Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Light Snow

14°F

-10°C

Humidity 92%
Wind Speed NW 12 mph
Barometer 29.95 in
Dewpoint 12°F (-11°C)
Visibility 2.50 mi
Wind Chill0°F (-18°C)
Last update 17 Jan 12:15 pm CST
Extended Forecast for

3 Miles ENE Castalia IA

  • This Afternoon

    This Afternoon: Snow likely, mainly before 2pm.  Cloudy, with a high near 15. Wind chill values as low as -5. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.

    High: 15 °F

    Snow Likely
    and Blustery

  • Tonight

    Tonight: Mostly cloudy, with a low around 1. Wind chill values as low as -13. Northwest wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow, mainly after 9am.  High near 18. Wind chill values as low as -10. Blustery, with a southwest wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 18 °F

    Chance Snow
    then Snow and
    Blustery

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 7pm.  Cloudy, then gradually becoming partly cloudy, with a low around -6. Wind chill values as low as -28. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 36 mph.

    Low: -6 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 2. Blustery, with a northwest wind 9 to 17 mph, with gusts as high as 32 mph.

    High: 2 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -5. Southwest wind 5 to 7 mph.

    Low: -5 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 18. Southwest wind 5 to 7 mph.

    High: 18 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow, mainly before midnight.  Mostly cloudy, with a low around 11. South wind 6 to 9 mph becoming west after midnight.

    Low: 11 °F

    Chance Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 20. West wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 20 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Snow likely, mainly before 2pm. Cloudy, with a high near 15. Wind chill values as low as -5. Blustery, with a northwest wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Tonight
Mostly cloudy, with a low around 1. Wind chill values as low as -13. Northwest wind 8 to 14 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Sunday
Snow, mainly after 9am. High near 18. Wind chill values as low as -10. Blustery, with a southwest wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 20 percent chance of snow before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around -6. Wind chill values as low as -28. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 36 mph.
M.L.King Day
Mostly sunny and cold, with a high near 2. Blustery, with a northwest wind 9 to 17 mph, with gusts as high as 32 mph.
Monday Night
Partly cloudy, with a low around -5. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 18. Southwest wind 5 to 7 mph.
Tuesday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 11. South wind 6 to 9 mph becoming west after midnight.
Wednesday
Partly sunny, with a high near 20. West wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 2. West wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 17. West wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 5. Southwest wind around 6 mph.
Friday
Partly sunny, with a high near 16. Northwest wind 6 to 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Castalia IA
 43.12°N 91.62°W
12:31 pm CST Jan 17, 2026
12pm CST Jan 17, 2026-6pm CST Jan 23, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database