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
12:35 PM CST JAN 18, 2026
Broken Clouds 19°F
Feels Like:	8°F
Dewpoint:	1°F
Rel. Hum.:	40%
Visibility:	10 miles
Wind:	SSW at 10 mph
Pressure:	29.98 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

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(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

THIS AFTERNOON
Cloudy with a 50 percent chance of snow. Little or no snow accumulation. Highs in the lower 20s. Southwest winds 10 to 15 mph with gusts up to 25 mph.

TONIGHT
Mostly cloudy. Snow likely in the evening, then a chance of flurries after midnight. Little or no snow accumulation. Blustery, cold with lows around 2 above. West winds 20 to 25 mph with gusts up to 40 mph. Chance of snow 70 percent. Wind chill values as low as 19 below after midnight.

MARTIN LUTHER KING JR DAY
Sunny, brisk, cooler with highs around 12. Northwest winds 15 to 25 mph with gusts up to 35 mph. Wind chill values as low as 21 below.

MONDAY NIGHT
Partly cloudy and cold. Near steady temperature around 7 above. West winds 5 to 10 mph. Wind chill values as low as 8 below.

TUESDAY
Mostly sunny. Not as cool with highs in the upper 20s. Southwest winds 10 to 15 mph. Wind chill values as low as 7 below in the morning.

TUESDAY NIGHT AND WEDNESDAY
Mostly cloudy. Lows around 20. Highs in the lower 30s.

WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. Lows 10 to 15. Highs in the mid 20s.

THURSDAY NIGHT AND FRIDAY
Mostly cloudy. Lows around 20. Highs in the lower 30s.

FRIDAY NIGHT AND SATURDAY
Mostly cloudy. A 30 percent chance of snow. Lows around 10 above. Highs 15 to 20. Wind chill values as low as 5 below.

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 1/18/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Sunday
18 JAN 2026

12 PM

17°

5°

Mostly Cloudy

26%
RAIN/SNOW
<.05 in

0% Thunder
( 1% severe)

SW 10

44%

1°

High 21°

3 PM

20°

9°

Mostly Cloudy

SSW 10

44%

4°

Mostly Cloudy

Chance of Rain & Snow

6 PM

20°

10°

Mostly Cloudy

21%
SNOW
<.1 in

0% Thunder
( 3% severe)

SW 8

55%

8°

9 PM

19°

7°

Mostly Cloudy

W 12

67%

11°

Monday
19 JAN 2026

12 AM

15°

-1°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

WNW 16

60%

5°

Low 0°

3 AM

8°

-10°

Mostly Cloudy

WNW 17

53%

-4°

High 10°

6 AM

3°

-16°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WNW 16

52%

-9°

Partly Cloudy

9 AM

3°

-16°

Partly Cloudy

WNW 16

49%

-10°

12 PM

7°

-10°

Partly Cloudy

0%

0% Thunder
( 0% severe)

WNW 15

40%

-10°

3 PM

10°

-5°

Partly Cloudy

WNW 13

36%

-9°

6 PM

8°

-4°

Partly Cloudy

0%

0% Thunder
( 0% severe)

W 8

42%

-8°

9 PM

8°

-1°

Mostly Cloudy

W 5

47%

-6°

Tuesday
20 JAN 2026

12 AM

9°

2°

Mostly Cloudy

2%

0% Thunder
( 0% severe)

WSW 3

47%

-5°

Low 4°

3 AM

7°

-2°

Partly Cloudy

WSW 5

55%

-4°

High 25°

6 AM

7°

-2°

Clear

2%

0% Thunder
( 0% severe)

WSW 5

58%

-3°

Partly Cloudy

9 AM

13°

4°

Clear

W 6

50%

0°

12 PM

20°

10°

Partly Cloudy

5%

0% Thunder
( 0% severe)

WSW 8

36%

0°

3 PM

23°

14°

Partly Cloudy

SW 8

35%

2°

6 PM

21°

15°

Mostly Cloudy

S 5

45%

5°


LACON/MARSHALL CNTY, IL extended weather forecast
Wednesday 21 JAN 2026	Thursday 22 JAN 2026	Friday 23 JAN 2026	Saturday 24 JAN 2026	Sunday 25 JAN 2026
Low 19°	Low 15°	Low 15°	Low 10°	Low -3°
High 30°	High 24°	High 32°	High 13°	High 8°

Overcast 29% Snow	Mostly Cloudy 24% Snow	Mostly Cloudy 46% Snow	Overcast 60% Snow	Mostly Cloudy 22% Snow

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