Dayton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Franklin County, Idaho.
Tonight
32°F
Patchy Fog
Patchy fog. Cloudy. Low around 32, with temperatures rising to around 35 overnight. North wind around 5 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 32°F | Patchy Fog | 5 mph N | 3% |
| Wednesday | 53°F | Patchy Fog then Mostly Cloudy | 6 mph NNW | 6% |
| Wednesday Night | 29°F | Areas Of Fog | 3 mph NNW | 0% |
| Thursday | 50°F | Areas Of Fog then Slight Chance Light Rain | 3 mph S | 19% |
| Thursday Night | 29°F | Slight Chance Light Rain then Areas Of Fog | 2 mph NNW | 19% |
| Friday | 51°F | Mostly Sunny | 5 mph WNW | 1% |
| Friday Night | 29°F | Partly Cloudy | 2 mph ENE | 1% |
| Saturday | 54°F | Sunny | 0 to 3 mph E | 0% |
| Saturday Night | 32°F | Mostly Clear | 2 mph E | 0% |
| Sunday | 58°F | Sunny | 2 to 8 mph SSE | 0% |
| Sunday Night | 34°F | Partly Cloudy | 3 mph ESE | 1% |
| Monday | 59°F | Mostly Sunny | 5 mph ESE | 1% |
| Monday Night | 35°F | Partly Cloudy | 2 mph E | 3% |
| Tuesday | 59°F | Mostly Sunny | 3 mph SSE | 6% |
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 Nov 4, 2026.