Boise City, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Boise City, a city in Ada County, Idaho.
This Afternoon
74°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4pm. Mostly cloudy, with a high near 74. Northwest wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Boise City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Slight Chance Showers And Thunderstorms | 7 mph NW | 22% |
| Tonight | 54°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 7 mph NNW | 37% |
| Saturday | 77°F | Mostly Sunny | 2 to 8 mph WNW | 7% |
| Saturday Night | 54°F | Mostly Clear | 5 mph NE | 0% |
| Sunday | 81°F | Sunny | 5 mph SSE | 0% |
| Sunday Night | 56°F | Mostly Clear | 5 mph NE | 0% |
| Monday | 83°F | Sunny | 3 mph SSE | 0% |
| Monday Night | 56°F | Partly Cloudy | 5 mph NNE | 0% |
| Tuesday | 84°F | Mostly Sunny | 5 mph SSE | 1% |
| Tuesday Night | 56°F | Mostly Clear | 6 mph NNE | 1% |
| Wednesday | 85°F | Sunny | 6 mph SE | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 to 9 mph ENE | 1% |
| Thursday | 88°F | Sunny | 9 to 13 mph SE | 0% |
| Thursday Night | 60°F | Partly Cloudy | 9 to 13 mph SE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Boise City (43.600, -116.232). Updated through the day.
Growing snapshot for Boise City
Last spring frost
Apr 24
First fall frost
Oct 21
Growing season
179 days
More local growing data for Boise City: nearby ZIP 83725 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boise Air Terminal, Id (3.2 mi from Boise City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.