Spencer, ID Weather & Growing Conditions
Overnight
29°F
Mostly Cloudy
Mostly cloudy. Low around 29, with temperatures rising to around 31 overnight. North wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 29°F | Mostly Cloudy | 9 mph N | 1% |
| Wednesday | 48°F | Partly Sunny | 3 to 10 mph WNW | 1% |
| Wednesday Night | 27°F | Partly Cloudy | 5 mph SSE | 0% |
| Thursday | 38°F | Mostly Cloudy | 3 to 8 mph SSE | 7% |
| Thursday Night | 27°F | Partly Cloudy | 3 mph ENE | 7% |
| Friday | 35°F | Partly Sunny | 2 to 7 mph SE | 1% |
| Friday Night | 26°F | Mostly Cloudy | 5 mph ENE | 0% |
| Saturday | 43°F | Mostly Sunny | 2 to 6 mph SSE | 0% |
| Saturday Night | 29°F | Mostly Clear | 2 to 6 mph E | 0% |
| Sunday | 46°F | Mostly Sunny | 3 to 9 mph SE | 0% |
| Sunday Night | 31°F | Partly Cloudy | 6 mph E | 0% |
| Monday | 47°F | Partly Sunny | 2 to 6 mph ESE | 0% |
| Monday Night | 32°F | Mostly Cloudy | 5 mph ENE | 0% |
| Tuesday | 47°F | Mostly Sunny | 2 to 6 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Spencer, ID
Last spring frost
May 18
First fall frost
Sep 30
Growing season
132 days
Hardiness zone
5b
Explore more for Spencer, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Dubois Exp Stn, Id (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.