Weather forecast for 10 daysLos Alamos, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 86°F
  • 52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphW 268°
  • Humidity: 37%
  • UV index: 6
  • Sunrise: 7:09 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
Today, on Sunday, October 18, a sun-drenched sky is anticipated.
Day and night temperatures will sharply contrast, oscillating between a humid 86°F and a fresh 51.8°F.
The higher temperature of 86°F is more typical of September than October.
Sunrise will be at 7:09 am and sunset at 6:22 pm; the daylight will last for 11h and 13min.

10-day overview

Daily temperatures

Warmest day: today 86°C.
Coldest day: Wednesday 66°C.

Chance of precipitation

Highest chance: Wednesday 88%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 86°F
  • 52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphW 268°
  • Humidity: 37%
  • UV index: 6
  • Sunrise: 7:09 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 77°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 12mphWNW 300°
  • Humidity: 60%
  • UV index: 6
  • Sunrise: 7:10 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 75°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphSW 227°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:11 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 50°F
Thunderstorms
Thunderstorms
  • Precip. probability: 88%
  • Precipitation: 0.12"
  • Wind: 10mphSSE 164°
  • Humidity: 82%
  • UV index: 3
  • Sunrise: 7:12 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 48°F
AM Showers
AM Showers
  • Precip. probability: 41%
  • Precipitation: 0.75"
  • Wind: 12mphWNW 300°
  • Humidity: 74%
  • UV index: 5
  • Sunrise: 7:13 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 73°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0.04"
  • Wind: 15mphNW 325°
  • Humidity: 65%
  • UV index: 5
  • Sunrise: 7:13 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 77°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 11mphNW 313°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 7:14 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 75°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 12mphWNW 296°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:15 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 73°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 12mphNW 310°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:16 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 12mphNW 304°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:17 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
Weather fluctuations are likely over the next ten days, and a mix of gloomy, sun-filled, turbulent and wet weather is forecasted.
Rain is forecasted for Wednesday and Thursday.
Temperature differences will be noticeable over the next several days. Highs will range from 66.2°F to 86°F, while the overnight low will be nearly unchanged, as the overnight low will fall between 46.4°F and 51.8°F.
With a high of 86°F, today is the hottest day; the coldest day will be Wednesday, with a maximum of 66.2°F.
Updated: Oct 18, 2026 @ 09:35:01 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny skies and pleasant visibility are expected.

Today, the highest temperature will be 86°F, while the lowest temperature will be 51.8°F.
The highest temperature will be uncommonly higher than the average maximum of 73.6°F in October. The lowest temperature today will be a couple of degrees lower than the average low temperature.

On Sunday, in Los Alamos, sunrise will be at 7:09 am and sunset at 6:22 pm (PDT).

In Los Alamos, the length of the day today will be 11h and 13min.