Nashua, MT Weather & Growing Conditions
This Afternoon
47°F
Sunny
Sunny. High near 47, with temperatures falling to around 42 in the afternoon. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Sunny | 3 mph SE | 0% |
| Tonight | 29°F | Patchy Fog | 5 mph E | 0% |
| Wednesday | 48°F | Patchy Fog then Mostly Sunny | 1 to 6 mph NW | 0% |
| Wednesday Night | 29°F | Mostly Cloudy | 6 mph NE | 0% |
| Thursday | 49°F | Mostly Sunny | 3 to 9 mph SSE | 0% |
| Thursday Night | 32°F | Partly Cloudy | 3 to 8 mph WSW | 1% |
| Friday | 51°F | Sunny | 7 to 12 mph WSW | 4% |
| Friday Night | 35°F | Partly Cloudy | 7 to 14 mph WSW | 5% |
| Saturday | 53°F | Sunny | 6 to 15 mph W | 3% |
| Saturday Night | 32°F | Mostly Clear | 7 mph S | 0% |
| Sunday | 59°F | Mostly Sunny | 8 mph SSW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 8 to 18 mph W | 0% |
| Monday | 52°F | Mostly Sunny | 3 to 15 mph W | 1% |
| Monday Night | 33°F | Partly Cloudy | 3 to 7 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Nashua, MT
Last spring frost
May 12
First fall frost
Sep 24
Growing season
134 days
Hardiness zone
4a
Explore more for Nashua, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Nashua #2, Mt (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.