Franklin, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Franklin, a city in Franklin County, Idaho.
Tonight
31°F
Areas Of Fog
Areas of fog. Cloudy. Low around 31, with temperatures rising to around 33 overnight. East wind around 3 mph.
7-day forecast for Franklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 31°F | Areas Of Fog | 3 mph E | 2% |
| Wednesday | 54°F | Areas Of Fog then Mostly Cloudy | 3 mph NNW | 7% |
| Wednesday Night | 29°F | Areas Of Fog | 2 mph NE | 0% |
| Thursday | 51°F | Areas Of Fog then Slight Chance Light Rain | 2 mph W | 22% |
| Thursday Night | 29°F | Slight Chance Light Rain then Areas Of Fog | 2 mph WNW | 22% |
| Friday | 52°F | Mostly Sunny | 0 to 3 mph WNW | 1% |
| Friday Night | 29°F | Partly Cloudy | 2 mph S | 1% |
| Saturday | 56°F | Sunny | 2 mph W | 0% |
| Saturday Night | 32°F | Mostly Clear | 1 mph SE | 0% |
| Sunday | 60°F | Sunny | 1 to 5 mph S | 0% |
| Sunday Night | 35°F | Partly Cloudy | 2 mph SE | 1% |
| Monday | 61°F | Mostly Sunny | 2 mph S | 1% |
| Monday Night | 36°F | Partly Cloudy | 1 mph SE | 4% |
| Tuesday | 60°F | Mostly Sunny | 2 mph WSW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Franklin (42.010, -111.802). Updated through the day.
Growing snapshot for Franklin
Last spring frost
May 16
First fall frost
Sep 28
Growing season
133 days
Hardiness zone
6a
More local growing data for Franklin: nearby ZIP 83237 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Preston, Id (7 mi from Franklin). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.