Afton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Afton, a city in Union County, Iowa.
This Afternoon
65°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 65, with temperatures falling to around 58 in the afternoon. North northeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Afton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Showers And Thunderstorms | 7 to 10 mph NNE | 89% |
| Tonight | 45°F | Rain Showers then Cloudy | 13 mph NW | 78% |
| 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% |
Forecast source: National Weather Service (api.weather.gov) for Afton (41.028, -94.195). Updated through the day.
Growing snapshot for Afton
Last spring frost
Apr 28
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
5b
More local growing data for Afton: nearby ZIP 50830 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Creston 2 Sw, Ia (10.6 mi from Afton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.