Augusta, MT Weather & Growing Conditions
Tonight
49°F
Chance Showers And Thunderstorms then Chance Light Rain
A chance of showers and thunderstorms before 9pm, then a chance of rain. Cloudy, with a low around 49. North wind around 6 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Showers And Thunderstorms then Chance Light Rain | 6 mph N | 32% |
| Saturday | 57°F | Chance Light Rain | 7 mph NE | 28% |
| Saturday Night | 45°F | Mostly Cloudy | 5 mph WSW | 1% |
| Sunday | 65°F | Sunny | 2 to 7 mph S | 0% |
| Sunday Night | 46°F | Mostly Clear | 1 to 6 mph S | 0% |
| Monday | 68°F | Sunny | 2 to 8 mph WSW | 0% |
| Monday Night | 48°F | Mostly Clear | 5 to 12 mph W | 0% |
| Tuesday | 67°F | Mostly Sunny | 3 to 10 mph SW | 0% |
| Tuesday Night | 48°F | Partly Cloudy | 3 to 7 mph WSW | 1% |
| Wednesday | 66°F | Mostly Sunny | 6 to 10 mph WSW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 6 to 9 mph WSW | 2% |
| Thursday | 68°F | Mostly Sunny | 5 to 8 mph SW | 1% |
| Thursday Night | 51°F | Partly Cloudy | 3 to 7 mph WSW | 1% |
| Friday | 67°F | Mostly Sunny | 7 mph SW | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Augusta, MT
Last spring frost
Jun 12
First fall frost
Sep 8
Growing season
88 days
Hardiness zone
4b
Explore more for Augusta, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Gibson Dam, Mt (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.