Nampa, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Nampa, a city in Canyon County, Idaho.
Tonight
38°F
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers between 11pm and midnight. Mostly cloudy, with a low around 38. Northwest wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Nampa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 38°F | Slight Chance Rain Showers then Mostly Cloudy | 3 mph NW | 16% |
| Wednesday | 60°F | Sunny | 2 to 6 mph NNW | 2% |
| Wednesday Night | 37°F | Mostly Cloudy | 3 mph ESE | 12% |
| Thursday | 57°F | Partly Sunny | 1 to 5 mph ENE | 12% |
| Thursday Night | 34°F | Mostly Clear | 3 mph SSE | 0% |
| Friday | 58°F | Partly Sunny | 2 mph ENE | 1% |
| Friday Night | 36°F | Partly Cloudy | 2 mph SSE | 1% |
| Saturday | 63°F | Mostly Sunny | 2 to 9 mph SE | 0% |
| Saturday Night | 42°F | Partly Cloudy | 7 to 13 mph SE | 0% |
| Sunday | 64°F | Mostly Sunny | 3 to 13 mph SW | 0% |
| Sunday Night | 39°F | Mostly Cloudy | 3 mph WSW | 0% |
| Monday | 63°F | Partly Sunny | 3 mph S | 4% |
| Monday Night | 39°F | Partly Cloudy | 2 mph WSW | 4% |
| Tuesday | 64°F | Mostly Sunny | 3 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for Nampa (43.586, -116.566). Updated through the day.
Growing snapshot for Nampa
Last spring frost
Apr 29
First fall frost
Oct 13
Growing season
164 days
Hardiness zone
7a
More local growing data for Nampa: nearby ZIP 83687 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Nampa Sugar Factory, Id (2.3 mi from Nampa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.