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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

WhenTempForecastWindPrecip
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.