Bonner-West Riverside, MT Weather & Growing Conditions
Overnight
52°F
Chance Light Rain
A chance of rain. Cloudy, with a low around 52. Wind around 0 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Chance Light Rain | 0 mph | 48% |
| Saturday | 72°F | Chance Light Rain | 0 to 3 mph ESE | 49% |
| Saturday Night | 48°F | Mostly Clear | 3 mph ESE | 4% |
| Sunday | 78°F | Sunny | 2 mph S | 0% |
| Sunday Night | 49°F | Clear | 2 mph SSE | 0% |
| Monday | 81°F | Sunny | 2 mph SSE | 0% |
| Monday Night | 51°F | Mostly Clear | 2 mph WSW | 0% |
| Tuesday | 81°F | Sunny | 2 mph S | 0% |
| Tuesday Night | 51°F | Mostly Clear | 2 mph NNW | 1% |
| Wednesday | 80°F | Sunny | 3 mph S | 1% |
| Wednesday Night | 51°F | Mostly Clear | 2 mph SSW | 3% |
| Thursday | 80°F | Sunny | 3 mph SSE | 2% |
| Thursday Night | 51°F | Partly Cloudy | 2 mph E | 6% |
| Friday | 78°F | Mostly Sunny | 5 mph SSE | 5% |
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 Sep 19, 2026.