Weather Alert
Decatur Weather Warning NWS WEATHER ALERT FOR THE DECATUR, IL AREA - Issued: 304 PM CDT Thu Aug 13 2026 Decatur Weather Warning

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Decatur, IL Weather - Hour by Hour Forecast

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Decatur, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 77°F25°C, dew point 74°F23°C, humidity 90%. Wind direction is S at 7 mph11 km/h with visibility of 10 mi16 km. Barometric pressure is 29.93 in1014 mb.
Rest of Tonight - Mostly cloudy. A slight chance of showers and thunderstorms late this evening, then a chance of showers and thunderstorms. Near st.. Full Forecast
Friday - Mostly sunny. A chance of showers and thunderstorms in the morning. Humid with highs around 90. Southeast winds 5 to 10 mph. Chanc.. Full Forecast

Decatur Hourly Weather

24 Hour Forecast Scroll
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Decatur, IL Hourly Weather - Partly Cloudy - 10:00 PM Decatur, IL Hourly Weather - Partly Cloudy - 11:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 12:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 1:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 2:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 3:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 4:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 5:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 6:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 7:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 8:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 9:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 10:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 11:00 AM Decatur, IL Hourly Weather - Mostly Cloudy - 12:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 1:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 2:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 3:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 4:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 5:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 6:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 7:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 8:00 PM Decatur, IL Hourly Weather - Mostly Cloudy - 9:00 PM
Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy
81°F27°C 80°F27°C 80°F27°C 79°F26°C 78°F26°C 77°F25°C 76°F24°C 76°F24°C 75°F24°C 75°F24°C 78°F26°C 82°F28°C 85°F29°C 87°F31°C 90°F32°C 92°F33°C 92°F33°C 93°F34°C 93°F34°C 91°F33°C 89°F32°C 87°F31°C 84°F29°C 82°F28°C
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4% 4% 4% 4% 16% 16% 16% 16% 16% 16% 6% 6% 6% 6% 6% 6% 2% 2% 2% 2% 2% 2% 4% 4%
74°F23°C 73°F23°C 73°F23°C 72°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 70°F21°C 71°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°F21°C 70°F21°C 70°F21°C 71°F22°C
79% 79% 79% 79% 79% 82% 82% 82% 84% 84% 77% 69% 63% 57% 52% 47% 47% 44% 44% 49% 52% 57% 63% 69%
E E ESE ESE SE SE SSE SSE S S SSE SW SSW SSW SSW SSW SSW SSW SSW SSW SSW SSW SSW SSW
7 mph 7 mph 8 mph 8 mph 8 mph 7 mph 7 mph 7 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 11 mph 11 mph 11 mph 9 mph 9 mph 9 mph 5 mph 5 mph 5 mph 4 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
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POP = Probability of Precipitation. ** Indicates missing data/values from KDEC model statistics.

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Prob Precip % = Probability of Precipitation.

Decatur 36 Hour Forecast

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

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