Jeffers, MT Weather & Growing Conditions
Tonight
25°F
Mostly Cloudy
Mostly cloudy. Low around 25, with temperatures rising to around 28 overnight. South southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 25°F | Mostly Cloudy | 0 to 5 mph SSE | 0% |
| Wednesday | 47°F | Mostly Sunny | 1 mph NNE | 0% |
| Wednesday Night | 26°F | Mostly Clear | 1 to 12 mph SSE | 0% |
| Thursday | 47°F | Mostly Sunny | 12 mph S | 11% |
| Thursday Night | 25°F | Partly Cloudy | 8 to 13 mph S | 11% |
| Friday | 46°F | Mostly Sunny | 8 to 15 mph S | 7% |
| Friday Night | 27°F | Partly Cloudy | 10 to 22 mph S | 7% |
| Saturday | 50°F | Mostly Sunny | 6 to 10 mph S | 0% |
| Saturday Night | 30°F | Partly Cloudy | 9 to 20 mph S | 0% |
| Sunday | 56°F | Mostly Sunny | 15 to 23 mph S | 1% |
| Sunday Night | 32°F | Mostly Cloudy | 9 to 22 mph S | 1% |
| Monday | 55°F | Partly Sunny | 6 to 13 mph S | 4% |
| Monday Night | 33°F | Mostly Cloudy | 10 to 18 mph S | 4% |
| Tuesday | 56°F | Mostly Sunny | 10 to 18 mph S | 5% |
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 Nov 4, 2026.