Afton, IA Weather & Growing Conditions
Tonight
45°F
Slight Chance Rain Showers then Cloudy
A slight chance of rain showers before 10pm. Cloudy, with a low around 45. Northwest wind 12 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Slight Chance Rain Showers then Cloudy | 12 to 15 mph NW | 17% |
| Wednesday | 51°F | Mostly Cloudy | 13 to 16 mph W | 14% |
| Wednesday Night | 41°F | Mostly Cloudy | 12 mph W | 10% |
| Thursday | 52°F | Chance Rain Showers | 10 mph WNW | 39% |
| Thursday Night | 39°F | Mostly Cloudy | 9 mph NNW | 12% |
| Friday | 52°F | Partly Sunny | 5 to 8 mph N | 4% |
| Friday Night | 34°F | Mostly Cloudy | 3 mph NNW | 0% |
| Saturday | 56°F | Mostly Sunny | 1 to 6 mph WSW | 2% |
| Saturday Night | 37°F | Mostly Clear | 6 mph W | 4% |
| Sunday | 62°F | Sunny | 6 mph W | 5% |
| Sunday Night | 40°F | Mostly Clear | 7 mph SW | 1% |
| Monday | 65°F | Sunny | 7 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 7 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 7 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Afton, IA
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5b
Explore more for Afton, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Creston 2 Sw, Ia (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.