Downey, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Downey, a city in Bannock County, Idaho.
Tonight
36°F
Showers And Thunderstorms Likely then Mostly Cloudy
Showers and thunderstorms likely before 9pm, then a chance of showers and thunderstorms between 9pm and 11pm, then a chance of showers and thunderstorms between 11pm and midnight. Mostly cloudy. Low around 36, with temperatures rising to around 41 overnight. Northwest wind 1 to 5 mph. Chance of precipitation is 70%.
7-day forecast for Downey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 36°F | Showers And Thunderstorms Likely then Mostly Cloudy | 1 to 5 mph NW | 66% |
| Saturday | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 6 mph W | 54% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph WNW | 13% |
| Sunday | 68°F | Mostly Sunny | 0 to 3 mph NW | 1% |
| Sunday Night | 35°F | Mostly Clear | 0 to 3 mph NNE | 0% |
| Monday | 75°F | Sunny | 2 mph ESE | 0% |
| Monday Night | 41°F | Partly Cloudy | 1 mph NE | 0% |
| Tuesday | 76°F | Mostly Sunny | 1 to 5 mph ESE | 4% |
| Tuesday Night | 41°F | Partly Cloudy | 3 mph SSE | 11% |
| Wednesday | 77°F | Sunny | 2 to 6 mph S | 5% |
| Wednesday Night | 40°F | Mostly Clear | 1 to 5 mph ESE | 4% |
| Thursday | 79°F | Sunny | 1 to 5 mph SE | 3% |
| Thursday Night | 43°F | Partly Cloudy | 5 mph SE | 3% |
| Friday | 79°F | Mostly Sunny | 2 to 9 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov) for Downey (42.429, -112.123). Updated through the day.
Growing snapshot for Downey
Last spring frost
May 31
First fall frost
Sep 18
Growing season
110 days
Hardiness zone
6b
More local growing data for Downey: nearby ZIP 83234 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Downey, Id (1.2 mi from Downey). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.