Dayton, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a city in Franklin County, Idaho.
Today
87°F
Sunny then Patchy Smoke
Patchy smoke after noon. Sunny, with a high near 87. Northwest wind 5 to 9 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny then Patchy Smoke | 5 to 9 mph NW | 0% |
| Tonight | 48°F | Areas Of Smoke | 2 to 9 mph NNW | 0% |
| Wednesday | 90°F | Areas Of Smoke | 2 to 7 mph WSW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 2 to 8 mph N | 0% |
| Thursday | 95°F | Sunny | 2 to 7 mph ENE | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 to 7 mph ENE | 0% |
| Friday | 97°F | Sunny | 2 to 9 mph SE | 0% |
| Friday Night | 61°F | Mostly Clear | 2 to 9 mph N | 0% |
| Saturday | 97°F | Sunny | 2 to 8 mph WSW | 0% |
| Saturday Night | 63°F | Partly Cloudy | 3 to 10 mph N | 0% |
| Sunday | 96°F | Mostly Sunny | 3 to 12 mph WSW | 3% |
| Sunday Night | 61°F | Partly Cloudy | 3 to 10 mph NW | 2% |
| Monday | 94°F | Mostly Sunny | 3 to 13 mph WNW | 4% |
| Monday Night | 60°F | Partly Cloudy | 3 to 12 mph ENE | 5% |
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 Aug 4, 2026.