Afton, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Afton, a city in Washington County, Minnesota.
Tonight
54°F
Patchy Fog
Patchy fog and showers and thunderstorms likely. Cloudy, with a low around 54. East southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Afton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Patchy Fog | 10 to 15 mph ESE | 41% |
| Saturday | 64°F | Chance Rain Showers then Cloudy | 10 mph ENE | 35% |
| Saturday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 14% |
| Sunday | 69°F | Mostly Sunny | 10 to 15 mph NE | 2% |
| Sunday Night | 47°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph E | 8% |
| Monday Night | 42°F | Mostly Cloudy | 5 mph ENE | 7% |
| Tuesday | 65°F | Mostly Sunny | 5 mph E | 3% |
| Tuesday Night | 43°F | Partly Cloudy | 0 to 5 mph ESE | 1% |
| Wednesday | 67°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph ESE | 8% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SSE | 12% |
| Thursday Night | 50°F | Partly Cloudy | 0 mph | 10% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Afton (44.899, -92.819). Updated through the day.
Growing snapshot for Afton
Last spring frost
Apr 23
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
5a
More local growing data for Afton: nearby ZIP 55001 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Hastings Dam 2, Mn (9.9 mi from Afton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.