Harman US

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

WhenTempForecastWindPrecip
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.