Spencer, MT Weather & Growing Conditions
Overnight
35°F
Areas Of Smoke
Areas of smoke. Mostly clear, with a low around 35. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Areas Of Smoke | 2 mph N | 0% |
| Tuesday | 73°F | Areas Of Smoke | 1 to 10 mph NNW | 0% |
| Tuesday Night | 39°F | Areas Of Smoke | 1 to 10 mph NNE | 1% |
| Wednesday | 79°F | Areas Of Smoke | 0 to 10 mph W | 0% |
| Wednesday Night | 43°F | Patchy Smoke then Mostly Clear | 1 to 10 mph NNW | 0% |
| Thursday | 84°F | Sunny | 0 to 13 mph W | 0% |
| Thursday Night | 47°F | Mostly Clear | 1 to 13 mph NNW | 0% |
| Friday | 88°F | Sunny | 0 to 17 mph SW | 0% |
| Friday Night | 49°F | Mostly Clear | 6 to 18 mph NW | 0% |
| Saturday | 87°F | Sunny | 1 to 18 mph W | 1% |
| Saturday Night | 49°F | Partly Cloudy | 3 to 15 mph NW | 1% |
| Sunday | 86°F | Sunny | 0 to 15 mph W | 1% |
| Sunday Night | 48°F | Partly Cloudy | 2 to 15 mph NW | 1% |
| Monday | 84°F | Sunny | 0 to 14 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spencer, MT
Last spring frost
Jun 11
First fall frost
Sep 10
Growing season
89 days
Hardiness zone
5a
Explore more for Spencer, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Lima, Mt (19.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.