CASTLETON, IL 61426 Weather Forecast & Current Conditions

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61426 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
LACON/MARSHALL CNTY, IL Current Weather
11:35 PM CDT JUN 8, 2026
Overcast 72°F
Feels Like:	72°F
Dewpoint:	70°F
Rel. Hum.:	93%
Visibility:	10 miles
Wind:	S at 5 mph
Pressure:	29.93 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

61426 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	CASTLETON, IL 61426 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TONIGHT
Mostly cloudy with a slight chance of thunderstorms. A chance of showers late this evening, then a slight chance of showers. Some thunderstorms may produce heavy rainfall. Lows in the upper 60s. South winds around 5 mph. Chance of rain 50 percent.

TUESDAY
Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Warmer with highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 20 percent.

TUESDAY NIGHT
Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.

WEDNESDAY
Sunny with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph.

WEDNESDAY NIGHT
Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Lows around 70. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 80 percent.

THURSDAY
A chance of showers in the morning, then showers with thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 80 percent.

THURSDAY NIGHT
Showers likely with a chance of thunderstorms in the evening. Lows in the lower 60s. Chance of rain 70 percent.

FRIDAY
Sunny. Highs in the mid 80s.

FRIDAY NIGHT
Clear. Lows in the lower 60s.

SATURDAY
Sunny. Highs in the upper 80s.

SATURDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 40 percent.

SUNDAY
A chance of showers in the morning. Mostly sunny. Highs in the lower 80s. Chance of rain 40 percent.

SUNDAY NIGHT
Partly cloudy. Lows in the upper 50s.

61426 WEATHER SATELLITE LOOPS

Visible Weather Satellite
CASTLETON, IL 61426

Infrared Weather Satellite
CASTLETON, IL 61426

61426 WEATHER RADAR LOOP

NEXRAD Weather Radar
CASTLETON, IL 61426

MOS COMPUTER WEATHER FORECAST

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created 7:00 AM CDT 6/ 8/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
8 JUN 2026

1 PM

78°

80°

Mostly Cloudy

86%
RAIN
***

0% Thunder
( 70% severe)

SSE 10

74%

69°

High 81°

4 PM

80°

83°

Mostly Cloudy

S 9

69%

69°

Mostly Cloudy

Rain Likely

7 PM

78°

80°

Mostly Cloudy

83%
RAIN
***

0% Thunder
( 39% severe)

S 7

71%

68°

10 PM

74°

74°

Mostly Cloudy

S 3

76%

66°

Tuesday
9 JUN 2026

1 AM

72°

72°

Partly Cloudy

13%
RAIN
.01–.1 in

0% Thunder
( 10% severe)

S 3

79%

65°

Low 67°

4 AM

71°

71°

Mostly Cloudy

SSW 5

84%

66°

High 89°

7 AM

71°

71°

Mostly Cloudy

4%

0% Thunder
( 17% severe)

WSW 5

84%

66°

Mostly Cloudy

10 AM

78°

80°

Mostly Cloudy

W 6

74%

69°

1 PM

85°

90°

Partly Cloudy

15%
RAIN
<.01 in

0% Thunder
( 28% severe)

W 7

61%

70°

4 PM

89°

94°

Partly Cloudy

W 8

54%

70°

7 PM

87°

93°

Partly Cloudy

32%
RAIN
.01–.1 in

0% Thunder
( 44% severe)

W 5

59%

71°

10 PM

79°

82°

Mostly Cloudy

S 5

74%

70°

Wednesday
10 JUN 2026

1 AM

77°

79°

Partly Cloudy

39%
RAIN
1–2 in

0% Thunder
( 39% severe)

SSW 7

76%

69°

Low 72°

4 AM

75°

75°

Partly Cloudy

SSW 8

82%

69°

High 92°

7 AM

75°

75°

Partly Cloudy

1%

0% Thunder
( 16% severe)

SSW 9

82%

69°

Partly Cloudy

10 AM

83°

87°

Partly Cloudy

SSW 13

65%

70°

1 PM

89°

94°

Partly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 32% severe)

SSW 14

54%

70°

4 PM

92°

97°

Partly Cloudy

SSW 16

47%

69°

7 PM

89°

93°

Partly Cloudy

SSW 15

50%

68°


LACON/MARSHALL CNTY, IL extended weather forecast
Thursday 11 JUN 2026	Friday 12 JUN 2026	Saturday 13 JUN 2026	Sunday 14 JUN 2026	Monday 15 JUN 2026
Low 71°	Low 65°	Low 60°	Low 56°	Low 58°
High 86°	High 80°	High 81°	High 78°	High 72°

Mostly Cloudy 78% Rain	Mostly Cloudy 69% Rain	Partly Cloudy 23% Rain	Partly Cloudy 20% Rain	Mostly Cloudy 53% Rain

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