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
1:15 PM CDT SEP 21, 2026
Overcast Mist 61°F
Feels Like:	61°F
Dewpoint:	57°F
Rel. Hum.:	87%
Visibility:	5 miles
Wind:	ENE at 6 mph
Pressure:	30.11 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 2026 Hurricanes	LACON, IL 61540 Weather Forecast	Snowfall Forecast pages Snow Depth pages

THIS AFTERNOON
Cloudy with a 20 percent chance of showers. Near steady temperature in the lower 60s. Northeast winds around 10 mph with gusts up to 20 mph.

TONIGHT
Mostly cloudy with a 20 percent chance of showers. Lows in the mid 50s. Northeast winds 5 to 10 mph with gusts up to 20 mph.

TUESDAY
Partly sunny. A chance of showers in the morning. Highs in the mid 60s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 20 percent.

TUESDAY NIGHT
Partly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph.

WEDNESDAY
Mostly sunny. Highs in the upper 60s. Northeast winds 5 to 10 mph.

WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. Lows in the lower 50s. Highs around 70.

THURSDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s.

FRIDAY AND FRIDAY NIGHT
Partly cloudy. Highs in the lower 70s. Lows in the lower 50s.

SATURDAY AND SATURDAY NIGHT
Mostly cloudy. Highs in the lower 70s. Lows in the lower 50s.

SUNDAY
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 9/21/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
21 SEP 2026

1 PM

64°

63°

Mostly Cloudy

5%

0% Thunder
( 0% severe)

ENE 10

70%

54°

High 66°

4 PM

65°

65°

Mostly Cloudy

ENE 10

68%

54°

Mostly Cloudy

7 PM

63°

62°

Mostly Cloudy

2%

0% Thunder
( 3% severe)

NE 10

70%

53°

10 PM

60°

59°

Mostly Cloudy

ENE 8

78%

53°

Tuesday
22 SEP 2026

1 AM

58°

57°

Mostly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 9% severe)

ENE 7

83%

53°

Low 53°

4 AM

57°

55°

Mostly Cloudy

NE 8

83%

52°

High 64°

7 AM

55°

53°

Mostly Cloudy

12%
RAIN
<.01 in

0% Thunder
( 5% severe)

NE 8

90%

52°

Mostly Cloudy

10 AM

59°

57°

Mostly Cloudy

NE 9

72%

50°

1 PM

62°

61°

Mostly Cloudy

4%

0% Thunder
( 3% severe)

NE 9

62%

49°

4 PM

63°

62°

Mostly Cloudy

NE 10

62%

50°

7 PM

60°

59°

Partly Cloudy

0%

0% Thunder
( 1% severe)

NE 8

67%

49°

10 PM

56°

55°

Partly Cloudy

NE 6

74%

48°

Wednesday
23 SEP 2026

1 AM

54°

54°

Partly Cloudy

0%

0% Thunder
( 1% severe)

NE 3

80%

48°

Low 50°

4 AM

53°

52°

Partly Cloudy

NNE 5

83%

48°

High 68°

7 AM

52°

50°

Partly Cloudy

0%

0% Thunder
( 1% severe)

NNE 6

93%

50°

Partly Cloudy

10 AM

61°

60°

Partly Cloudy

NE 8

70%

51°

1 PM

66°

66°

Mostly Cloudy

0%

0% Thunder
( 1% severe)

NE 9

61%

52°

4 PM

67°

67°

Partly Cloudy

NE 9

61%

53°

7 PM

64°

64°

Partly Cloudy

NE 7

65%

52°


LACON/MARSHALL CNTY, IL extended weather forecast
Thursday 24 SEP 2026	Friday 25 SEP 2026	Saturday 26 SEP 2026	Sunday 27 SEP 2026	Monday 28 SEP 2026
Low 52°	Low 55°	Low 51°	Low 50°	Low 50°
High 72°	High 71°	High 67°	High 73°	High 73°

Mostly Cloudy 9% Rain	Overcast 25% Rain	Overcast 59% Rain	Mostly Cloudy 33% Rain	Partly Cloudy 27% Rain

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