Swan Valley, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swan Valley, a city in Bonneville County, Idaho.
Overnight
39°F
Patchy Smoke
Patchy smoke. Mostly clear. Low around 39, with temperatures rising to around 42 overnight. East wind around 5 mph.
7-day forecast for Swan Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Patchy Smoke | 5 mph E | 0% |
| Tuesday | 81°F | Patchy Smoke | 2 to 9 mph S | 0% |
| Tuesday Night | 42°F | Patchy Smoke | 2 to 8 mph ESE | 0% |
| Wednesday | 84°F | Areas Of Smoke | 5 to 9 mph SSW | 0% |
| Wednesday Night | 45°F | Mostly Clear | 3 to 7 mph SSE | 0% |
| Thursday | 90°F | Sunny | 5 to 9 mph SSW | 0% |
| Thursday Night | 50°F | Clear | 5 to 9 mph SW | 0% |
| Friday | 94°F | Sunny | 5 to 10 mph SSW | 0% |
| Friday Night | 54°F | Mostly Clear | 7 to 10 mph SSW | 0% |
| Saturday | 94°F | Sunny | 6 to 12 mph SSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 6 to 9 mph S | 0% |
| Sunday | 93°F | Sunny | 6 to 12 mph SSW | 1% |
| Sunday Night | 55°F | Mostly Clear | 7 to 13 mph SSW | 1% |
| Monday | 91°F | Sunny | 7 to 12 mph SW | 3% |
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 Aug 4, 2026.