Afton, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Afton, a city in Washington County, Minnesota.
Today
61°F
Chance Drizzle
A chance of drizzle before 5pm. Cloudy, with a high near 61. East northeast wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast for Afton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Chance Drizzle | 5 to 10 mph ENE | 37% |
| Tonight | 52°F | Mostly Cloudy | 5 mph NNE | 8% |
| Sunday | 67°F | Partly Sunny | 5 to 15 mph NE | 2% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 65°F | Mostly Cloudy | 5 to 10 mph E | 2% |
| Monday Night | 42°F | Partly Cloudy | 5 mph E | 2% |
| Tuesday | 65°F | Sunny | 5 to 10 mph E | 2% |
| Tuesday Night | 41°F | Mostly Clear | 0 to 5 mph ESE | 0% |
| Wednesday | 67°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 46°F | Mostly Clear | 0 to 5 mph SE | 3% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph SE | 7% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph SSE | 9% |
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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Marine on St. Croix
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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.