Weather forecast for tomorrowSan Tan Valley, AZ
Weather forecast for tomorrow
Monday Oct 19, 2026
- 88°F
- 68°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphESE 116°
- Humidity: 43%
- UV index: 6
- Sunrise: 6:33 am MST
- Sunset: 5:48 pm MST
- details ▼
Tomorrow, in San Tan Valley, sun and clouds will share the sky, creating a partly cloudy day.
Rainfall is not predicted. Forecasted temperatures will peak at a blazing 87.8°F and dip to a minimum of a delightful 68°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is calculated to be a humid 87.8°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Sunrise will be at 6:33 am and sunset at 5:48 pm; tomorrow's daylight will last for 11h and 14min.
Rainfall is not predicted. Forecasted temperatures will peak at a blazing 87.8°F and dip to a minimum of a delightful 68°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is calculated to be a humid 87.8°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Sunrise will be at 6:33 am and sunset at 5:48 pm; tomorrow's daylight will last for 11h and 14min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 86°C.
Coldest period: 3 am - 6 am 66°C.
Coldest period: 3 am - 6 am 66°C.
Chance of precipitation
Highest chance: 6 am - 3 pm 15%.
Hourly weather forecast
- 12 am
- 70°F
- Feels like:70°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphE 83°
- Humidity: 59%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 66°F
- Feels like:66°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphE 98°
- Humidity: 63%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 66°F
- Feels like:66°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphESE 105°
- Humidity: 65%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphE 99°
- Humidity: 65%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 6:33 am
- 8 am
- 70°F
- Feels like:70°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphESE 105°
- Humidity: 59%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 10 am
- 77°F
- Feels like:77°F
Mostly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphESE 117°
- Humidity: 45%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 82°F
- Feels like:82°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphSE 124°
- Humidity: 38%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 6
- details ▼
- 2 pm
- 84°F
- Feels like:84°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphSE 143°
- Humidity: 35%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 86°F
- Feels like:86°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 6mphW 278°
- Humidity: 33%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
Sunset: 5:48 pm
- 6 pm
- 82°F
- Feels like:82°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphNNW 329°
- Humidity: 38%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 8 pm
- 77°F
- Feels like:77°F
Mostly Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphNE 56°
- Humidity: 50%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 73°F
- Feels like:73°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphENE 69°
- Humidity: 58%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of primarily gloomy and occasionally clear and showery weather is anticipated.
The temperature will be between the lowest temperature of 66.2°F and the highest temperature of 86°F. The hottest part of the day will be at 3 pm and 4 pm.
The temperature will be between the lowest temperature of 66.2°F and the highest temperature of 86°F. The hottest part of the day will be at 3 pm and 4 pm.
Updated: Oct 18, 2026 @ 11:02:46 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
On Monday, sunny moments will alternate with patchy cloud cover.
No, it will not rain tomorrow.
Tomorrow, the maximum temperature will be 87.8°F, while the minimum temperature will be 68°F. The maximum heat index, which adjusts the air temperature based on humidity, is computed to be 87.8°F.
On Monday, in San Tan Valley, sunrise will be at 6:33 am and sunset at 5:48 pm (MST).
Tomorrow, the daylight will last for 11h and 14min.
