, 3 hours 3 AM 38° 33° Partly Cloudy WSW   7 79% 32°
High 50° LACON, IL 61540 weather forecast Day 3, 6 hours 6 AM 36° 30° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   7 82% 31°

Partly Cloudy



LACON, IL 61540 weather forecast Day 3, 9 hours 9 AM 39° 33° Partly Cloudy NNW   8 73% 31°
LACON, IL 61540 weather forecast Day 3, 15 hours 12 PM 46° 41° Partly Cloudy 1%

0% Thunder
( 0% severe)
NW   9 53% 30°
LACON, IL 61540 weather forecast Day 3, 18 hours 3 PM 48° 44° Partly Cloudy NW   9 45% 28°
LACON, IL 61540 weather forecast Day 3, 21 hours 6 PM 41° 37° Mostly Cloudy     NW   6 57% 27°

LACON/MARSHALL CNTY, IL extended weather forecast

Wednesday
11 FEB 2026
Thursday
12 FEB 2026
Friday
13 FEB 2026
Saturday
14 FEB 2026
Sunday
15 FEB 2026
Low 26° Low 22° Low 24° Low 26° Low 31°
High 39° High 39° High 36° High 40° High 45°
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
2% Rain/Snow
Mostly Cloudy
14% Snow
Overcast
50% Snow
Overcast
52% Rain/Snow/Ice
Overcast
30% Rain/Snow
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