Weather Alert
Decatur Weather Warning NWS WEATHER ALERT FOR THE DECATUR, IA AREA - Issued: 241 PM CDT Thu Sep 17 2026 Decatur Weather Warning

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Decatur, IA Weather - Hour by Hour Forecast

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Decatur, IA Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Cloudy. Temperature is 76°F24°C, dew point 73°F23°C, humidity 90%. Wind direction is N at 5 mph8 km/h with visibility of 10 mi16 km. Barometric pressure is 30.19 in1022 mb.
Tonight - Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 60s. Nort.. Full Forecast
Friday - Cloudy in the morning, then becoming mostly sunny. Patchy fog in the morning. Humid with highs in the mid 80s. East winds 5 to 10 .. Full Forecast

Decatur Hourly Weather

24 Hour Forecast Scroll
Thu, Sep 17
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Decatur, IA Hourly Weather - Mostly Cloudy - 7:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 8:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 9:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 10:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 11:00 PM Decatur, IA Hourly Weather - Cloudy - 12:00 AM Decatur, IA Hourly Weather - Cloudy - 1:00 AM Decatur, IA Hourly Weather - Cloudy - 2:00 AM Decatur, IA Hourly Weather - Cloudy - 3:00 AM Decatur, IA Hourly Weather - Cloudy - 4:00 AM Decatur, IA Hourly Weather - Cloudy - 5:00 AM Decatur, IA Hourly Weather - Cloudy - 6:00 AM Decatur, IA Hourly Weather - Cloudy - 7:00 AM Decatur, IA Hourly Weather - Cloudy - 8:00 AM Decatur, IA Hourly Weather - Cloudy - 9:00 AM Decatur, IA Hourly Weather - Cloudy - 10:00 AM Decatur, IA Hourly Weather - Cloudy - 11:00 AM Decatur, IA Hourly Weather - Mostly Cloudy - 12:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 1:00 PM Decatur, IA Hourly Weather - Mostly Cloudy - 2:00 PM Decatur, IA Hourly Weather - Cloudy - 3:00 PM Decatur, IA Hourly Weather - Cloudy - 4:00 PM Decatur, IA Hourly Weather - Cloudy - 5:00 PM Decatur, IA Hourly Weather - Cloudy - 6:00 PM
Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy
81°F27°C 79°F26°C 77°F25°C 75°F24°C 74°F23°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 70°F21°C 71°F22°C 72°F22°C 75°F24°C 77°F25°C 80°F27°C 80°F27°C 81°F27°C 81°F27°C 80°F27°C 78°F26°C
- - - - - - - Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain - - - - -
9% 20% 20% 20% 20% 20% 20% 56% 56% 56% 56% 56% 56% 37% 37% 37% 37% 37% 37% 9% 9% 9% 9% 9%
73°F23°C 72°F22°C 71°F22°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 68°F20°C 68°F20°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 68°F20°C 69°F21°C
77% 79% 82% 84% 84% 84% 84% 87% 84% 87% 90% 87% 90% 87% 87% 84% 79% 74% 69% 69% 65% 65% 67% 74%
SSE SSE SSE SSE SSE SE SE SE SE SE SE SE SE SSE S S S S SSE SW SW SW SSE E
7 mph 7 mph 7 mph 7 mph 7 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 8 mph 8 mph 8 mph 9 mph 9 mph 9 mph 7 mph 7 mph 7 mph 5 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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Temperature
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POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KLWD 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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