LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

1:55 PM CST JAN 28, 2026
Clear
19°F
Feels Like: 5°F
Dewpoint: 0°F
Rel. Hum.: 38%
Visibility: 10 miles
Wind: WNW at 14 mph, gusts to 20
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
THIS AFTERNOON
Sunny. Highs around 20. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 89 below.
TONIGHT
Mostly clear in the evening, then becoming partly cloudy. Cold with lows around 1 above. Northwest winds around 5 mph.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs around 16. North winds around 5 mph.
THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Cold with lows around zero. North winds around 5 mph.
FRIDAY
Mostly sunny. Highs around 17. North winds 5 to 10 mph. Wind chill values as low as 12 below in the morning.
FRIDAY NIGHT AND SATURDAY
Partly cloudy. Lows zero to 5 above zero. Highs in the lower 20s. Wind chill values as low as 10 below.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows 5 to 10 above.
SUNDAY
Mostly sunny. A chance of snow in the afternoon. Highs in the mid 20s. Chance of snow 30 percent. Wind chill values as low as 5 below in the morning.
SUNDAY NIGHT
Mostly cloudy. A chance of snow in the evening. Lows around 15. Chance of snow 30 percent.
MONDAY THROUGH TUESDAY
Mostly cloudy. Highs in the lower 30s. Lows 15 to 20.

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  1/28/2026
Wednesday
28 JAN 2026
LACON, IL 61540 weather forecast Day 1, 12 hours 12 PM 16° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   10 43%
High 20° LACON, IL 61540 weather forecast Day 1, 15 hours 3 PM 19° Partly Cloudy WNW   10 40%
Partly Cloudy



LACON, IL 61540 weather forecast Day 1, 18 hours 6 PM 13° Clear 0%

0% Thunder
( 0% severe)
WNW   5 50%
LACON, IL 61540 weather forecast Day 1, 21 hours 9 PM Clear NW   3 69%
Thursday
29 JAN 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 12 AM -1° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   1 72% -1°
Low -1° LACON, IL 61540 weather forecast Day 2, 3 hours 3 AM -3° Partly Cloudy N   1 72% -3°
High 16° LACON, IL 61540 weather forecast Day 2, 6 hours 6 AM -5° Mostly Cloudy 0%

0% Thunder
( 0% severe)
N   1 68% -5°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 9 AM Mostly Cloudy N   2 62% -3°
LACON, IL 61540 weather forecast Day 2, 12 hours 12 PM 13° Mostly Cloudy 0%

0% Thunder
( 0% severe)
N   3 45% -2°
LACON, IL 61540 weather forecast Day 2, 15 hours 3 PM 16° 11° Mostly Cloudy N   2 43%
LACON, IL 61540 weather forecast Day 2, 18 hours 6 PM 12° Partly Cloudy 2%

0% Thunder
( 0% severe)
NNW   1 53%
LACON, IL 61540 weather forecast Day 2, 21 hours 9 PM Partly Cloudy N   1 65%
Friday
30 JAN 2026
LACON, IL 61540 weather forecast Day 3, 0 hours 12 AM -1° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   1 69% -2°
Low -2° LACON, IL 61540 weather forecast Day 3, 3 hours 3 AM -3° Partly Cloudy N   2 68% -4°
High 15° LACON, IL 61540 weather forecast Day 3, 6 hours 6 AM -7° Partly Cloudy 0%

0% Thunder
( 0% severe)
N   3 72% -5°

Partly Cloudy



LACON, IL 61540 weather forecast Day 3, 9 hours 9 AM -6° Partly Cloudy N   7 62% -3°
LACON, IL 61540 weather forecast Day 3, 15 hours 12 PM 13° Partly Cloudy 1%

0% Thunder
( 1% severe)
N   9 50%
LACON, IL 61540 weather forecast Day 3, 18 hours 3 PM 15° Mostly Cloudy N   9 51%
LACON, IL 61540 weather forecast Day 3, 21 hours 6 PM 13° Mostly Cloudy     N   8 56%

LACON/MARSHALL CNTY, IL extended weather forecast

Saturday
31 JAN 2026
Sunday
1 FEB 2026
Monday
2 FEB 2026
Tuesday
3 FEB 2026
Wednesday
4 FEB 2026
Low 5° Low 9° Low 11° Low 17° Low 25°
High 16° High 23° High 31° High 35° High 36°
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
Overcast
20% Snow
Mostly Cloudy
10% Snow
Partly Cloudy
5% Snow
Mostly Cloudy
12% Snow
Overcast
38% Rain/Snow
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