Bonner-West Riverside, MT Weather & Growing Conditions
Tonight
32°F
Mostly Cloudy
Mostly cloudy, with a low around 32. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 32°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 53°F | Mostly Sunny | 1 mph WNW | 0% |
| Wednesday Night | 32°F | Mostly Clear | 0 to 3 mph SSE | 0% |
| Thursday | 48°F | Partly Sunny | 3 mph WSW | 7% |
| Thursday Night | 33°F | Partly Cloudy | 3 mph WSW | 1% |
| Friday | 52°F | Mostly Sunny | 3 mph SW | 4% |
| Friday Night | 37°F | Mostly Cloudy | 6 mph SW | 4% |
| Saturday | 59°F | Mostly Sunny | 1 to 5 mph S | 2% |
| Saturday Night | 39°F | Partly Cloudy | 1 to 7 mph SE | 9% |
| Sunday | 60°F | Partly Sunny | 6 to 9 mph SSW | 9% |
| Sunday Night | 37°F | Mostly Cloudy | 2 to 6 mph WSW | 8% |
| Monday | 56°F | Partly Sunny | 2 mph S | 12% |
| Monday Night | 39°F | Mostly Cloudy | 2 mph SSW | 12% |
| Tuesday | 58°F | Partly Sunny | 3 mph WSW | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bonner-West Riverside, MT
Last spring frost
May 10
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
5b
Explore more for Bonner-West Riverside, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Missoula 2 Ne, Mt (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.