Nashua, MT Weather & Growing Conditions
Today
73°F
Sunny
Sunny, with a high near 73. West northwest wind 8 to 15 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 8 to 15 mph WNW | 0% |
| Tonight | 51°F | Mostly Clear | 3 to 12 mph WSW | 1% |
| Wednesday | 83°F | Partly Sunny | 7 to 15 mph W | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 14 mph NNW | 0% |
| Thursday | 88°F | Sunny | 3 to 12 mph WNW | 0% |
| Thursday Night | 57°F | Mostly Clear | 12 mph N | 0% |
| Friday | 88°F | Sunny | 9 mph E | 0% |
| Friday Night | 58°F | Mostly Clear | 7 to 15 mph NE | 0% |
| Saturday | 88°F | Sunny | 9 to 14 mph ENE | 0% |
| Saturday Night | 59°F | Partly Cloudy | 10 to 16 mph NE | 2% |
| Sunday | 87°F | Mostly Sunny | 15 mph ENE | 2% |
| Sunday Night | 58°F | Partly Cloudy | 13 to 17 mph NE | 14% |
| Monday | 83°F | Chance Showers And Thunderstorms | 16 mph ENE | 25% |
| Monday Night | 58°F | Partly Cloudy then Chance Showers And Thunderstorms | 14 to 18 mph ENE | 27% |
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 Aug 4, 2026.