Weather forecast for tomorrowSun Valley, ID
Weather forecast for tomorrow
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.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 63°C.
Coldest period: 3 am - 6 am 37°C.
Coldest period: 3 am - 6 am 37°C.
Chance of precipitation
Highest chance: 6 am 1%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:37°F
Mostly Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphNW 316°
- Humidity: 56%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:36°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphNW 321°
- Humidity: 57%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:34°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 318°
- Humidity: 59%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:32°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 323°
- Humidity: 59%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:55 am
- 8 am
- 37°F
- Feels like:32°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNW 306°
- Humidity: 61%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:43°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphNW 316°
- Humidity: 49%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSE 129°
- Humidity: 37%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 61°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSE 142°
- Humidity: 32%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 63°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSSE 150°
- Humidity: 30%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 59°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 150°
- Humidity: 34%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:49 pm
- 8 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSE 136°
- Humidity: 49%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 45°F
- Feels like:41°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphWNW 283°
- Humidity: 54%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, a combination of overcast and clear weather is forecasted.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The maximum temperature will align more closely with September's average high of 63.7°F than with October's 48°F. Tomorrow, the temperature is expected to be moderately higher than October's normal minimum of 31.1°F.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The maximum temperature will align more closely with September's average high of 63.7°F than with October's 48°F. Tomorrow, the temperature is expected to be moderately higher than October's normal minimum of 31.1°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.
