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
Light Rain Likely
Rain likely. Mostly cloudy. Low around 44, with temperatures rising to around 46 overnight. East wind around 3 mph. Chance of precipitation is 70%.
7-day forecast for Spencer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Light Rain Likely | 3 mph E | 67% |
| Saturday | 57°F | Rain Likely then Chance Showers And Thunderstorms | 6 mph SE | 63% |
| Saturday Night | 39°F | Slight Chance Light Rain then Mostly Cloudy | 3 to 7 mph NNW | 22% |
| Sunday | 63°F | Mostly Sunny | 5 mph NW | 5% |
| Sunday Night | 40°F | Mostly Clear | 5 mph WSW | 0% |
| Monday | 68°F | Sunny | 7 mph ESE | 0% |
| Monday Night | 43°F | Mostly Clear | 5 mph NE | 0% |
| Tuesday | 70°F | Mostly Sunny | 7 mph S | 0% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph NNE | 7% |
| Wednesday | 70°F | Mostly Sunny | 5 to 8 mph ESE | 6% |
| Wednesday Night | 44°F | Mostly Clear | 6 mph E | 5% |
| Thursday | 72°F | Sunny | 5 to 8 mph SE | 3% |
| Thursday Night | 46°F | Mostly Clear | 6 mph E | 0% |
| Friday | 72°F | Mostly Sunny | 6 to 9 mph ESE | 3% |
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 Sep 19, 2026.