LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

2:55 AM CDT OCT 16, 2025
Overcast
59°F
Feels Like: 58°F
Dewpoint: 52°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: E at 6 mph
Pressure: 30.17 inches
Last 72 hours

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LACON, IL 61540
Weather Forecast

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REST OF TONIGHT
Mostly cloudy. Near steady temperature in the upper 50s. East winds 5 to 10 mph.
THURSDAY
Partly sunny. Highs in the mid 70s. Southeast winds 5 to 10 mph.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph.
FRIDAY
Mostly sunny. Highs in the lower 80s. South winds 10 to 15 mph with gusts up to 25 mph.
FRIDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with showers likely after midnight. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
SATURDAY
Showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 80 percent.
SATURDAY NIGHT
Showers likely with a chance of thunderstorms. Much cooler with lows in the upper 40s. Chance of rain 70 percent.
SUNDAY
Mostly sunny. A chance of showers in the morning. Much cooler with highs in the lower 60s. Chance of rain 30 percent.
SUNDAY NIGHT AND MONDAY
Clear. Lows in the lower 40s. Highs in the upper 60s.
MONDAY NIGHT AND TUESDAY
Partly cloudy. A 30 percent chance of showers. Lows in the upper 40s. Highs in the mid 60s.
TUESDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the lower 40s.
WEDNESDAY
Sunny. Highs in the lower 60s.

Visible Weather Satellite
LACON, IL 61540
Infrared Weather Satellite
LACON, IL 61540
NEXRAD Weather Radar
LACON, IL 61540

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created  7:00 PM CDT 10/15/2025
Thursday
16 OCT 2025
LACON, IL 61540 weather forecast Day 1, 0 hours 1 AM 56° 55° Mostly Cloudy 7%

0% Thunder
( 4% severe)
ENE   6 86% 52°
Low 54° LACON, IL 61540 weather forecast Day 1, 3 hours 4 AM 55° 54° Mostly Cloudy E   6 86% 51°
High 75° LACON, IL 61540 weather forecast Day 1, 6 hours 7 AM 55° 54° Mostly Cloudy 6%

0% Thunder
( 5% severe)
E   5 83% 50°

Decreasing Clouds



LACON, IL 61540 weather forecast Day 1, 9 hours 10 AM 62° 62° Mostly Cloudy ESE   6 67% 51°
LACON, IL 61540 weather forecast Day 1, 12 hours 1 PM 70° 70° Mostly Cloudy 5%

0% Thunder
( 1% severe)
ESE   7 51% 51°
LACON, IL 61540 weather forecast Day 1, 15 hours 4 PM 74° 74° Clear SE   7 46% 52°
LACON, IL 61540 weather forecast Day 1, 18 hours 7 PM 65° 65° Clear 6%

0% Thunder
( 2% severe)
ESE   6 65% 53°
LACON, IL 61540 weather forecast Day 1, 21 hours 10 PM 63° 63° Clear SE   6 67% 52°
Friday
17 OCT 2025
LACON, IL 61540 weather forecast Day 2, 0 hours 1 AM 61° 60° Partly Cloudy 9%

0% Thunder
( 2% severe)
SSE   7 72% 52°
Low 58° LACON, IL 61540 weather forecast Day 2, 3 hours 4 AM 60° 59° Partly Cloudy S   7 72% 51°
High 79° LACON, IL 61540 weather forecast Day 2, 6 hours 7 AM 59° 58° Mostly Cloudy 3%

0% Thunder
( 2% severe)
S   7 75% 51°

Mostly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 10 AM 67° 67° Mostly Cloudy S   9 56% 51°
LACON, IL 61540 weather forecast Day 2, 12 hours 1 PM 75° 75° Mostly Cloudy 1%

0% Thunder
( 1% severe)
S   10 43% 51°
LACON, IL 61540 weather forecast Day 2, 15 hours 4 PM 78° 79° Mostly Cloudy S   12 39% 51°
LACON, IL 61540 weather forecast Day 2, 18 hours 7 PM 70° 70° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 13% severe)
S   8 55% 53°
LACON, IL 61540 weather forecast Day 2, 21 hours 10 PM 67° 67° Partly Cloudy S   10 59% 52°

LACON/MARSHALL CNTY, IL extended weather forecast

Saturday
18 OCT 2025
Sunday
19 OCT 2025
Monday
20 OCT 2025
Tuesday
21 OCT 2025
Wednesday
22 OCT 2025
Low 57° Low 50° Low 38° Low 46° Low 39°
High 75° High 61° High 71° High 60° High 52°
LACON, IL 61540 weather forecast Day 3 LACON, IL 61540 weather forecast Day 4 LACON, IL 61540 weather forecast Day 5 LACON, IL 61540 weather forecast Day 6 LACON, IL 61540 weather forecast Day 7
Overcast
88% Rain
Mostly Cloudy
89% Rain
Clear
3% Rain
Partly Cloudy
59% Rain
Mostly Cloudy
25% Rain
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