Augusta, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Augusta, a community in Teton County, Montana.
This Afternoon
56°F
Mostly Sunny
Mostly sunny. High near 56, with temperatures falling to around 49 in the afternoon. South wind 1 to 6 mph.
7-day forecast for Augusta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Mostly Sunny | 1 to 6 mph S | 0% |
| Tonight | 30°F | Mostly Cloudy | 1 to 5 mph W | 0% |
| Wednesday | 51°F | Mostly Sunny | 2 mph N | 0% |
| Wednesday Night | 30°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Thursday | 53°F | Mostly Sunny | 5 to 12 mph WSW | 0% |
| Thursday Night | 33°F | Partly Cloudy | 7 to 10 mph SW | 1% |
| Friday | 51°F | Mostly Sunny | 7 to 14 mph SW | 5% |
| Friday Night | 36°F | Mostly Cloudy | 10 to 16 mph WSW | 5% |
| Saturday | 55°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Saturday Night | 38°F | Mostly Cloudy | 5 to 8 mph SW | 0% |
| Sunday | 62°F | Partly Sunny | 7 to 15 mph SW | 3% |
| Sunday Night | 38°F | Mostly Cloudy | 5 to 9 mph WSW | 4% |
| Monday | 56°F | Partly Sunny | 5 mph SW | 1% |
| Monday Night | 38°F | Mostly Cloudy | 3 to 7 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Augusta (47.489, -112.392). Updated through the day.
Growing snapshot for Augusta
Last spring frost
May 13
First fall frost
Sep 27
Growing season
135 days
Hardiness zone
4b
More local growing data for Augusta: nearby ZIP 59436 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Bynum
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Dutton
Gilman
Miller Colony
New Miami Colony
New Rockport Colony
Pendroy
Power
Rockport Colony
Climate data from the nearest NOAA station, Fairfield, Mt (6.2 mi from Augusta). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.