Hardin, MT Weather & Growing Conditions
Today
61°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 61, with temperatures falling to around 59 in the afternoon. North wind 9 to 13 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Showers And Thunderstorms | 9 to 13 mph N | 100% |
| Tonight | 49°F | Patchy Fog | 15 mph N | 93% |
| Sunday | 63°F | Rain Showers | 9 to 13 mph NNW | 75% |
| Sunday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 7 mph WNW | 22% |
| Monday | 72°F | Mostly Sunny | 5 mph SSE | 0% |
| Monday Night | 46°F | Mostly Clear | 6 mph SE | 0% |
| Tuesday | 78°F | Sunny | 3 mph SSW | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 5 mph ESE | 5% |
| Wednesday | 80°F | Mostly Sunny | 5 mph SW | 6% |
| Wednesday Night | 50°F | Mostly Clear | 3 mph S | 5% |
| Thursday | 82°F | Sunny | 5 mph WSW | 1% |
| Thursday Night | 50°F | Mostly Clear | 5 mph SE | 1% |
| Friday | 82°F | Mostly Sunny | 5 mph S | 0% |
| Friday Night | 50°F | Partly Cloudy | 6 mph SE | 9% |
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 Sep 19, 2026.