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
6:15 PM CDT AUG 22, 2026
Clear 79°F
Feels Like:	80°F
Dewpoint:	55°F
Rel. Hum.:	44%
Visibility:	10 miles
Wind:	NNW at 7 mph
Pressure:	29.99 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 2026 Hurricanes	LACON, IL 61540 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.

SUNDAY
Sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph.

SUNDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s. Northwest winds around 5 mph in the evening, becoming light and variable.

MONDAY
Mostly sunny. Highs in the upper 70s. Light and variable winds, becoming northwest around 5 mph in the afternoon.

MONDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the upper 50s. Light and variable winds.

TUESDAY THROUGH WEDNESDAY
Partly cloudy. Highs in the lower 80s. Lows in the mid 60s.

WEDNESDAY NIGHT THROUGH FRIDAY
Mostly clear. Lows in the lower 60s. Highs in the lower 80s.

FRIDAY NIGHT AND SATURDAY
Partly cloudy. Lows in the lower 60s. Highs in the lower 80s.

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 8/22/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

TIME
CDT

TEMP
(deg. F)

FEELS
LIKE

CLOUD
COVER

PRECIP
PROB.

THUNDER
PROB.

WIND
dir./mph

REL
HUM

DEWPT
(deg. F)

Saturday
22 AUG 2026

1 PM

77°

79°

Clear

0% Thunder
( 23% severe)

NW 10

60%

62°

High 80°

4 PM

79°

80°

Clear

NW 10

56%

62°

Clear

7 PM

75°

Clear

0% Thunder
( 2% severe)

NW 6

60%

60°

10 PM

67°

Clear

NW 3

75%

59°

Sunday
23 AUG 2026

1 AM

64°

66°

Clear

0% Thunder
( 1% severe)

NW 1

78%

57°

Low 58°

4 AM

61°

62°

Clear

NNW 1

84%

56°

High 77°

7 AM

59°

60°

Clear

0% Thunder
( 1% severe)

CALM

87%

55°

Partly Cloudy

10 AM

70°

Clear

N 1

63%

57°

1 PM

74°

Partly Cloudy

0% Thunder
( 2% severe)

NW 7

51%

55°

4 PM

76°

78°

Partly Cloudy

NW 7

48%

55°

7 PM

72°

Partly Cloudy

0% Thunder
( 1% severe)

CALM

61%

58°

10 PM

65°

Partly Cloudy

CALM

73%

56°

Monday
24 AUG 2026

1 AM

62°

63°

Partly Cloudy

0% Thunder
( 1% severe)

CALM

78%

55°

Low 56°

4 AM

59°

60°

Partly Cloudy

CALM

87%

55°

High 77°

7 AM

58°

59°

Partly Cloudy

0% Thunder
( 2% severe)

CALM

90%

55°

Partly Cloudy

10 AM

70°

Partly Cloudy

CALM

66%

58°

1 PM

74°

Partly Cloudy

0% Thunder
( 1% severe)

CALM

53%

56°

4 PM

76°

78°

Partly Cloudy

CALM

50%

56°

7 PM

73°

Partly Cloudy

CALM

62%

59°


LACON/MARSHALL CNTY, IL extended weather forecast
Tuesday 25 AUG 2026	Wednesday 26 AUG 2026	Thursday 27 AUG 2026	Friday 28 AUG 2026	Saturday 29 AUG 2026
Low 61°	Low 66°	Low 61°	Low 59°	Low 60°
High 84°	High 85°	High 79°	High 82°	High 82°

Partly Cloudy 27% Rain	Partly Cloudy 42% Rain	Partly Cloudy 21% Rain	Partly Cloudy 25% Rain	Partly Cloudy 32% Rain

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LACON, IL 61540 Weather Forecast & Current Conditions

LACON/MARSHALL CNTY, IL Current Weather

LACON, IL 61540 Weather Forecast

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

LACON/MARSHALL CNTY, IL extended weather forecast

LACON/MARSHALL CNTY, IL
Current Weather

LACON, IL 61540
Weather Forecast