Jeffers, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jeffers, a community in Madison County, Montana.
Overnight
41°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 41. North northeast wind around 2 mph.
7-day forecast for Jeffers
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Patchy Smoke | 2 mph NNE | 0% |
| Tuesday | 77°F | Patchy Smoke | 1 to 8 mph NE | 0% |
| Tuesday Night | 45°F | Areas Of Smoke | 2 to 9 mph E | 0% |
| Wednesday | 84°F | Patchy Smoke | 1 to 7 mph SW | 0% |
| Wednesday Night | 49°F | Patchy Smoke then Mostly Clear | 2 to 8 mph SSW | 0% |
| Thursday | 90°F | Sunny | 3 to 9 mph SW | 0% |
| Thursday Night | 54°F | Mostly Clear | 2 to 10 mph SSE | 0% |
| Friday | 94°F | Sunny | 5 to 21 mph SW | 0% |
| Friday Night | 55°F | Mostly Clear | 3 to 15 mph N | 0% |
| Saturday | 93°F | Sunny | 3 to 14 mph SW | 1% |
| Saturday Night | 55°F | Partly Cloudy | 1 to 12 mph NE | 1% |
| Sunday | 91°F | Sunny | 0 to 8 mph WNW | 3% |
| Sunday Night | 53°F | Partly Cloudy | 2 to 9 mph NNE | 6% |
| Monday | 90°F | Sunny | 0 to 8 mph N | 3% |
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
Alder
Big Sky
Brandon
Ennis
Harrison
Mammoth
McAllister
Norris
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 Aug 4, 2026.