Preston, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Preston, a city in Franklin County, Idaho.
This Afternoon
51°F
Mostly Sunny
Mostly sunny. High near 51, with temperatures falling to around 48 in the afternoon. West northwest wind around 3 mph.
7-day forecast for Preston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 51°F | Mostly Sunny | 3 mph WNW | 0% |
| Tonight | 32°F | Mostly Cloudy then Patchy Fog | 5 mph NNE | 3% |
| Wednesday | 52°F | Areas Of Fog then Mostly Cloudy | 5 mph NNW | 5% |
| Wednesday Night | 30°F | Areas Of Fog | 2 mph NE | 0% |
| Thursday | 49°F | Areas Of Fog then Slight Chance Light Rain | 3 mph SE | 21% |
| Thursday Night | 30°F | Slight Chance Light Rain then Areas Of Fog | 2 mph N | 21% |
| Friday | 51°F | Mostly Sunny | 3 mph W | 1% |
| Friday Night | 30°F | Partly Cloudy | 3 mph E | 1% |
| Saturday | 54°F | Sunny | 2 mph S | 0% |
| Saturday Night | 32°F | Mostly Clear | 2 mph ESE | 0% |
| Sunday | 58°F | Sunny | 2 to 6 mph SSE | 0% |
| Sunday Night | 35°F | Partly Cloudy | 3 mph ESE | 1% |
| Monday | 59°F | Mostly Sunny | 3 mph SE | 1% |
| Monday Night | 36°F | Partly Cloudy | 2 mph ESE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Preston (42.099, -111.881). Updated through the day.
Growing snapshot for Preston
Last spring frost
May 16
First fall frost
Sep 28
Growing season
133 days
Hardiness zone
6a
More local growing data for Preston: 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 Preston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.