Basalt, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Basalt, a city in Bingham County, Idaho.
Tonight
45°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. Low around 45, with temperatures rising to around 47 overnight. South wind 3 to 7 mph. Chance of precipitation is 50%.
7-day forecast for Basalt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 53% |
| Saturday | 61°F | Chance Showers And Thunderstorms | 3 to 7 mph SSW | 36% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph S | 10% |
| Sunday | 69°F | Mostly Sunny | 3 mph SW | 0% |
| Sunday Night | 43°F | Mostly Clear | 3 mph E | 0% |
| Monday | 75°F | Sunny | 5 mph NNE | 0% |
| Monday Night | 46°F | Partly Cloudy | 3 mph NNE | 0% |
| Tuesday | 75°F | Mostly Sunny | 5 mph N | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph SSE | 5% |
| Wednesday | 76°F | Sunny | 5 mph SSW | 3% |
| Wednesday Night | 46°F | Mostly Clear | 5 mph SE | 3% |
| Thursday | 78°F | Sunny | 5 mph N | 2% |
| Thursday Night | 49°F | Partly Cloudy | 5 mph SE | 0% |
| Friday | 78°F | Mostly Sunny | 6 mph SSE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Basalt (43.314, -112.165). Updated through the day.
Growing snapshot for Basalt
Last spring frost
May 5
First fall frost
Oct 3
Growing season
149 days
Hardiness zone
5b
More local growing data for Basalt: nearby ZIP 83218 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Blackfoot Fire Dept, Id (12.6 mi from Basalt). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.