Weather forecast for tomorrowSan Luis, AZ

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 86°F
  • 64°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphN 9°
  • Humidity: 34%
  • UV index: 6
  • Sunrise: 6:45 am MST
  • Sunset: 6:02 pm MST
  • ▼
On Sunday, October 18, sunshine will likely continue with scattered clouds at most.
The highest expected temperature is a humid 86°F, while the lowest temperature will be a breezy 64.4°F.
The anticipated daily high is projected to match October's typical maximum of 88.5°F.
Sunrise will be at 6:45 am and sunset at 6:02 pm; tomorrow's daylight will last for 11h and 17min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 84°C.
Coldest period: 3 am - 6 am 66°C.

Chance of precipitation

Highest chance: 12 am 3%.

Hourly weather forecast

  • 12 am
  • 70°F
  • Feels like:
    70°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNNW 327°
  • Humidity: 37%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 333°
  • Humidity: 39%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 347°
  • Humidity: 43%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 66°F
  • Feels like:
    66°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphNNW 347°
  • Humidity: 44%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:45 am
  • 8 am
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 356°
  • Humidity: 44%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 75°F
  • Feels like:
    75°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 20°
  • Humidity: 35%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 81°F
  • Feels like:
    81°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 24°
  • Humidity: 29%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNE 24°
  • Humidity: 28%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 4 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 357°
  • Humidity: 29%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 82°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 352°
  • Humidity: 32%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:02 pm
  • 8 pm
  • 77°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNW 316°
  • Humidity: 39%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 73°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNW 315°
  • Humidity: 44%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of cloudy and clear weather is forecasted.
The temperature will be between the lowest temperature of 64.4°F and the highest temperature of 84.2°F. The hottest part of the day will be from 2 pm to 5 pm.
The maximum temperature will be in line with October's average highest temperature of 88.5°F. The minimum temperature tomorrow will be also a couple of degrees lower than October's average low.
Updated: Oct 17, 2026 @ 15:30:37 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, the outlook remains bright and sunny.

Tomorrow, the highest temperature will be 86°F, while the lowest temperature will be 64.4°F.
The highest temperature will be in line with the average maximum of 88.5°F in October. Tomorrow, the lowest temperature will be a few degrees lower than the average low temperature.

On Sunday, in San Luis, sunrise will be at 6:45 am and sunset at 6:02 pm (MST).

In San Luis, the length of the day tomorrow will be 11h and 17min.