LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

3:55 PM CDT AUG 26, 2025
Scattered Clouds
72°F
Feels Like: 72°F
Dewpoint: 46°F
Rel. Hum.: 39%
Visibility: 10 miles
Wind: WNW at 5 mph
Pressure: 30.23 inches
Last 72 hours

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LACON, IL 61540
Weather Forecast

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Snow Depth pages
THIS AFTERNOON
Mostly sunny. Near steady temperature in the lower 70s. Northwest winds 5 to 10 mph.
TONIGHT
Mostly clear. Lows in the upper 40s. Northwest winds around 5 mph, becoming southwest after midnight.
WEDNESDAY
Sunny in the morning, then becoming partly sunny. Highs in the upper 70s. Southwest winds 5 to 10 mph.
WEDNESDAY NIGHT
Partly cloudy. Not as cool with lows in the upper 50s. South winds around 5 mph.
THURSDAY
Mostly sunny. Highs in the lower 80s. West winds around 5 mph.
THURSDAY NIGHT THROUGH FRIDAY NIGHT
Mostly clear. Lows in the lower 50s. Highs in the mid 70s.
SATURDAY THROUGH SUNDAY
Partly cloudy. Highs in the upper 70s. Lows in the lower 50s.
SUNDAY NIGHT AND LABOR DAY
Mostly clear. Lows in the mid 50s. Highs around 80.

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 AM CDT  8/26/2025
Tuesday
26 AUG 2025
LACON, IL 61540 weather forecast Day 1, 12 hours 1 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 2% severe)
NW   7 42% 46°
High 72° LACON, IL 61540 weather forecast Day 1, 15 hours 4 PM 71° 71° Partly Cloudy NW   7 42% 47°
Partly Cloudy



LACON, IL 61540 weather forecast Day 1, 18 hours 7 PM 68° 68° Clear 0%

0% Thunder
( 1% severe)
NNW   1 53% 50°
LACON, IL 61540 weather forecast Day 1, 21 hours 10 PM 57° 58° Clear   CALM 75% 49°
Wednesday
27 AUG 2025
LACON, IL 61540 weather forecast Day 2, 0 hours 1 AM 54° 54° Clear 0%

0% Thunder
( 1% severe)
  CALM 80% 48°
Low 50° LACON, IL 61540 weather forecast Day 2, 3 hours 4 AM 52° 52° Partly Cloudy   CALM 86% 48°
High 75° LACON, IL 61540 weather forecast Day 2, 6 hours 7 AM 52° 52° Partly Cloudy 1%

0% Thunder
( 1% severe)
  CALM 86% 48°

Partly Cloudy



LACON, IL 61540 weather forecast Day 2, 9 hours 10 AM 68° 68° Partly Cloudy SW   2 57% 52°
LACON, IL 61540 weather forecast Day 2, 12 hours 1 PM 73° 73° Partly Cloudy 7%

0% Thunder
( 9% severe)
WSW   6 44% 50°
LACON, IL 61540 weather forecast Day 2, 15 hours 4 PM 73° 73° Mostly Cloudy W   5 48% 52°
LACON, IL 61540 weather forecast Day 2, 18 hours 7 PM 70° 70° Partly Cloudy 1%

0% Thunder
( 12% severe)
SW   2 57% 54°
LACON, IL 61540 weather forecast Day 2, 21 hours 10 PM 62° 63° Mostly Cloudy SSE   2 72% 53°
Thursday
28 AUG 2025
LACON, IL 61540 weather forecast Day 3, 0 hours 1 AM 61° 62° Partly Cloudy 4%

0% Thunder
( 7% severe)
S   3 75% 53°
Low 58° LACON, IL 61540 weather forecast Day 3, 3 hours 4 AM 60° 60° Mostly Cloudy SSW   5 78% 53°
High 78° LACON, IL 61540 weather forecast Day 3, 6 hours 7 AM 60° 61° Mostly Cloudy 7%

0% Thunder
( 8% severe)
SW   3 78% 53°

Partly Cloudy



LACON, IL 61540 weather forecast Day 3, 9 hours 10 AM 70° 70° Partly Cloudy W   5 63% 57°
LACON, IL 61540 weather forecast Day 3, 15 hours 1 PM 75° 75° Partly Cloudy 6%

0% Thunder
( 22% severe)
W   6 55% 58°
LACON, IL 61540 weather forecast Day 3, 18 hours 4 PM 77° 79° Partly Cloudy WNW   6 52% 58°
LACON, IL 61540 weather forecast Day 3, 21 hours 7 PM 73° 73° Partly Cloudy     N   3 62% 59°

LACON/MARSHALL CNTY, IL extended weather forecast

Friday
29 AUG 2025
Saturday
30 AUG 2025
Sunday
31 AUG 2025
Monday
1 SEP 2025
Tuesday
2 SEP 2025
Low 55° Low 54° Low 56° Low 56° Low 58°
High 76° High 80° High 79° High 79° High 80°
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 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
14% Rain
Partly Cloudy
18% Rain
Mostly Cloudy
27% Rain
Mostly Cloudy
25% Rain
Partly Cloudy
31% Rain
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