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
3:55 PM CDT MAY 13, 2026
Scattered Clouds 66°F
Feels Like:	66°F
Dewpoint:	36°F
Rel. Hum.:	33%
Visibility:	10 miles
Wind:	N at 10 mph, gusts to 20
Pressure:	30.03 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
Mostly sunny and much cooler. Near steady temperature in the mid 60s. Northwest winds 15 to 20 mph with gusts up to 30 mph.

TONIGHT
Clear. Lows in the lower 40s. North winds 10 to 15 mph with gusts up to 25 mph, becoming northwest around 5 mph after midnight.

THURSDAY
Sunny. Highs in the lower 70s. South winds around 5 mph.

THURSDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Not as cool with lows in the lower 50s. South winds 10 to 15 mph. Chance of rain 50 percent.

FRIDAY
Mostly cloudy with a chance of showers and thunderstorms in the morning, then mostly sunny in the afternoon. Highs in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent.

FRIDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 40 percent.

SATURDAY AND SATURDAY NIGHT
Showers and thunderstorms likely. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 70 percent.

SUNDAY
Partly sunny. Highs in the mid 80s.

SUNDAY NIGHT
Partly cloudy. Lows in the upper 60s.

MONDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 80s. Chance of rain 50 percent.

MONDAY NIGHT
Showers and thunderstorms likely in the evening, then showers likely after midnight. Breezy with lows in the mid 60s. Chance of rain 70 percent.

TUESDAY
Showers likely. Highs in the upper 70s. Chance of rain 70 percent.

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 7:00 AM CDT 5/13/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
13 MAY 2026

1 PM

65°

65°

Partly Cloudy

0%

0% Thunder
( 1% severe)

NNW 14

38%

39°

High 68°

4 PM

67°

67°

Clear

NNW 14

33%

37°

Clear

7 PM

65°

65°

Clear

0%

0% Thunder
( 1% severe)

N 10

34%

36°

10 PM

55°

55°

Clear

CALM

51%

37°

Thursday
14 MAY 2026

1 AM

49°

49°

Clear

0%

0% Thunder
( 0% severe)

CALM

61%

36°

Low 43°

4 AM

45°

44°

Clear

CALM

71%

36°

High 72°

7 AM

46°

45°

Clear

0%

0% Thunder
( 1% severe)

CALM

71%

37°

Clear

10 AM

60°

61°

Clear

CALM

42%

37°

1 PM

68°

68°

Clear

0%

0% Thunder
( 1% severe)

CALM

29%

35°

4 PM

72°

72°

Clear

S 3

25%

34°

7 PM

70°

70°

Partly Cloudy

2%

0% Thunder
( 10% severe)

SSE 6

29%

36°

10 PM

59°

58°

Partly Cloudy

SE 6

42%

36°

Friday
15 MAY 2026

1 AM

57°

55°

Mostly Cloudy

48%
RAIN
***

0% Thunder
( 14% severe)

SSE 8

47%

37°

Low 53°

4 AM

56°

53°

Mostly Cloudy

SSE 10

53%

39°

High 80°

7 AM

56°

53°

Mostly Cloudy

36%
RAIN
.01–.1 in

0% Thunder
( 8% severe)

S 12

66%

45°

Mostly Cloudy

Chance of Rain

10 AM

63°

61°

Mostly Cloudy

S 14

58%

48°

1 PM

72°

72°

Partly Cloudy

4%

0% Thunder
( 14% severe)

S 14

48%

51°

4 PM

78°

79°

Partly Cloudy

S 12

42%

53°

7 PM

77°

78°

Partly Cloudy

S 9

45%

54°


LACON/MARSHALL CNTY, IL extended weather forecast
Saturday 16 MAY 2026	Sunday 17 MAY 2026	Monday 18 MAY 2026	Tuesday 19 MAY 2026	Wednesday 20 MAY 2026
Low 60°	Low 60°	Low 65°	Low 63°	Low 53°
High 79°	High 81°	High 83°	High 72°	High 71°

Overcast 64% Rain	Mostly Cloudy 55% Rain	Partly Cloudy 35% Rain	Overcast 47% Rain	Overcast 34% Rain

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