Hardin, MT Weather & Growing Conditions
Today
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 75 in the afternoon. Southeast wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 1 to 6 mph SE | 0% |
| Tonight | 50°F | Mostly Clear | 3 to 8 mph E | 1% |
| Wednesday | 87°F | Sunny | 2 to 7 mph WSW | 0% |
| Wednesday Night | 54°F | Mostly Clear | 3 to 8 mph NE | 0% |
| Thursday | 95°F | Sunny | 2 to 9 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 3 to 9 mph ENE | 0% |
| Friday | 100°F | Sunny | 6 mph WNW | 0% |
| Friday Night | 62°F | Mostly Clear | 8 mph N | 0% |
| Saturday | 97°F | Sunny | 7 to 13 mph NW | 0% |
| Saturday Night | 62°F | Mostly Clear | 6 to 10 mph ENE | 0% |
| Sunday | 95°F | Sunny | 6 to 10 mph NNW | 0% |
| Sunday Night | 63°F | Partly Cloudy | 7 to 10 mph NE | 6% |
| Monday | 92°F | Mostly Sunny | 7 to 13 mph NNE | 3% |
| Monday Night | 63°F | Partly Cloudy | 9 to 13 mph ENE | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hardin, MT
Last spring frost
May 13
First fall frost
Sep 29
Growing season
135 days
Hardiness zone
4b
Explore more for Hardin, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Hardin, Mt (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.