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Avon, MT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Avon, a community in Powell County, Montana.

Overnight
45°F
Rain
Rain. Cloudy, with a low around 45. North northeast wind around 3 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Avon

WhenTempForecastWindPrecip
Overnight 45°F Rain 3 mph NNE 95%
Saturday 59°F Showers And Thunderstorms 3 to 8 mph NE 92%
Saturday Night 38°F Mostly Cloudy then Patchy Fog 1 to 6 mph E 6%
Sunday 68°F Areas Of Fog then Mostly Sunny 0 to 5 mph SW 0%
Sunday Night 40°F Mostly Clear 3 mph SSW 0%
Monday 72°F Sunny 1 to 6 mph SW 0%
Monday Night 43°F Mostly Clear 0 to 5 mph SW 0%
Tuesday 72°F Sunny 1 to 5 mph SW 1%
Tuesday Night 43°F Partly Cloudy 3 mph S 2%
Wednesday 73°F Sunny 1 to 6 mph SSW 2%
Wednesday Night 44°F Mostly Clear 5 mph S 4%
Thursday 74°F Sunny 1 to 5 mph SSW 2%
Thursday Night 44°F Partly Cloudy 5 mph SSE 5%
Friday 72°F Mostly Sunny 2 to 7 mph S 8%

Forecast source: National Weather Service (api.weather.gov) for Avon (46.629, -112.576). Updated through the day.

Growing snapshot for Avon

Last spring frost
Jun 9
First fall frost
Sep 8
Growing season
91 days
Hardiness zone
4b

More local growing data for Avon: nearby ZIP 59713 weather · frost dates · planting calendar · Montana frost dates

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Climate data from the nearest NOAA station, Elliston, Mt (11 mi from Avon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.