Weather forecast for 10 daysPortal, AZ

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 73°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphESE 102°
  • Humidity: 47%
  • UV index: 7
  • Sunrise: 6:22 am MST
  • Sunset: 5:40 pm MST
  • ▼
Today, sunlight and clouds will take turns dominating the sky.
The highest temperature will be a moderately hot 73.4°F, while the lowest temperature will be a fresh 53.6°F.
Today, the expected peak temperature is expected to mirror October's average high of 74.8°F.
Sunrise will be at 6:22 am and sunset at 5:40 pm; the daylight will last for 11h and 19min.

10-day overview

Daily temperatures

Warmest day: Wednesday 82°C.
Coldest period: Monday - Tuesday 70°C.

Chance of precipitation

Highest chance: Thursday 58%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 73°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 6mphESE 102°
  • Humidity: 47%
  • UV index: 7
  • Sunrise: 6:22 am MST
  • Sunset: 5:40 pm MST
  • ▼
  • Monday
  • Oct 19, 2026
  • 75°F
  • 55°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 47%
  • Precipitation: 0.08"
  • Wind: 7mphS 173°
  • Humidity: 61%
  • UV index: 6
  • Sunrise: 6:23 am MST
  • Sunset: 5:39 pm MST
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 79°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 7mphSSE 161°
  • Humidity: 54%
  • UV index: 6
  • Sunrise: 6:23 am MST
  • Sunset: 5:38 pm MST
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 82°F
  • 61°F
Cloudy
Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 8mphSE 142°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 6:24 am MST
  • Sunset: 5:37 pm MST
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 55°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 58%
  • Precipitation: 0.12"
  • Wind: 12mphS 183°
  • Humidity: 54%
  • UV index: 5
  • Sunrise: 6:25 am MST
  • Sunset: 5:36 pm MST
  • ▼
  • Friday
  • Oct 23, 2026
  • 77°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 10mphSSW 213°
  • Humidity: 51%
  • UV index: 6
  • Sunrise: 6:26 am MST
  • Sunset: 5:35 pm MST
  • ▼
  • Saturday
  • Oct 24, 2026
  • 73°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 7mphS 176°
  • Humidity: 48%
  • UV index: 6
  • Sunrise: 6:26 am MST
  • Sunset: 5:34 pm MST
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 52°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Precip. probability: 32%
  • Precipitation: 0.08"
  • Wind: 10mphSE 124°
  • Humidity: 53%
  • UV index: 6
  • Sunrise: 6:27 am MST
  • Sunset: 5:33 pm MST
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphSSE 153°
  • Humidity: 59%
  • UV index: 5
  • Sunrise: 6:28 am MST
  • Sunset: 5:32 pm MST
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 8mphS 176°
  • Humidity: 57%
  • UV index: 6
  • Sunrise: 6:29 am MST
  • Sunset: 5:31 pm MST
  • ▼
Models point to a combination of overcast, thunderstorm-prone and sun-filled weather is forecasted.
Rain is expected on Monday, Thursday and next Sunday.
Temperature variation will be noticeable across the forecast period. Highs will range from 69.8°F to 82.4°F, while nighttime temperatures are expected to vary from 50°F to 60.8°F.
Expect the warmest day on Wednesday, with temperatures peaking at 82.4°F; the coldest days will be next Monday and Tuesday, with a maximum of 69.8°F.
Updated: Oct 18, 2026 @ 11:46:46 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, clouds and sunshine will create a dynamic sky throughout the day.

Today, the maximum temperature will be 73.4°F, while the minimum temperature will be 53.6°F.
The maximum temperature will be in line with the average highest temperature of 74.8°F in October. Today, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Portal, sunrise will be at 6:22 am and sunset at 5:40 pm (MST).

In Portal, the length of the day today will be 11h and 19min.