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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.