Spencer, ID Weather & Growing Conditions
Tonight
30°F
Mostly Cloudy
Mostly cloudy. Low around 30, with temperatures rising to around 33 overnight. North northeast wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 30°F | Mostly Cloudy | 8 mph NNE | 0% |
| Wednesday | 52°F | Partly Sunny | 2 to 7 mph N | 0% |
| Wednesday Night | 28°F | Areas Of Fog | 5 mph NE | 0% |
| Thursday | 43°F | Areas Of Fog then Partly Sunny | 5 mph SSE | 6% |
| Thursday Night | 27°F | Areas Of Fog | 5 mph ENE | 6% |
| Friday | 41°F | Partly Sunny | 5 mph SE | 2% |
| Friday Night | 28°F | Mostly Cloudy | 5 mph ENE | 2% |
| Saturday | 47°F | Mostly Sunny | 3 mph SE | 0% |
| Saturday Night | 29°F | Partly Cloudy | 1 to 5 mph ENE | 0% |
| Sunday | 50°F | Mostly Sunny | 2 to 6 mph ESE | 0% |
| Sunday Night | 32°F | Partly Cloudy | 5 mph ENE | 0% |
| Monday | 51°F | Mostly Sunny | 3 mph E | 0% |
| Monday Night | 33°F | Mostly Cloudy | 3 mph ENE | 2% |
| Tuesday | 51°F | Mostly Sunny | 3 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spencer, ID
Last spring frost
Jun 5
First fall frost
Sep 20
Growing season
106 days
Hardiness zone
5b
Explore more for Spencer, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Small 6N, Id (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.