Jeffers, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jeffers, a community in Madison County, Montana.
Tonight
26°F
Mostly Cloudy
Mostly cloudy, with a low around 26. South wind 0 to 6 mph.
7-day forecast for Jeffers
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 26°F | Mostly Cloudy | 0 to 6 mph S | 0% |
| Wednesday | 49°F | Mostly Sunny | 1 mph NNE | 0% |
| Wednesday Night | 26°F | Mostly Clear | 1 to 10 mph SSE | 0% |
| Thursday | 48°F | Mostly Sunny | 8 to 12 mph S | 11% |
| Thursday Night | 26°F | Partly Cloudy | 8 to 13 mph S | 11% |
| Friday | 48°F | Mostly Sunny | 8 to 15 mph SSW | 7% |
| Friday Night | 27°F | Partly Cloudy | 10 to 22 mph S | 7% |
| Saturday | 51°F | Mostly Sunny | 7 to 10 mph S | 0% |
| Saturday Night | 30°F | Partly Cloudy | 9 to 20 mph S | 0% |
| Sunday | 57°F | Mostly Sunny | 15 to 21 mph S | 1% |
| Sunday Night | 32°F | Mostly Cloudy | 8 to 21 mph S | 1% |
| Monday | 57°F | Partly Sunny | 6 to 12 mph S | 3% |
| Monday Night | 33°F | Mostly Cloudy | 10 to 16 mph S | 3% |
| Tuesday | 57°F | Mostly Sunny | 10 to 17 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov) for Jeffers (45.348, -111.704). Updated through the day.
Growing snapshot for Jeffers
Last spring frost
Jun 16
First fall frost
Sep 4
Growing season
78 days
Hardiness zone
5a
More local growing data for Jeffers: nearby ZIP 59729 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
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Pony
Sheridan
Silver Star
Twin Bridges
Virginia City
Climate data from the nearest NOAA station, Ennis, Mt (3.1 mi from Jeffers). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.