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
6:35 AM CST DEC 2, 2025
Overcast Mist 16°F
Feels Like:	7°F
Dewpoint:	14°F
Rel. Hum.:	91%
Visibility:	3/4 miles
Wind:	W at 6 mph
Pressure:	30.06 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Weather Map

(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

TODAY
Mostly cloudy. Highs in the lower 20s. West winds around 5 mph.

TONIGHT
Mostly cloudy. Lows around 19. Temperature rising into the mid 20s after midnight. South winds 10 to 15 mph with gusts up to 25 mph.

WEDNESDAY
Mostly cloudy. Snow likely in the afternoon. Little or no snow accumulation. Not as cool with highs in the mid 30s. Temperature falling into the upper 20s in the afternoon. Southwest winds 10 to 15 mph, becoming west in the afternoon. Chance of snow 60 percent.

WEDNESDAY NIGHT
Mostly cloudy in the evening, then clearing. Much colder with lows around 2 below. Northwest winds 5 to 10 mph with gusts up to 20 mph. Wind chill values as low as 15 below after midnight.

THURSDAY
Sunny. Much cooler with highs around 12. Northwest winds around 5 mph, becoming west around 5 mph in the afternoon.

THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Cold with lows around zero. Temperature rising to around 5 above after midnight. Wind chill values as low as 15 below.

FRIDAY THROUGH SATURDAY
Mostly cloudy. Highs in the upper 20s. Lows 15 to 20. Wind chill values as low as 10 below.

SATURDAY NIGHT
Mostly cloudy with a 30 percent chance of snow. Lows around 15.

SUNDAY THROUGH MONDAY
Mostly cloudy. Highs in the upper 20s. Lows around 10 above.

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 PM CST 12/ 1/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
2 DEC 2025

12 AM

19°

15°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

W 1

95%

18°

Low 13°

3 AM

16°

11°

Mostly Cloudy

WNW 2

95%

15°

High 24°

6 AM

14°

9°

Mostly Cloudy

0%

0% Thunder
( 0% severe)

WNW 1

90%

12°

Mostly Cloudy

9 AM

17°

12°

Mostly Cloudy

W 2

86%

14°

12 PM

21°

13°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

WSW 6

79%

16°

3 PM

23°

16°

Mostly Cloudy

SW 6

75%

17°

6 PM

19°

11°

Mostly Cloudy

1%

0% Thunder
( 0% severe)

S 6

91%

17°

9 PM

19°

10°

Mostly Cloudy

SSW 7

91%

17°

Wednesday
3 DEC 2025

12 AM

21°

11°

Mostly Cloudy

3%

0% Thunder
( 0% severe)

SSW 9

83%

17°

Low 18°

3 AM

23°

12°

Mostly Cloudy

SSW 10

83%

19°

High 33°

6 AM

25°

15°

Mostly Cloudy

13%
SNOW
<.1 in

0% Thunder
( 1% severe)

SSW 9

83%

21°

Mostly Cloudy

Chance of Snow

9 AM

28°

19°

Mostly Cloudy

SW 9

88%

25°

12 PM

32°

24°

Mostly Cloudy

46%
SNOW
.1–1 in

0% Thunder
( 2% severe)

WSW 9

81%

27°

3 PM

31°

23°

Mostly Cloudy

WNW 9

84%

27°

6 PM

24°

14°

Mostly Cloudy

17%
SNOW
.1–1 in

0% Thunder
( 0% severe)

NNW 9

91%

22°

9 PM

19°

8°

Mostly Cloudy

NNW 9

82%

15°


LACON/MARSHALL CNTY, IL extended weather forecast
Thursday 4 DEC 2025	Friday 5 DEC 2025	Saturday 6 DEC 2025	Sunday 7 DEC 2025	Monday 8 DEC 2025
Low -1°	Low 0°	Low 14°	Low 19°	Low 4°
High 13°	High 25°	High 27°	High 27°	High 28°

Partly Cloudy 9% Snow	Partly Cloudy 11% Snow	Overcast 34% Snow	Overcast 61% Snow	Overcast 15% Snow

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