Afton, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Afton, a city in Washington County, Minnesota.
This Afternoon
60°F
Light Rain
Rain before 5pm, then rain likely and patchy fog. Cloudy. High near 60, with temperatures falling to around 57 in the afternoon. North wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Afton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Light Rain | 5 mph N | 100% |
| Tonight | 51°F | Rain | 5 mph NE | 98% |
| Wednesday | 56°F | Light Rain | 5 to 10 mph NE | 86% |
| Wednesday Night | 44°F | Light Rain | 10 to 15 mph NNW | 86% |
| Thursday | 49°F | Light Rain Likely | 10 to 15 mph N | 56% |
| Thursday Night | 35°F | Mostly Cloudy | 5 to 10 mph NNE | 2% |
| Friday | 46°F | Partly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 30°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WSW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 5 mph WSW | 8% |
| Sunday | 55°F | Mostly Sunny | 5 to 10 mph W | 11% |
| Sunday Night | 37°F | Partly Cloudy | 5 mph SW | 2% |
| Monday | 57°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph WNW | 1% |
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 Nov 3, 2026.