Smiths Ferry, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smiths Ferry, a community in Boise County, Idaho.
This Afternoon
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 67. North northwest wind around 2 mph. Chance of precipitation is 40%.
7-day forecast for Smiths Ferry
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Chance Showers And Thunderstorms | 2 mph NNW | 36% |
| Tonight | 42°F | Chance Showers And Thunderstorms then Areas Of Fog | 2 mph NNE | 61% |
| Saturday | 68°F | Areas Of Fog then Slight Chance Showers And Thunderstorms | 2 mph N | 15% |
| Saturday Night | 41°F | Mostly Clear then Areas Of Fog | 1 mph NNE | 3% |
| Sunday | 73°F | Areas Of Fog then Sunny | 2 mph E | 0% |
| Sunday Night | 43°F | Mostly Clear | 2 mph NW | 0% |
| Monday | 75°F | Sunny | 2 mph S | 0% |
| Monday Night | 44°F | Mostly Clear | 2 mph NNE | 0% |
| Tuesday | 75°F | Sunny | 3 mph WSW | 1% |
| Tuesday Night | 44°F | Mostly Clear | 2 mph NNE | 2% |
| Wednesday | 75°F | Sunny | 0 to 3 mph S | 1% |
| Wednesday Night | 44°F | Mostly Clear | 2 mph ENE | 1% |
| Thursday | 79°F | Sunny | 1 to 5 mph SE | 0% |
| Thursday Night | 45°F | Partly Cloudy | 3 mph ESE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Smiths Ferry (44.299, -116.078). Updated through the day.
Growing snapshot for Smiths Ferry
Last spring frost
Jun 1
First fall frost
Sep 10
Growing season
102 days
Hardiness zone
7a
More local growing data for Smiths Ferry: nearby ZIP 83602 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Garden Valley, Id (8.8 mi from Smiths Ferry). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.