Harman US

Basalt, ID Weather & Growing Conditions

Overnight
45°F
Slight Chance Light Rain
A slight chance of rain after 2am. Mostly cloudy. Low around 45, with temperatures rising to around 47 overnight. South wind around 3 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 45°F Slight Chance Light Rain 3 mph S 23%
Saturday 61°F Chance Light Rain then Slight Chance Showers And Thunderstorms 3 to 7 mph SW 29%
Saturday Night 40°F Partly Cloudy 0 to 5 mph SSE 8%
Sunday 68°F Mostly Sunny 3 mph WSW 1%
Sunday Night 41°F Mostly Clear 3 mph E 0%
Monday 74°F Sunny 5 mph NNE 0%
Monday Night 44°F Mostly Clear 3 mph ENE 0%
Tuesday 75°F Mostly Sunny 5 mph NNE 1%
Tuesday Night 46°F Partly Cloudy 3 mph ESE 13%
Wednesday 76°F Mostly Sunny 5 mph SSE 8%
Wednesday Night 46°F Mostly Clear 5 mph SE 4%
Thursday 79°F Sunny 6 mph SSE 2%
Thursday Night 48°F Partly Cloudy 6 mph SE 3%
Friday 79°F Mostly Sunny 7 mph SE 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Basalt, ID

Last spring frost
May 5
First fall frost
Oct 3
Growing season
149 days
Hardiness zone
5b

Explore more for Basalt, ID: full frost dates · planting calendar · Idaho frost dates

Climate data from the nearest NOAA station, Blackfoot Fire Dept, Id (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.