Elkhorn, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Elkhorn, a community in Jefferson County, Montana.
This Afternoon
43°F
Mostly Sunny
Mostly sunny. High near 43, with temperatures falling to around 38 in the afternoon. South southeast wind around 6 mph.
7-day forecast for Elkhorn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 43°F | Mostly Sunny | 6 mph SSE | 0% |
| Tonight | 30°F | Mostly Cloudy | 3 to 7 mph E | 0% |
| Wednesday | 44°F | Mostly Sunny | 3 mph WNW | 0% |
| Wednesday Night | 29°F | Mostly Clear | 2 to 7 mph S | 0% |
| Thursday | 44°F | Mostly Sunny | 3 to 7 mph SW | 6% |
| Thursday Night | 29°F | Partly Cloudy | 3 to 10 mph WSW | 6% |
| Friday | 44°F | Mostly Sunny | 7 to 10 mph SW | 7% |
| Friday Night | 32°F | Partly Cloudy | 7 to 16 mph WSW | 7% |
| Saturday | 46°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 5 to 14 mph SSW | 0% |
| Sunday | 51°F | Mostly Sunny | 7 to 14 mph SSW | 1% |
| Sunday Night | 35°F | Partly Cloudy | 7 to 12 mph SW | 1% |
| Monday | 47°F | Partly Sunny | 5 to 8 mph SSW | 2% |
| Monday Night | 36°F | Mostly Cloudy | 5 to 12 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Elkhorn (46.284, -111.949). Updated through the day.
Growing snapshot for Elkhorn
Last spring frost
Jun 18
First fall frost
Sep 5
Growing season
81 days
Hardiness zone
4b
More local growing data for Elkhorn: nearby ZIP 59638 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tizer Gardens, Mt (1.1 mi from Elkhorn). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.