Weather forecast for 10 daysSun Valley, ID
Weather forecast for the weekend
Sunday Oct 18, 2026
- 63°F
- 36°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 171°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:55 am MDT
- Sunset: 6:49 pm MDT
- details ▼
Tomorrow, on Sunday, scattered clouds may briefly filter the sunlight, but it will remain bright overall.
Dramatic changes in temperature are anticipated, reaching a high of a comfortable 62.6°F and falling to a low of an icy 35.6°F.
Tomorrow, climate comparisons show a temperature closer to September's 63.7°F than October's 48°F.
Sunrise will be at 7:55 am and sunset at 6:49 pm; tomorrow's daylight will last for 10h and 53min.
Dramatic changes in temperature are anticipated, reaching a high of a comfortable 62.6°F and falling to a low of an icy 35.6°F.
Tomorrow, climate comparisons show a temperature closer to September's 63.7°F than October's 48°F.
Sunrise will be at 7:55 am and sunset at 6:49 pm; tomorrow's daylight will last for 10h and 53min.
10-day overview
Daily temperatures
Warmest period: tomorrow - Monday 63°C.
Coldest day: Saturday 24.10. 43°C.
Coldest day: Saturday 24.10. 43°C.
Chance of precipitation
Highest chance: Thursday 78%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 36°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNW 314°
- Humidity: 53%
- UV index: 0
- Sunrise: 7:54 am MDT
- Sunset: 6:50 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 63°F
- 36°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 171°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:55 am MDT
- Sunset: 6:49 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 39°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphSSE 152°
- Humidity: 45%
- UV index: 3
- Sunrise: 7:57 am MDT
- Sunset: 6:47 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 61°F
- 37°F
Mostly Cloudy
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 7mphE 88°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:58 am MDT
- Sunset: 6:45 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 59°F
- 39°F
Showers
- Precip. probability: 39%
- Precipitation: 0.08"
- Wind: 8mphESE 103°
- Humidity: 73%
- UV index: 3
- Sunrise: 7:59 am MDT
- Sunset: 6:44 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 54°F
- 37°F
Rain
- Precip. probability: 78%
- Precipitation: 0.39"
- Wind: 9mphESE 114°
- Humidity: 91%
- UV index: 2
- Sunrise: 8:00 am MDT
- Sunset: 6:42 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 45°F
- 27°F
Showers
- Precip. probability: 43%
- Precipitation: 0.08"
- Wind: 9mphN 355°
- Humidity: 93%
- UV index: 3
- Sunrise: 8:02 am MDT
- Sunset: 6:41 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 43°F
- 30°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 7mphSE 135°
- Humidity: 74%
- UV index: 3
- Sunrise: 8:03 am MDT
- Sunset: 6:39 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 48°F
- 28°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphESE 113°
- Humidity: 77%
- UV index: 3
- Sunrise: 8:04 am MDT
- Sunset: 6:38 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 45°F
- 27°F
Mostly Sunny
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 6mphESE 119°
- Humidity: 77%
- UV index: 3
- Sunrise: 8:05 am MDT
- Sunset: 6:36 pm MDT
- details ▼
For the next ten days, a combination of overcast, rainy and dry and sunny weather is forecasted.
Rainfall is forecasted for Wednesday through Friday.
Substantial differences in temperature are forecasted in the next ten days. The maximum temperature will vary between 42.8°F and 62.6°F, while the fluctuation in night temperatures will be also significant, as the minimum temperature is expected to range between 26.6°F and 39.2°F.
Sunday and Monday, with the highest temperature of 62.6°F, will be the warmest days in Sun Valley; the lowest daytime temperature of the period will be reached on next Saturday, peaking at 42.8°F.
Rainfall is forecasted for Wednesday through Friday.
Substantial differences in temperature are forecasted in the next ten days. The maximum temperature will vary between 42.8°F and 62.6°F, while the fluctuation in night temperatures will be also significant, as the minimum temperature is expected to range between 26.6°F and 39.2°F.
Sunday and Monday, with the highest temperature of 62.6°F, will be the warmest days in Sun Valley; the lowest daytime temperature of the period will be reached on next Saturday, peaking at 42.8°F.
Updated: Oct 18, 2026 @ 00:58:26 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, clouds will come and go, but expect bright periods in between.
Tomorrow, the maximum temperature will be 62.6°F, while the minimum temperature will be 35.6°F.
The maximum temperature tomorrow will be notably higher than the average highest temperature of 48°F in October. Tomorrow, the lowest temperature will be a couple of degrees higher than the average low temperature.
The maximum temperature tomorrow will be notably higher than the average highest temperature of 48°F in October. Tomorrow, the lowest temperature will be a couple of degrees higher than the average low temperature.
On Sunday, in Sun Valley, sunrise will be at 7:55 am and sunset at 6:49 pm (MDT).
In Sun Valley, Idaho, the length of the day tomorrow will be 10h and 53min.
