Spencer, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Spencer, a city in Clark County, Idaho.
Overnight
44°F
Areas Of Smoke
Areas of smoke. Mostly clear. Low around 44, with temperatures rising to around 46 overnight. North wind around 15 mph, with gusts as high as 22 mph.
7-day forecast for Spencer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Areas Of Smoke | 15 mph N | 0% |
| Tuesday | 77°F | Areas Of Smoke | 3 to 15 mph WNW | 0% |
| Tuesday Night | 48°F | Areas Of Smoke | 7 to 12 mph WNW | 1% |
| Wednesday | 80°F | Areas Of Smoke | 5 to 9 mph S | 0% |
| Wednesday Night | 51°F | Mostly Clear | 5 to 8 mph NW | 0% |
| Thursday | 87°F | Sunny | 3 to 10 mph S | 0% |
| Thursday Night | 55°F | Clear | 6 to 10 mph NNW | 0% |
| Friday | 90°F | Sunny | 6 to 12 mph SSE | 0% |
| Friday Night | 57°F | Mostly Clear | 9 to 14 mph WNW | 0% |
| Saturday | 89°F | Sunny | 6 to 13 mph WNW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 12 mph NW | 0% |
| Sunday | 88°F | Sunny | 6 to 14 mph SSE | 0% |
| Sunday Night | 56°F | Mostly Clear | 8 to 14 mph NW | 1% |
| Monday | 87°F | Sunny | 6 to 14 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Spencer (44.368, -112.184). Updated through the day.
Growing snapshot for Spencer
Last spring frost
May 18
First fall frost
Sep 30
Growing season
132 days
Hardiness zone
5b
More local growing data for Spencer: nearby ZIP 83446 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dubois Exp Stn, Id (8.4 mi from Spencer). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.