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
11:35 AM CST JAN 8, 2026
Broken Clouds 54°F
Feels Like:	50°F
Dewpoint:	46°F
Rel. Hum.:	74%
Visibility:	10 miles
Wind:	S at 16 mph, gusts to 23
Pressure:	29.72 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

REST OF TODAY
A slight chance of rain late this morning, then rain with a slight chance of thunderstorms this afternoon. Some thunderstorms may produce gusty winds this afternoon. Not as cool with highs in the lower 60s. South winds 15 to 20 mph. Gusts up to 35 mph this afternoon. Chance of rain near 100 percent.

TONIGHT
Mostly cloudy. Rain with a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the lower 40s. South winds 15 to 20 mph, becoming southwest after midnight. Gusts up to 35 mph. Chance of rain 90 percent.

FRIDAY
Mostly cloudy in the morning, then becoming partly sunny. Cooler with highs in the upper 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming north 10 to 15 mph in the afternoon.

FRIDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Lows in the mid 30s. Northeast winds around 5 mph. Chance of rain 40 percent.

SATURDAY
Mostly cloudy in the morning, then becoming partly sunny. A chance of rain in the morning. A chance of snow. Little or no snow accumulation. Highs in the upper 30s. Northwest winds 15 to 20 mph. Chance of precipitation 50 percent.

SATURDAY NIGHT
Mostly cloudy with a 30 percent chance of snow. Much cooler with lows around 20.

SUNDAY
Partly sunny. Highs in the lower 30s.

SUNDAY NIGHT
Mostly clear. Lows in the lower 20s.

MONDAY AND MONDAY NIGHT
Partly cloudy. Highs in the lower 40s. Lows in the lower 30s.

TUESDAY AND TUESDAY NIGHT
Mostly cloudy. Highs in the mid 40s. Lows in the lower 30s.

WEDNESDAY
Mostly cloudy. Highs in the upper 30s.

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/ 8/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Thursday
8 JAN 2026

12 PM

54°

51°

Mostly Cloudy

97%
RAIN
***

0% Thunder
( 14% severe)

S 12

74%

46°

High 59°

3 PM

54°

50°

Mostly Cloudy

SSE 13

83%

49°

Mostly Cloudy

Rain

6 PM

57°

53°

Mostly Cloudy

77%
RAIN
***

0% Thunder
( 18% severe)

S 16

86%

53°

9 PM

58°

55°

Mostly Cloudy

SSW 16

87%

54°

Friday
9 JAN 2026

12 AM

57°

54°

Mostly Cloudy

20%
RAIN
.01–.1 in

0% Thunder
( 5% severe)

SSW 14

86%

53°

Low 40°

3 AM

50°

45°

Mostly Cloudy

WSW 14

86%

46°

High 46°

6 AM

44°

38°

Mostly Cloudy

3%

0% Thunder
( 1% severe)

W 12

82%

39°

Mostly Cloudy

9 AM

42°

36°

Mostly Cloudy

NW 12

82%

37°

12 PM

44°

39°

Partly Cloudy

1%

0% Thunder
( 0% severe)

NNW 9

70%

35°

3 PM

45°

42°

Partly Cloudy

NNW 6

63%

33°

6 PM

40°

38°

Partly Cloudy

1%

0% Thunder
( 0% severe)

N 2

76%

33°

9 PM

37°

35°

Partly Cloudy

NNE 1

85%

33°

Saturday
10 JAN 2026

12 AM

36°

34°

Mostly Cloudy

27%
RAIN
.1–.25 in

0% Thunder
( 1% severe)

ENE 1

89%

33°

Low 31°

3 AM

35°

33°

Mostly Cloudy

NE 2

89%

32°

High 40°

6 AM

35°

32°

Mostly Cloudy

38%
RAIN
***

0% Thunder
( 1% severe)

WNW 3

89%

32°

Mostly Cloudy

Chance of Rain

9 AM

36°

30°

Mostly Cloudy

WNW 7

82%

31°

12 PM

37°

30°

Partly Cloudy

26%
RAIN
.01–.1 in

0% Thunder
( 2% severe)

W 10

69%

28°

3 PM

37°

29°

Mostly Cloudy

W 12

61%

25°

6 PM

33°

24°

Partly Cloudy

WNW 12

65%

23°


LACON/MARSHALL CNTY, IL extended weather forecast
Sunday 11 JAN 2026	Monday 12 JAN 2026	Tuesday 13 JAN 2026	Wednesday 14 JAN 2026	Thursday 15 JAN 2026
Low 18°	Low 20°	Low 27°	Low 27°	Low 19°
High 29°	High 41°	High 41°	High 34°	High 29°

Mostly Cloudy 27% Snow	Partly Cloudy 8% Snow	Mostly Cloudy 13% Rain/Snow	Mostly Cloudy 23% Rain/Snow	Partly Cloudy 15% Snow

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