Dayton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Franklin County, Idaho.
This Afternoon
72°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 72, with temperatures falling to around 67 in the afternoon. North wind around 7 mph. Chance of precipitation is 80%.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Showers And Thunderstorms | 7 mph N | 77% |
| Tonight | 43°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 7 mph N | 74% |
| Saturday | 64°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph WNW | 52% |
| Saturday Night | 40°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph NNW | 16% |
| Sunday | 72°F | Sunny | 3 mph NW | 0% |
| Sunday Night | 42°F | Mostly Clear | 5 mph NE | 0% |
| Monday | 75°F | Sunny | 5 mph ESE | 0% |
| Monday Night | 46°F | Partly Cloudy | 5 mph ENE | 0% |
| Tuesday | 76°F | Mostly Sunny | 5 mph NNW | 4% |
| Tuesday Night | 46°F | Partly Cloudy | 3 mph ESE | 13% |
| Wednesday | 78°F | Sunny | 5 mph S | 6% |
| Wednesday Night | 46°F | Mostly Clear | 3 mph NE | 4% |
| Thursday | 80°F | Sunny | 5 mph ENE | 1% |
| Thursday Night | 48°F | Partly Cloudy | 5 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (42.111, -111.985). Updated through the day.
Growing snapshot for Dayton
Last spring frost
May 16
First fall frost
Sep 28
Growing season
133 days
Hardiness zone
6a
More local growing data for Dayton: nearby ZIP 83232 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Preston, Id (5.4 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.