Weather forecast for 10 daysGrand Terrace, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 88°F
  • 61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 164°
  • Humidity: 28%
  • UV index: 6
  • Sunrise: 6:57 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
On Sunday, October 18, the forecast calls for abundant sunshine.
Temperatures are set to span a considerable range, with a high of a blazing 87.8°F and a low of a breezy 60.8°F.
Temperatures are trending hotter, with a peak resembling September's average maximum rather than October's seasonal high.
Sunrise will be at 6:57 am and sunset at 6:11 pm; the daylight will last for 11h and 14min.

10-day overview

Daily temperatures

Warmest day: today 88°C.
Coldest day: Thursday 68°C.

Chance of precipitation

Highest chance: Thursday 79%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 88°F
  • 61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 164°
  • Humidity: 28%
  • UV index: 6
  • Sunrise: 6:57 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 86°F
  • 61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphWSW 256°
  • Humidity: 32%
  • UV index: 6
  • Sunrise: 6:57 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 59°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSSW 203°
  • Humidity: 43%
  • UV index: 6
  • Sunrise: 6:58 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 79°F
  • 57°F
PM Showers
PM Showers
  • Precip. probability: 50%
  • Precipitation: 0.47"
  • Wind: 11mphSSW 194°
  • Humidity: 58%
  • UV index: 6
  • Sunrise: 6:59 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 68°F
  • 52°F
Thunderstorms
Thunderstorms
  • Precip. probability: 79%
  • Precipitation: 0.2"
  • Wind: 7mphSSW 209°
  • Humidity: 73%
  • UV index: 5
  • Sunrise: 7:00 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 54°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphNNW 342°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 7:01 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 79°F
  • 55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphN 7°
  • Humidity: 43%
  • UV index: 5
  • Sunrise: 7:02 am PDT
  • Sunset: 6:04 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 77°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 9mphNNW 348°
  • Humidity: 45%
  • UV index: 5
  • Sunrise: 7:02 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 73°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 10mphSSW 201°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:03 am PDT
  • Sunset: 6:02 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 73°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphSSE 167°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 7:04 am PDT
  • Sunset: 6:01 pm PDT
  • ▼
An unsettled pattern is expected over the next ten days, and a combination of primarily clear and occasionally damp, stormy and cloudy weather is anticipated.
Rain is predicted for Wednesday and Thursday.
There will be a considerable variation in temperature in the next ten days. Forecast highs will fluctuate between 68°F and 87.8°F, while the lowest temperature will be between 51.8°F and 60.8°F.
Today is the hottest day, with a maximum temperature of 87.8°F; with the highest temperature of 68°F, Thursday will be the coldest day.
Updated: Oct 18, 2026 @ 13:20:59 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny skies are in store, with excellent visibility.

Today, the maximum temperature will be 87.8°F, while the minimum temperature will be 60.8°F.
Today, the maximum temperature will be notably higher than the average highest temperature of 78.1°F in October. Today, the lowest temperature will be a couple of degrees higher than the average low temperature.

On Sunday, in Grand Terrace, sunrise will be at 6:57 am and sunset at 6:11 pm (PDT).

In Grand Terrace, the length of the day today will be 11h and 14min.