Weather Alert
Castleton Weather Warning NWS WEATHER ALERT FOR THE CASTLETON, IL AREA - Issued: 530 AM CDT Fri Sep 4 2026 Castleton Weather Warning

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Castleton, IL Weather - Hour by Hour Forecast

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Castleton, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 84°F29°C, dew point 71°F22°C, humidity 64%. Wind direction is WSW at 5 mph8 km/h with visibility of 10 mi16 km. Barometric pressure is 29.95 in1014 mb.
Rest of Today - Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 104 this afternoon... Full Forecast
Tonight - Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the lowe.. Full Forecast

Castleton Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 04
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Castleton, IL Hourly Weather - Clear - 9:00 AM Castleton, IL Hourly Weather - Clear - 10:00 AM Castleton, IL Hourly Weather - Clear - 11:00 AM Castleton, IL Hourly Weather - Clear - 12:00 PM Castleton, IL Hourly Weather - Clear - 1:00 PM Castleton, IL Hourly Weather - Clear - 2:00 PM Castleton, IL Hourly Weather - Clear - 3:00 PM Castleton, IL Hourly Weather - Clear - 4:00 PM Castleton, IL Hourly Weather - Clear - 5:00 PM Castleton, IL Hourly Weather - Clear - 6:00 PM Castleton, IL Hourly Weather - Clear - 7:00 PM Castleton, IL Hourly Weather - Clear - 8:00 PM Castleton, IL Hourly Weather - Mostly Clear - 9:00 PM Castleton, IL Hourly Weather - Mostly Clear - 10:00 PM Castleton, IL Hourly Weather - Mostly Clear - 11:00 PM Castleton, IL Hourly Weather - Mostly Cloudy - 12:00 AM Castleton, IL Hourly Weather - Mostly Cloudy - 1:00 AM Castleton, IL Hourly Weather - Mostly Cloudy - 2:00 AM Castleton, IL Hourly Weather - Mostly Cloudy - 3:00 AM Castleton, IL Hourly Weather - Mostly Cloudy - 4:00 AM Castleton, IL Hourly Weather - Mostly Cloudy - 5:00 AM Castleton, IL Hourly Weather - Mostly Clear - 6:00 AM Castleton, IL Hourly Weather - Mostly Clear - 7:00 AM Castleton, IL Hourly Weather - Mostly Clear - 8:00 AM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Clear Mostly Clear Mostly Clear
82°F28°C 87°F31°C 90°F32°C 94°F34°C 97°F36°C 97°F36°C 98°F37°C 98°F37°C 96°F36°C 93°F34°C 91°F33°C 88°F31°C 84°F29°C 81°F27°C 80°F27°C 78°F26°C 77°F25°C 76°F24°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 74°F23°C
- - - - - - - - - - - - - - - - - Rain Rain Rain Rain Rain Rain -
5% 5% 5% 5% 5% 1% 1% 1% 1% 1% 1% 3% 3% 3% 3% 3% 3% 26% 26% 26% 26% 26% 26% 4%
71°F22°C 73°F23°C 73°F23°C 72°F22°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C 72°F22°C 73°F23°C 74°F23°C 74°F23°C 74°F23°C 74°F23°C 73°F23°C 72°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 69°F21°C
69% 63% 58% 49% 45% 45% 42% 42% 46% 52% 58% 63% 72% 79% 79% 82% 82% 82% 87% 87% 90% 87% 90% 84%
SW SSW SSW SSW SSW SSW SSW SSW SSE SE E E ESE SE SE SSE SSE ESE NE N N N N N
6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 0 mph 0 mph 0 mph 0 mph 0 mph 0 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 6 mi10 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KC75 model statistics.

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Prob Precip % = Probability of Precipitation.

Castleton 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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