Spencer, MT Weather & Growing Conditions
Today
55°F
Areas Of Fog then Chance Showers And Thunderstorms
Areas of fog and a chance of rain before 7am, then rain likely and areas of fog between 7am and 8am, then areas of fog and a chance of rain between 8am and 9am, then rain likely and areas of fog between 9am and 10am, then areas of fog and a chance of rain between 10am and 11am, then rain likely and areas of fog between 11am and noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms likely between 1pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 55. Southeast wind 1 to 5 mph. Chance of precipitation is 70%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Areas Of Fog then Chance Showers And Thunderstorms | 1 to 5 mph SE | 72% |
| Tonight | 33°F | Chance Light Rain then Areas Of Fog | 1 to 5 mph NNW | 32% |
| Sunday | 62°F | Areas Of Fog then Partly Sunny | 0 to 6 mph WNW | 1% |
| Sunday Night | 32°F | Partly Cloudy | 3 mph ESE | 1% |
| Monday | 67°F | Sunny | 1 to 5 mph SSE | 1% |
| Monday Night | 35°F | Mostly Clear | 1 to 6 mph ESE | 0% |
| Tuesday | 69°F | Mostly Sunny | 0 to 6 mph SSE | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 1 to 6 mph E | 4% |
| Wednesday | 69°F | Mostly Sunny | 2 to 10 mph SE | 5% |
| Wednesday Night | 36°F | Mostly Clear | 5 to 10 mph SE | 5% |
| Thursday | 70°F | Sunny | 5 to 13 mph SE | 3% |
| Thursday Night | 37°F | Partly Cloudy | 5 to 12 mph SE | 1% |
| Friday | 70°F | Mostly Sunny | 5 to 16 mph SE | 2% |
| Friday Night | 37°F | Mostly Cloudy | 5 to 13 mph SSE | 9% |
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 Sep 19, 2026.