Basalt, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Basalt, a city in Bingham County, Idaho.
Overnight
40°F
Partly Cloudy
Partly cloudy. Low around 40, with temperatures rising to around 43 overnight. East wind around 1 mph.
7-day forecast for Basalt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Partly Cloudy | 1 mph E | 10% |
| Sunday | 68°F | Sunny | 3 mph NW | 3% |
| Sunday Night | 41°F | Mostly Clear | 3 mph ENE | 0% |
| Monday | 75°F | Sunny | 5 mph NNE | 0% |
| Monday Night | 44°F | Mostly Clear | 3 mph ENE | 0% |
| Tuesday | 75°F | Mostly Sunny | 6 mph NNE | 1% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 mph SSE | 14% |
| Wednesday | 76°F | Mostly Sunny | 5 mph S | 7% |
| Wednesday Night | 47°F | Mostly Clear | 6 mph SSE | 3% |
| Thursday | 79°F | Sunny | 3 to 7 mph SSE | 2% |
| Thursday Night | 49°F | Mostly Clear | 6 mph SSE | 1% |
| Friday | 79°F | Mostly Sunny | 7 mph SSE | 4% |
| Friday Night | 49°F | Partly Cloudy | 8 mph S | 8% |
| Saturday | 75°F | Mostly Sunny | 9 mph S | 11% |
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 20, 2026.