Weather Alert
Lake Jacksonville Weather Warning NWS WEATHER ALERT FOR THE LAKE JACKSONVILLE, IL AREA - Issued: 626 AM CDT Tue Sep 1 2026 Lake Jacksonville Weather Warning

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Lake Jacksonville, IL Weather - Hour by Hour Forecast

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Lake Jacksonville, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 90°F33°C, dew point 70°F21°C, humidity 51%. Wind direction is WSW at 3 mph5 km/h with visibility of 10 mi16 km. Barometric pressure is 30.04 in1017 mb.
Rest of Today - Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 104 this afternoon... Full Forecast
Tonight - Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph... Full Forecast

Lake Jacksonville Hourly Weather

24 Hour Forecast Scroll
Tue, Sep 01
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Lake Jacksonville, IL Hourly Weather - Clear - 12:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 1:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 2:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 3:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 4:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 5:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 6:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 7:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 8:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 9:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 10:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 11:00 PM Lake Jacksonville, IL Hourly Weather - Clear - 12:00 AM Lake Jacksonville, IL Hourly Weather - Clear - 1:00 AM Lake Jacksonville, IL Hourly Weather - Clear - 2:00 AM Lake Jacksonville, IL Hourly Weather - Mostly Clear - 3:00 AM Lake Jacksonville, IL Hourly Weather - Mostly Clear - 4:00 AM Lake Jacksonville, IL Hourly Weather - Mostly Clear - 5:00 AM Lake Jacksonville, IL Hourly Weather - Partly Cloudy - 6:00 AM Lake Jacksonville, IL Hourly Weather - Partly Cloudy - 7:00 AM Lake Jacksonville, IL Hourly Weather - Partly Cloudy - 8:00 AM Lake Jacksonville, IL Hourly Weather - Clear - 9:00 AM Lake Jacksonville, IL Hourly Weather - Clear - 10:00 AM Lake Jacksonville, IL Hourly Weather - Clear - 11:00 AM
Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Clear Clear Clear
95°F35°C 98°F37°C 98°F37°C 98°F37°C 98°F37°C 95°F35°C 93°F34°C 90°F32°C 87°F31°C 85°F29°C 82°F28°C 80°F27°C 79°F26°C 77°F25°C 76°F24°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 77°F25°C 83°F28°C 89°F32°C 92°F33°C
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4% 4% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 2% 2% 2% 2% 2% 2% 3% 3% 3% 3%
67°F19°C 65°F18°C 64°F18°C 64°F18°C 63°F17°C 64°F18°C 65°F18°C 66°F19°C 67°F19°C 69°F21°C 70°F21°C 69°F21°C 68°F20°C 67°F19°C 66°F19°C 66°F19°C 65°F18°C 64°F18°C 64°F18°C 63°F17°C 64°F18°C 66°F19°C 67°F19°C 67°F19°C
40% 34% 33% 33% 32% 36% 40% 45% 52% 59% 67% 69% 69% 71% 71% 76% 76% 76% 76% 76% 64% 57% 48% 44%
SSW SW SW SSE S S S SSE SSE SSE SSE SSE S S S S S S S SSE SW SW SW SW
4 mph 4 mph 4 mph 6 mph 6 mph 6 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 4 mph 4 mph 4 mph 9 mph 9 mph 9 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 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
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Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KIJX model statistics.

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Prob Precip % = Probability of Precipitation.

Lake Jacksonville 36 Hour Forecast

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

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