Twin Falls, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twin Falls, a city in Twin Falls County, Idaho.
Overnight
52°F
Areas Of Smoke
Areas of smoke. Clear. Low around 52, with temperatures rising to around 56 overnight. South southwest wind around 8 mph.
7-day forecast for Twin Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Areas Of Smoke | 8 mph SSW | 0% |
| Tuesday | 87°F | Smoke | 6 to 9 mph WSW | 0% |
| Tuesday Night | 54°F | Areas Of Smoke | 9 mph SW | 0% |
| Wednesday | 93°F | Areas Of Smoke | 2 to 7 mph W | 0% |
| Wednesday Night | 59°F | Patchy Smoke | 5 to 8 mph SSW | 0% |
| Thursday | 100°F | Patchy Smoke | 6 mph ENE | 0% |
| Thursday Night | 64°F | Clear | 3 to 7 mph S | 0% |
| Friday | 100°F | Sunny | 5 to 10 mph WSW | 0% |
| Friday Night | 65°F | Mostly Clear | 3 to 12 mph WSW | 0% |
| Saturday | 99°F | Sunny | 3 to 9 mph W | 0% |
| Saturday Night | 66°F | Mostly Clear | 5 to 9 mph WSW | 0% |
| Sunday | 96°F | Sunny | 5 to 12 mph W | 0% |
| Sunday Night | 64°F | Mostly Clear | 5 to 12 mph W | 0% |
| Monday | 94°F | Sunny | 5 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Twin Falls (42.565, -114.461). Updated through the day.
Growing snapshot for Twin Falls
Last spring frost
May 9
First fall frost
Oct 4
Growing season
147 days
Hardiness zone
6b
More local growing data for Twin Falls: nearby ZIP 83341 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Twin Falls Sun Vly Rgnl Ap, Id (6.6 mi from Twin Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.