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.

Overcast

7°F

-14°C

Humidity 92%
Wind Speed NW 12 mph
Barometer 30.08 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 17 Jan 7:15 pm CST
Extended Forecast for

Dorchester IA

Cold Weather Advisory January 18, 11:00pm until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 2. Wind chill values as low as -11. Northwest wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 23 mph.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow, mainly after noon. High near 18. Wind chill values as low as -8. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 18 °F

    Chance Snow
    then Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 8pm. Patchy blowing snow between 9pm and 10pm. Cloudy, then gradually becoming partly cloudy, with a low around -6. Wind chill values as low as -27. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 36 mph.

    Low: -6 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 4. Wind chill values as low as -26. Blustery, with a northwest wind 7 to 16 mph, with gusts as high as 31 mph.

    High: 4 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. West wind 3 to 6 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 11. Light and variable wind becoming west around 6 mph after midnight.

    Low: 11 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow. Partly sunny, with a high near 20. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 20 °F

    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 3. West wind 5 to 8 mph, with gusts as high as 18 mph.

    Low: 3 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 2. Wind chill values as low as -11. Northwest wind 7 to 13 mph becoming southwest after midnight. Winds could gust as high as 23 mph.
Sunday
Snow, mainly after noon. High near 18. Wind chill values as low as -8. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 20 percent chance of snow before 8pm. Patchy blowing snow between 9pm and 10pm. Cloudy, then gradually becoming partly cloudy, with a low around -6. Wind chill values as low as -27. Blustery, with a northwest wind 14 to 20 mph, with gusts as high as 36 mph.
M.L.King Day
Mostly sunny and cold, with a high near 4. Wind chill values as low as -26. Blustery, with a northwest wind 7 to 16 mph, with gusts as high as 31 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 11. Light and variable wind becoming west around 6 mph after midnight.
Wednesday
A 20 percent chance of snow. Partly sunny, with a high near 20. West wind 6 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 3. West wind 5 to 8 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 17. West wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 5. Southwest wind 3 to 5 mph.
Friday
Partly sunny, with a high near 17. Northwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around -5. North wind around 6 mph.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 6. North wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dorchester IA
 43.47°N 91.52°W
Last Update:
6:21 pm CST Jan 17, 2026
Forecast Valid:
7pm CST Jan 17, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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