Nashua, MT Weather & Growing Conditions
This Afternoon
68°F
Cloudy
Cloudy, with a high near 68. East northeast wind around 17 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Cloudy | 17 mph ENE | 2% |
| Tonight | 50°F | Mostly Cloudy then Chance Rain Showers | 15 mph E | 32% |
| Sunday | 62°F | Chance Rain Showers then Mostly Cloudy | 15 mph ESE | 37% |
| Sunday Night | 47°F | Mostly Cloudy | 12 mph ESE | 1% |
| Monday | 70°F | Mostly Sunny | 10 to 16 mph SE | 1% |
| Monday Night | 50°F | Mostly Clear | 13 to 16 mph SE | 0% |
| Tuesday | 77°F | Sunny | 13 mph SE | 0% |
| Tuesday Night | 52°F | Mostly Clear | 5 to 9 mph SE | 1% |
| Wednesday | 79°F | Sunny | 8 mph SE | 3% |
| Wednesday Night | 53°F | Mostly Clear | 5 to 8 mph SE | 8% |
| Thursday | 81°F | Sunny | 7 to 10 mph SE | 0% |
| Thursday Night | 54°F | Mostly Clear | 6 to 10 mph ESE | 3% |
| Friday | 80°F | Sunny | 12 to 16 mph ESE | 1% |
| Friday Night | 51°F | Partly Cloudy | 15 mph ESE | 9% |
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 Sep 19, 2026.