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.
Tonight
36°F
Cloudy then Slight Chance Rain Showers
A slight chance of rain showers between 3am and 4am. Cloudy, with a low around 36. South southeast wind 2 to 7 mph.
7-day forecast for Twin Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 36°F | Cloudy then Slight Chance Rain Showers | 2 to 7 mph SSE | 14% |
| Wednesday | 54°F | Mostly Sunny | 3 to 10 mph W | 9% |
| Wednesday Night | 32°F | Partly Cloudy | 5 mph S | 0% |
| Thursday | 54°F | Partly Sunny | 3 to 7 mph SW | 0% |
| Thursday Night | 32°F | Mostly Clear | 3 to 7 mph SW | 0% |
| Friday | 55°F | Mostly Sunny | 3 mph WNW | 1% |
| Friday Night | 34°F | Partly Cloudy | 1 to 5 mph SE | 1% |
| Saturday | 59°F | Sunny | 7 mph E | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 to 9 mph E | 0% |
| Sunday | 63°F | Mostly Sunny | 2 to 8 mph ENE | 0% |
| Sunday Night | 38°F | Partly Cloudy | 5 mph SE | 0% |
| Monday | 63°F | Mostly Sunny | 2 to 6 mph E | 0% |
| Monday Night | 39°F | Mostly Cloudy | 5 mph SE | 1% |
| Tuesday | 62°F | Mostly Sunny | 5 mph W | 7% |
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 Nov 4, 2026.