Harman US

Jeffers, MT Weather & Growing Conditions

Overnight
46°F
Areas Of Fog
Areas of fog and showers and thunderstorms likely before 5am, then areas of fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Wind around 0 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 46°F Areas Of Fog 0 mph 73%
Saturday 59°F Areas Of Fog 0 to 8 mph N 81%
Saturday Night 40°F Chance Light Rain then Areas Of Fog 0 to 8 mph NNW 54%
Sunday 66°F Areas Of Fog then Partly Sunny 0 to 3 mph NNW 11%
Sunday Night 39°F Mostly Clear 6 mph ESE 0%
Monday 74°F Sunny 1 to 5 mph SSW 0%
Monday Night 43°F Mostly Clear 3 to 7 mph S 0%
Tuesday 76°F Sunny 1 to 5 mph SSW 1%
Tuesday Night 44°F Partly Cloudy 7 mph SSE 2%
Wednesday 77°F Sunny 2 to 7 mph SSW 5%
Wednesday Night 46°F Mostly Clear 5 to 16 mph S 1%
Thursday 79°F Sunny 6 to 10 mph S 2%
Thursday Night 47°F Mostly Clear 9 to 17 mph S 1%
Friday 78°F Mostly Sunny 7 to 13 mph S 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Jeffers, MT

Last spring frost
Jun 16
First fall frost
Sep 4
Growing season
78 days
Hardiness zone
5a

Explore more for Jeffers, MT: full frost dates · planting calendar · Montana frost dates

Climate data from the nearest NOAA station, Ennis, Mt (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.