Franklin, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Franklin, a city in Franklin County, Idaho.
Tonight
41°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then a chance of showers and thunderstorms between midnight and 2am, then a slight chance of showers and thunderstorms between 2am and 5am. Mostly cloudy. Low around 41, with temperatures rising to around 45 overnight. North wind 0 to 3 mph. Chance of precipitation is 60%.
7-day forecast for Franklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Showers And Thunderstorms Likely | 0 to 3 mph N | 64% |
| Saturday | 66°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph WSW | 46% |
| Saturday Night | 37°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph NE | 24% |
| Sunday | 72°F | Sunny | 0 to 3 mph NW | 0% |
| Sunday Night | 39°F | Mostly Clear | 2 mph ENE | 0% |
| Monday | 76°F | Sunny | 3 mph ENE | 0% |
| Monday Night | 44°F | Partly Cloudy | 2 mph ENE | 1% |
| Tuesday | 78°F | Mostly Sunny | 3 mph N | 6% |
| Tuesday Night | 45°F | Slight Chance Showers And Thunderstorms then Slight Chance Light Rain | 2 mph SE | 20% |
| Wednesday | 78°F | Sunny | 0 to 3 mph SSW | 7% |
| Wednesday Night | 44°F | Mostly Clear | 2 mph E | 4% |
| Thursday | 80°F | Sunny | 3 mph SSW | 3% |
| Thursday Night | 47°F | Partly Cloudy | 3 mph SE | 5% |
| Friday | 80°F | Mostly Sunny | 5 mph SSE | 8% |
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 Sep 19, 2026.