Midvale, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Midvale, a city in Washington County, Idaho.
Tonight
52°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms between 10pm and midnight, then a chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers and thunderstorms between 3am and 4am. Mostly cloudy, with a low around 52. North northwest wind 0 to 5 mph. Chance of precipitation is 40%.
7-day forecast for Midvale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Chance Showers And Thunderstorms | 0 to 5 mph NNW | 38% |
| Saturday | 80°F | Mostly Sunny | 2 mph N | 5% |
| Saturday Night | 51°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 82°F | Sunny | 2 mph SE | 0% |
| Sunday Night | 54°F | Mostly Clear | 1 mph W | 0% |
| Monday | 84°F | Sunny | 2 mph W | 0% |
| Monday Night | 54°F | Mostly Clear | 1 mph WNW | 0% |
| Tuesday | 84°F | Sunny | 2 mph S | 0% |
| Tuesday Night | 54°F | Mostly Clear | 2 mph NNW | 1% |
| Wednesday | 83°F | Sunny | 3 mph WNW | 2% |
| Wednesday Night | 54°F | Mostly Clear | 2 mph N | 1% |
| Thursday | 86°F | Sunny | 0 to 3 mph W | 0% |
| Thursday Night | 56°F | Partly Cloudy | 2 mph N | 1% |
| Friday | 83°F | Mostly Sunny | 0 to 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Midvale (44.462, -116.741). Updated through the day.
Growing snapshot for Midvale
Last spring frost
May 15
First fall frost
Sep 27
Growing season
134 days
Hardiness zone
6a
More local growing data for Midvale: nearby ZIP 83645 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cambridge, Id (17 mi from Midvale). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.