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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
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.