Basalt, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Basalt, a city in Bingham County, Idaho.
Today
50°F
Partly Sunny
Partly sunny. High near 50, with temperatures falling to around 47 in the afternoon. West southwest wind 2 to 7 mph.
7-day forecast for Basalt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Partly Sunny | 2 to 7 mph WSW | 1% |
| Tonight | 30°F | Areas Of Fog | 5 mph SSE | 1% |
| Thursday | 48°F | Areas Of Fog then Mostly Cloudy | 3 mph SW | 2% |
| Thursday Night | 31°F | Areas Of Fog | 2 to 6 mph SSW | 3% |
| Friday | 47°F | Mostly Sunny | 1 to 5 mph SSW | 0% |
| Friday Night | 29°F | Partly Cloudy | 3 mph SE | 0% |
| Saturday | 51°F | Sunny | 1 to 5 mph NNE | 0% |
| Saturday Night | 31°F | Partly Cloudy | 1 to 5 mph ENE | 0% |
| Sunday | 57°F | Mostly Sunny | 1 to 5 mph SSE | 0% |
| Sunday Night | 34°F | Partly Cloudy | 1 to 5 mph SSE | 0% |
| Monday | 56°F | Mostly Sunny | 3 mph NNE | 0% |
| Monday Night | 35°F | Mostly Cloudy | 2 mph E | 0% |
| Tuesday | 56°F | Mostly Sunny | 3 mph S | 2% |
| Tuesday Night | 35°F | Partly Cloudy | 3 mph SSE | 7% |
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 Nov 4, 2026.