Elkhorn, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Elkhorn, a community in Jefferson County, Montana.
This Afternoon
62°F
Chance Showers And Thunderstorms
A slight chance of rain before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then showers and thunderstorms likely. Mostly cloudy. High near 62, with temperatures falling to around 59 in the afternoon. North northeast wind around 8 mph. Chance of precipitation is 60%.
7-day forecast for Elkhorn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Chance Showers And Thunderstorms | 8 mph NNE | 63% |
| Tonight | 48°F | Showers And Thunderstorms | 9 mph NNE | 97% |
| Saturday | 51°F | Showers And Thunderstorms | 9 mph NNE | 96% |
| Saturday Night | 44°F | Chance Light Rain | 6 mph NNW | 50% |
| Sunday | 62°F | Mostly Sunny | 6 mph W | 4% |
| Sunday Night | 44°F | Mostly Clear | 7 mph S | 0% |
| Monday | 65°F | Sunny | 6 mph SW | 1% |
| Monday Night | 47°F | Mostly Clear | 7 mph WNW | 0% |
| Tuesday | 66°F | Sunny | 6 mph SSW | 1% |
| Tuesday Night | 48°F | Mostly Clear | 3 to 7 mph WSW | 3% |
| Wednesday | 66°F | Sunny | 7 mph SW | 2% |
| Wednesday Night | 48°F | Mostly Clear | 7 mph WSW | 3% |
| Thursday | 68°F | Sunny | 8 mph S | 2% |
| Thursday Night | 49°F | Mostly Clear | 6 to 9 mph S | 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 Sep 18, 2026.