Jeffers, MT Weather & Growing Conditions
Tonight
46°F
Showers And Thunderstorms
Showers and thunderstorms before midnight, then patchy fog and showers and thunderstorms likely. Cloudy, with a low around 46. North northwest wind 1 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Showers And Thunderstorms | 1 to 5 mph NNW | 78% |
| Saturday | 57°F | Patchy Fog | 1 to 10 mph W | 94% |
| Saturday Night | 44°F | Showers And Thunderstorms Likely then Chance Light Rain | 0 to 10 mph WNW | 58% |
| Sunday | 68°F | Areas Of Fog then Partly Sunny | 0 to 3 mph WNW | 14% |
| Sunday Night | 42°F | Mostly Clear | 6 mph ESE | 1% |
| Monday | 76°F | Sunny | 1 to 5 mph SSW | 0% |
| Monday Night | 45°F | Mostly Clear | 3 to 7 mph SSE | 1% |
| Tuesday | 76°F | Mostly Sunny | 0 to 5 mph SSW | 1% |
| Tuesday Night | 46°F | Partly Cloudy | 7 mph S | 6% |
| Wednesday | 76°F | Sunny | 2 to 6 mph SSW | 4% |
| Wednesday Night | 46°F | Mostly Clear | 5 to 13 mph S | 1% |
| Thursday | 78°F | Sunny | 3 to 9 mph S | 3% |
| Thursday Night | 48°F | Partly Cloudy | 7 to 16 mph S | 1% |
| Friday | 79°F | Mostly Sunny | 7 to 12 mph S | 1% |
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.