Bonner-West Riverside, MT Weather & Growing Conditions
Overnight
46°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 46. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Patchy Smoke | 2 mph E | 0% |
| Tuesday | 83°F | Patchy Smoke | 1 to 5 mph NE | 0% |
| Tuesday Night | 51°F | Mostly Clear | 0 to 6 mph E | 0% |
| Wednesday | 88°F | Sunny then Patchy Smoke | 1 to 5 mph WSW | 0% |
| Wednesday Night | 54°F | Clear | 1 to 5 mph S | 0% |
| Thursday | 95°F | Sunny | 1 to 5 mph SSW | 0% |
| Thursday Night | 58°F | Clear | 5 mph SW | 0% |
| Friday | 97°F | Sunny | 1 to 6 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 3 to 14 mph WSW | 0% |
| Saturday | 94°F | Sunny | 2 to 7 mph SW | 0% |
| Saturday Night | 58°F | Mostly Clear | 2 to 10 mph W | 0% |
| Sunday | 91°F | Sunny | 1 to 6 mph SSW | 0% |
| Sunday Night | 57°F | Mostly Clear | 1 to 8 mph NNE | 0% |
| Monday | 90°F | Sunny | 0 to 5 mph NNW | 0% |
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 Aug 4, 2026.