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.
This Afternoon
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3pm, then patchy smoke and a chance of showers and thunderstorms. Partly sunny, with a high near 69. West wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
7-day forecast for Twin Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Showers And Thunderstorms | 12 mph W | 36% |
| Tonight | 50°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 mph SW | 25% |
| Saturday | 68°F | Chance Showers And Thunderstorms then Partly Sunny | 6 to 10 mph W | 50% |
| Saturday Night | 48°F | Partly Cloudy | 5 mph S | 5% |
| Sunday | 75°F | Sunny | 5 mph E | 0% |
| Sunday Night | 50°F | Mostly Clear | 6 mph E | 0% |
| Monday | 79°F | Mostly Sunny | 6 to 9 mph E | 0% |
| Monday Night | 53°F | Partly Cloudy | 5 mph ESE | 0% |
| Tuesday | 79°F | Mostly Sunny | 6 mph ENE | 2% |
| Tuesday Night | 52°F | Partly Cloudy | 6 mph S | 2% |
| Wednesday | 81°F | Sunny | 6 mph E | 0% |
| Wednesday Night | 53°F | Mostly Clear | 3 to 8 mph SE | 2% |
| Thursday | 84°F | Sunny | 8 mph ESE | 1% |
| Thursday Night | 56°F | Partly Cloudy | 6 to 9 mph ESE | 1% |
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 Sep 19, 2026.