Island Park, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Island Park, a city in Fremont County, Idaho.
Overnight
25°F
Mostly Cloudy
Mostly cloudy. Low around 25, with temperatures rising to around 27 overnight. North wind around 6 mph.
7-day forecast for Island Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 25°F | Mostly Cloudy | 6 mph N | 1% |
| Wednesday | 49°F | Partly Sunny | 5 mph NW | 1% |
| Wednesday Night | 25°F | Partly Cloudy | 2 mph S | 0% |
| Thursday | 41°F | Mostly Cloudy then Slight Chance Rain And Snow | 2 to 7 mph S | 17% |
| Thursday Night | 27°F | Slight Chance Rain And Snow | 5 mph SSW | 17% |
| Friday | 37°F | Partly Sunny | 2 to 8 mph SSW | 0% |
| Friday Night | 24°F | Mostly Cloudy | 0 to 5 mph SSW | 0% |
| Saturday | 46°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Saturday Night | 27°F | Mostly Clear | 2 mph SSE | 0% |
| Sunday | 50°F | Mostly Sunny | 2 to 10 mph SSE | 1% |
| Sunday Night | 29°F | Partly Cloudy | 3 mph S | 1% |
| Monday | 50°F | Mostly Sunny | 1 to 6 mph S | 1% |
| Monday Night | 30°F | Mostly Cloudy | 2 mph SE | 1% |
| Tuesday | 49°F | Mostly Sunny | 1 to 7 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov) for Island Park (44.534, -111.338). Updated through the day.
Growing snapshot for Island Park
Growing season
49 days
Hardiness zone
4a
More local growing data for Island Park: nearby ZIP 83433 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Island Park, Id (5.8 mi from Island Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.