Bruneau, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bruneau, a community in Owyhee County, Idaho.
Tonight
50°F
Patchy Smoke then Slight Chance Showers And Thunderstorms
Patchy smoke before 9pm, then a slight chance of showers and thunderstorms between midnight and 5am. Mostly cloudy, with a low around 50. West wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Bruneau
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Patchy Smoke then Slight Chance Showers And Thunderstorms | 5 mph W | 17% |
| Saturday | 77°F | Mostly Sunny | 5 to 12 mph WNW | 9% |
| Saturday Night | 48°F | Mostly Clear | 2 to 7 mph S | 0% |
| Sunday | 81°F | Patchy Fog then Sunny | 2 to 7 mph E | 0% |
| Sunday Night | 50°F | Mostly Clear | 1 to 5 mph E | 0% |
| Monday | 85°F | Mostly Sunny | 2 to 7 mph E | 0% |
| Monday Night | 53°F | Partly Cloudy | 1 to 5 mph WNW | 1% |
| Tuesday | 85°F | Mostly Sunny | 1 to 5 mph NNE | 0% |
| Tuesday Night | 52°F | Mostly Clear | 5 mph W | 0% |
| Wednesday | 87°F | Sunny | 3 to 7 mph E | 0% |
| Wednesday Night | 52°F | Mostly Clear | 6 to 9 mph E | 1% |
| Thursday | 89°F | Sunny | 8 to 18 mph E | 0% |
| Thursday Night | 55°F | Partly Cloudy | 10 to 15 mph E | 0% |
| Friday | 88°F | Mostly Sunny | 9 to 13 mph E | 0% |
Forecast source: National Weather Service (api.weather.gov) for Bruneau (42.873, -115.795). Updated through the day.
Growing snapshot for Bruneau
Last spring frost
Apr 17
First fall frost
Oct 17
Growing season
181 days
Hardiness zone
7a
More local growing data for Bruneau: nearby ZIP 83604 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bruneau, Id (11.1 mi from Bruneau). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.