National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Fair

82°F

28°C

Humidity 62%
Wind Speed S 8 G 15 mph
Barometer 30.03 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 7 Aug 5:35 pm CDT
Extended Forecast for

4 Miles NE Castalia IA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. South wind around 8 mph.

    High: 83 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 69. Southeast wind around 6 mph.

    Low: 69 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Heat index values as high as 96. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind around 11 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 68. South wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    T-storms
    Likely then
    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 3 to 6 mph.

    High: 82 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Light southwest wind. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers. Mostly sunny, with a high near 81. Southwest wind 3 to 5 mph.

    High: 81 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. South wind around 8 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 69. Southeast wind around 6 mph.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Heat index values as high as 96. South wind 6 to 14 mph, with gusts as high as 22 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind around 11 mph, with gusts as high as 21 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind around 11 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm after 10pm. Mostly cloudy, with a low around 68. South wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southwest wind 3 to 6 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Light southwest wind. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 81. Southwest wind 3 to 5 mph.
Monday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 63. Light southwest wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81. Southwest wind 3 to 6 mph.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63. Light south wind.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81. South wind 3 to 7 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. South wind 3 to 5 mph.
Thursday
A 20 percent chance of showers. Sunny, with a high near 84. South wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Castalia IA
 43.17°N 91.62°W
Last Update:
4:44 pm CDT Aug 7, 2025
Forecast Valid:
5pm CDT Aug 7, 2025-6pm CDT Aug 14, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation