Bonner-West Riverside, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonner-West Riverside, a community in Missoula County, Montana.
Tonight
46°F
Mostly Clear
Mostly clear, with a low around 46. East wind around 5 mph.
7-day forecast for Bonner-West Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Clear | 5 mph E | 2% |
| Sunday | 77°F | Sunny | 3 mph SSE | 1% |
| Sunday Night | 47°F | Mostly Clear | 3 mph ESE | 0% |
| Monday | 80°F | Sunny | 3 mph SSE | 0% |
| Monday Night | 50°F | Mostly Clear | 2 mph SE | 0% |
| Tuesday | 81°F | Sunny | 3 mph S | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 2 mph SE | 1% |
| Wednesday | 78°F | Mostly Sunny | 3 mph SW | 3% |
| Wednesday Night | 49°F | Partly Cloudy | 3 mph WNW | 8% |
| Thursday | 78°F | Mostly Sunny | 3 mph SW | 2% |
| Thursday Night | 49°F | Partly Cloudy | 2 mph NE | 8% |
| Friday | 76°F | Mostly Sunny | 5 mph SE | 8% |
| Friday Night | 47°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph NNW | 15% |
| Saturday | 68°F | Slight Chance Light Rain then Partly Sunny | 5 mph NW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Bonner-West Riverside (46.877, -113.888). Updated through the day.
Growing snapshot for Bonner-West Riverside
Last spring frost
May 10
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
5b
More local growing data for Bonner-West Riverside: nearby ZIP 59851 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Alberton
Arlee
Condon
Cyr
East Missoula
Evaro
Frenchtown
Huson
Lolo
Missoula
Orchard Homes
Piltzville
Potomac
Seeley Lake
Turah
Twin Creeks
Wye
Climate data from the nearest NOAA station, Missoula 2 Ne, Mt (4.7 mi from Bonner-West Riverside). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.