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.
Today
72°F
Chance Light Rain
A chance of rain before 3pm. Partly sunny, with a high near 72. East southeast wind around 3 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bonner-West Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Chance Light Rain | 3 mph ESE | 41% |
| Tonight | 46°F | Mostly Clear | 5 mph E | 4% |
| Sunday | 77°F | Sunny | 3 mph SSE | 0% |
| Sunday Night | 47°F | Clear | 3 mph ESE | 0% |
| Monday | 80°F | Sunny | 3 mph S | 0% |
| Monday Night | 49°F | Mostly Clear | 2 mph SSW | 0% |
| Tuesday | 80°F | Sunny | 2 mph S | 0% |
| Tuesday Night | 49°F | Mostly Clear | 2 mph NNE | 2% |
| Wednesday | 80°F | Sunny | 3 mph SSE | 1% |
| Wednesday Night | 49°F | Mostly Clear | 2 mph S | 3% |
| Thursday | 80°F | Sunny | 3 mph SSE | 2% |
| Thursday Night | 49°F | Partly Cloudy | 3 mph E | 6% |
| Friday | 77°F | Mostly Sunny | 5 mph SSE | 5% |
| Friday Night | 47°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph NW | 20% |
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
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Cyr
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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 19, 2026.