LACON, IL 61540 Weather Forecast & Current Conditions

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61540 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
LACON/MARSHALL CNTY, IL Current Weather
7:35 PM CST JAN 14, 2026
Clear 23°F
Feels Like:	13°F
Dewpoint:	7°F
Rel. Hum.:	45%
Visibility:	10 miles
Wind:	NNW at 10 mph, gusts to 16
Pressure:	30.07 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

61540 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	LACON, IL 61540 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly clear. Much cooler with lows around 14. Northwest winds 10 to 15 mph with gusts up to 30 mph.

THURSDAY
Mostly sunny. Highs in the upper 20s. Northwest winds 5 to 10 mph, becoming southwest in the afternoon.

THURSDAY NIGHT
Snow. Snow accumulation around an inch. Not as cool with lows in the mid 20s. Temperature rising into the upper 20s after midnight. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 80 percent.

FRIDAY
Mostly cloudy. A chance of snow in the afternoon. Little or no additional snow accumulation. Highs in the upper 30s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of snow 30 percent.

FRIDAY NIGHT
Mostly cloudy with a 30 percent chance of snow. Little or no snow accumulation. Cooler with lows around 12. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 2 below after midnight.

SATURDAY
Partly sunny in the morning, then becoming mostly cloudy. Much cooler with highs 15 to 20. Wind chill values as low as 5 below.

SATURDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows zero to 5 above zero. Wind chill values as low as 10 below.

SUNDAY AND SUNDAY NIGHT
Mostly cloudy. Highs around 20. Lows 5 to 10 above. Wind chill values as low as 10 below.

MARTIN LUTHER KING JR DAY
Mostly sunny. Highs around 15. Wind chill values as low as 10 below in the morning.

MONDAY NIGHT
Mostly clear. Cold with lows zero to 5 above zero. Wind chill values as low as 10 below.

TUESDAY AND TUESDAY NIGHT
Partly cloudy. Highs in the lower 20s. Lows 10 to 15. Wind chill values as low as 10 below.

WEDNESDAY
Partly sunny. Highs around 30.

61540 WEATHER SATELLITE LOOPS

Visible Weather Satellite
LACON, IL 61540

Infrared Weather Satellite
LACON, IL 61540

61540 WEATHER RADAR LOOP

NEXRAD Weather Radar
LACON, IL 61540

MOS COMPUTER WEATHER FORECAST

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created 6:00 AM CST 1/14/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
14 JAN 2026

12 PM

25°

11°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

NNW 18

46%

9°

High 26°

3 PM

24°

11°

Mostly Cloudy

NNW 16

43%

7°

Decreasing Clouds

6 PM

22°

10°

Clear

0%

0% Thunder
( 0% severe)

NNW 13

43%

5°

9 PM

20°

8°

Partly Cloudy

NNW 12

47%

5°

Thursday
15 JAN 2026

12 AM

18°

6°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NNW 10

49%

4°

Low 12°

3 AM

16°

4°

Partly Cloudy

NNW 9

54%

4°

High 27°

6 AM

15°

5°

Partly Cloudy

0%

0% Thunder
( 0% severe)

NNW 7

57%

4°

Partly Cloudy

9 AM

17°

9°

Partly Cloudy

NW 6

51%

4°

12 PM

22°

13°

Partly Cloudy

3%

0% Thunder
( 0% severe)

W 7

40%

4°

3 PM

26°

17°

Mostly Cloudy

SW 8

34%

4°

6 PM

25°

16°

Mostly Cloudy

58%
SNOW
10–20 in

0% Thunder
( 1% severe)

SSW 8

41%

7°

9 PM

25°

15°

Mostly Cloudy

SSW 10

54%

12°

Friday
16 JAN 2026

12 AM

27°

17°

Mostly Cloudy

36%
SNOW
1–2.5 in

0% Thunder
( 1% severe)

SSW 12

69%

19°

Low 24°

3 AM

28°

18°

Mostly Cloudy

SW 12

76%

22°

High 37°

6 AM

29°

19°

Mostly Cloudy

6%

0% Thunder
( 2% severe)

WSW 12

84%

25°

Mostly Cloudy

9 AM

33°

24°

Mostly Cloudy

W 13

78%

27°

12 PM

36°

27°

Mostly Cloudy

18%
SNOW
<.1 in

0% Thunder
( 1% severe)

W 15

66%

26°

3 PM

35°

26°

Mostly Cloudy

W 14

63%

24°

6 PM

31°

22°

Mostly Cloudy

W 12

71%

23°


LACON/MARSHALL CNTY, IL extended weather forecast
Saturday 17 JAN 2026	Sunday 18 JAN 2026	Monday 19 JAN 2026	Tuesday 20 JAN 2026	Wednesday 21 JAN 2026
Low 13°	Low 5°	Low 11°	Low 7°	Low 11°
High 18°	High 19°	High 21°	High 20°	High 28°

Overcast 39% Snow	Mostly Cloudy 17% Snow	Mostly Cloudy 17% Snow	Partly Cloudy 15% Snow	Overcast 20% Snow

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