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
4:35 PM CDT APR 15, 2026
Overcast 73°F
Feels Like:	73°F
Dewpoint:	61°F
Rel. Hum.:	66%
Visibility:	10 miles
Wind:	S at 15 mph, gusts to 21
Pressure:	29.77 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

TONIGHT
A chance of showers and thunderstorms this evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.

THURSDAY
Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 70s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

THURSDAY NIGHT
Mostly clear. Lows in the mid 50s. South winds around 5 mph, becoming southeast after midnight.

FRIDAY
Mostly sunny. A chance of showers in the afternoon. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent.

FRIDAY NIGHT
Showers with a chance of thunderstorms. Lows in the mid 40s. South winds 15 to 20 mph, becoming southwest after midnight. Chance of rain 90 percent.

SATURDAY
Partly sunny. A chance of showers in the morning. Much cooler with highs in the mid 50s. Chance of rain 40 percent.

SATURDAY NIGHT THROUGH SUNDAY NIGHT
Mostly clear. Lows in the mid 30s. Highs in the mid 50s.

MONDAY
Sunny. Not as cool with highs in the mid 60s.

MONDAY NIGHT AND TUESDAY
Partly cloudy. Lows in the lower 50s. Highs in the mid 70s.

TUESDAY NIGHT
Mostly clear. Lows in the lower 50s.

WEDNESDAY
Mostly sunny. Highs in the mid 70s.

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 4/15/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
15 APR 2026

1 PM

71°

71°

Mostly Cloudy

85%
RAIN
***

0% Thunder
( 63% severe)

SSW 13

73%

62°

High 73°

4 PM

72°

72°

Mostly Cloudy

SSW 12

71%

62°

Mostly Cloudy

Rain Likely

7 PM

70°

70°

Mostly Cloudy

72%
RAIN
***

0% Thunder
( 41% severe)

S 9

71%

60°

10 PM

66°

66°

Mostly Cloudy

SW 9

78%

59°

Thursday
16 APR 2026

1 AM

64°

64°

Mostly Cloudy

39%
RAIN
.1–.25 in

0% Thunder
( 20% severe)

SSW 8

81%

58°

Low 60°

4 AM

62°

62°

Mostly Cloudy

SW 7

84%

57°

High 76°

7 AM

60°

59°

Mostly Cloudy

21%
RAIN
.01–.1 in

0% Thunder
( 8% severe)

WSW 7

84%

55°

Mostly Cloudy

Chance of Rain

10 AM

65°

65°

Mostly Cloudy

W 9

70%

55°

1 PM

71°

71°

Partly Cloudy

18%
RAIN
.01–.1 in

0% Thunder
( 4% severe)

W 10

53%

53°

4 PM

73°

73°

Partly Cloudy

W 9

46%

51°

7 PM

70°

70°

Partly Cloudy

3%

0% Thunder
( 1% severe)

WNW 3

51%

51°

10 PM

61°

62°

Clear

SSE 1

67%

50°

Friday
17 APR 2026

1 AM

57°

58°

Clear

0%

0% Thunder
( 1% severe)

SE 1

75%

49°

Low 54°

4 AM

54°

54°

Partly Cloudy

SE 2

83%

49°

High 83°

7 AM

55°

54°

Partly Cloudy

1%

0% Thunder
( 2% severe)

SE 5

80%

49°

Partly Cloudy

Chance of Rain

10 AM

68°

68°

Mostly Cloudy

SSE 9

63%

55°

1 PM

78°

79°

Partly Cloudy

30%
RAIN
.01–.1 in

0% Thunder
( 25% severe)

S 13

47%

56°

4 PM

80°

80°

Partly Cloudy

S 14

42%

55°

7 PM

75°

75°

Mostly Cloudy

S 12

50%

55°


LACON/MARSHALL CNTY, IL extended weather forecast
Saturday 18 APR 2026	Sunday 19 APR 2026	Monday 20 APR 2026	Tuesday 21 APR 2026	Wednesday 22 APR 2026
Low 48°	Low 32°	Low 29°	Low 48°	Low 47°
High 53°	High 51°	High 60°	High 69°	High 67°

Overcast 82% Rain	Partly Cloudy 18% Rain/Snow	Clear 3% Rain	Partly Cloudy 23% Rain	Partly Cloudy 20% Rain

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