Inverness, MT Weather & Growing Conditions
This Afternoon
48°F
Mostly Sunny
Mostly sunny. High near 48, with temperatures falling to around 42 in the afternoon. South wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Mostly Sunny | 5 to 8 mph S | 0% |
| Tonight | 29°F | Mostly Cloudy | 3 mph WSW | 0% |
| Wednesday | 45°F | Patchy Fog | 3 mph WSW | 0% |
| Wednesday Night | 28°F | Patchy Fog | 3 to 7 mph SSW | 0% |
| Thursday | 50°F | Mostly Sunny | 7 to 14 mph SW | 0% |
| Thursday Night | 32°F | Mostly Clear | 12 to 16 mph WSW | 0% |
| Friday | 52°F | Mostly Sunny | 13 to 20 mph WSW | 6% |
| Friday Night | 36°F | Partly Cloudy | 20 mph WSW | 6% |
| Saturday | 52°F | Mostly Sunny | 7 to 17 mph WSW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 7 to 10 mph SW | 0% |
| Sunday | 58°F | Partly Sunny | 10 to 17 mph SW | 1% |
| Sunday Night | 37°F | Mostly Cloudy | 9 to 17 mph WSW | 3% |
| Monday | 52°F | Partly Sunny | 9 mph SW | 3% |
| Monday Night | 35°F | Mostly Cloudy | 7 to 12 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Inverness, MT
Last spring frost
May 21
First fall frost
Sep 19
Growing season
119 days
Hardiness zone
4a
Explore more for Inverness, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Joplin, Mt (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.