Fort Atkinson, IA Weather & Growing Conditions
This Afternoon
51°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 51, with temperatures falling to around 49 in the afternoon. Southwest wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 51°F | Chance Rain Showers | 16 mph SW | 26% |
| Tonight | 44°F | Rain Showers | 12 to 15 mph W | 80% |
| Thursday | 49°F | Chance Rain Showers | 12 to 17 mph NW | 45% |
| Thursday Night | 34°F | Mostly Cloudy | 9 to 14 mph N | 9% |
| Friday | 45°F | Mostly Sunny | 7 to 12 mph N | 0% |
| Friday Night | 26°F | Mostly Clear | 7 mph NW | 0% |
| Saturday | 50°F | Mostly Sunny | 5 to 8 mph W | 0% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 mph W | 1% |
| Sunday Night | 36°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 61°F | Sunny | 3 to 12 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 59°F | Sunny | 3 mph NW | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 2 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Atkinson, IA
Last spring frost
May 3
First fall frost
Oct 7
Growing season
157 days
Hardiness zone
5a
Explore more for Fort Atkinson, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Decorah, Ia (14.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.