Swan Valley, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swan Valley, a city in Bonneville County, Idaho.
Today
50°F
Patchy Fog then Partly Sunny
Patchy fog before 10am. Partly sunny. High near 50, with temperatures falling to around 45 in the afternoon. Northwest wind 0 to 5 mph.
7-day forecast for Swan Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Patchy Fog then Partly Sunny | 0 to 5 mph NW | 1% |
| Tonight | 31°F | Areas Of Fog | 0 to 3 mph ESE | 1% |
| Thursday | 47°F | Areas Of Fog then Slight Chance Light Rain | 5 mph SSW | 19% |
| Thursday Night | 32°F | Slight Chance Light Rain then Areas Of Fog | 2 mph SSW | 19% |
| Friday | 45°F | Mostly Sunny | 3 mph SW | 0% |
| Friday Night | 30°F | Partly Cloudy | 2 mph SSE | 0% |
| Saturday | 53°F | Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 to 9 mph E | 0% |
| Sunday | 59°F | Mostly Sunny | 2 to 14 mph S | 0% |
| Sunday Night | 35°F | Partly Cloudy | 2 to 9 mph SSE | 0% |
| Monday | 59°F | Mostly Sunny | 0 to 9 mph S | 0% |
| Monday Night | 36°F | Mostly Cloudy | 0 to 7 mph SSE | 2% |
| Tuesday | 56°F | Mostly Sunny | 0 to 8 mph S | 2% |
| Tuesday Night | 36°F | Partly Cloudy | 0 to 7 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Swan Valley (43.443, -111.325). Updated through the day.
Growing snapshot for Swan Valley
Growing season
69 days
Hardiness zone
6a
More local growing data for Swan Valley: nearby ZIP 83449 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Swan Valley, Id (4 mi from Swan Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.