Weather forecast for tomorrowSun Valley, AZ

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 68°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphE 79°
  • Humidity: 45%
  • UV index: 5
  • Sunrise: 6:28 am MST
  • Sunset: 5:41 pm MST
  • ▼
Tomorrow, in Sun Valley, expect continuous cloudiness with subdued daylight.
Rainfall is not forecasted. The maximum expected temperature is an agreeable 68°F, while the minimum temperature will be a chilly 42.8°F.
Tomorrow's high temperature will mirror the usual October maximum of 70.5°F.
Sunrise will be at 6:28 am and sunset at 5:41 pm; tomorrow's daylight will last for 11h and 13min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 46°C.

Chance of precipitation

Highest chance: 6 am - 3 pm 15%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 3mphWSW 254°
  • Humidity: 47%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 48°F
  • Feels like:
    48°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 3mphNNE 12°
  • Humidity: 53%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 46°F
  • Feels like:
    46°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphE 92°
  • Humidity: 60%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 46°F
  • Feels like:
    46°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 2mphENE 74°
  • Humidity: 64%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:28 am
  • 8 am
  • 50°F
  • Feels like:
    48°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 3mphENE 77°
  • Humidity: 57%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 55°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphESE 111°
  • Humidity: 41%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    61°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 2mphSE 143°
  • Humidity: 38%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphWSW 237°
  • Humidity: 41%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphNW 323°
  • Humidity: 41%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
Sunset: 5:41 pm
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphNNW 331°
  • Humidity: 49%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphNNE 25°
  • Humidity: 66%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphSW 230°
  • Humidity: 78%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, primarily overcast and occasionally wet weather is predicted.
The temperature will be between a minimum of 46.4°F and a maximum of 66.2°F. The warmest part of the day will be at 3 pm and 4 pm.
The maximum temperature tomorrow will be similar to October's average high. The minimum temperature will be more similar to November's average low of 38.8°F than October's typical 50.2°F.
Updated: Oct 18, 2026 @ 02:49:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, expect mainly cloudy weather with limited sun.

No, it will not rain tomorrow.

Tomorrow, the maximum temperature will be 68°F, while the minimum temperature will be 42.8°F.
The highest temperature will be in line with the average maximum of 70.5°F in October. The lowest temperature tomorrow will be a couple of degrees lower than the average low temperature.

On Sunday, in Sun Valley, sunrise will be at 6:28 am and sunset at 5:41 pm (MST).

Tomorrow, the daylight will last for 11h and 13min.