Weather forecast for 10 daysHalf Moon Bay, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 52°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 12mphNW 306°
  • Humidity: 86%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
On Sunday, October 18, after a cloudy morning, the sun will make its presence known by the afternoon, offering a warmer, brighter end to the day.
Temperature span will be from a high of an enjoyable 64.4°F to a low of a crisp 51.8°F.
The maximum temperature will align with October's usual high of 64.6°F.
Sunrise will be at 7:20 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 8min.

10-day overview

Daily temperatures

Warmest day: Saturday 24.10. 66°C.
Coldest day: Monday 63°C.

Chance of precipitation

Highest chance: Wednesday 45%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 2mphNW 325°
  • Humidity: 99%
  • UV index: 0
  • Sunrise: 7:20 am PDT
  • Sunset: 6:29 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 52°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 12mphNW 306°
  • Humidity: 86%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 50°F
Cloudy
Cloudy
  • Precip. probability: 19%
  • Precipitation: 0.04"
  • Wind: 11mphWNW 302°
  • Humidity: 73%
  • UV index: 4
  • Sunrise: 7:21 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 64°F
  • 52°F
AM Showers
AM Showers
  • Precip. probability: 30%
  • Precipitation: 0.12"
  • Wind: 6mphS 187°
  • Humidity: 74%
  • UV index: 3
  • Sunrise: 7:22 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 52°F
Showers
Showers
  • Precip. probability: 45%
  • Precipitation: 0.08"
  • Wind: 6mphNNE 22°
  • Humidity: 81%
  • UV index: 3
  • Sunrise: 7:23 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 64°F
  • 54°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 10mphNW 309°
  • Humidity: 85%
  • UV index: 4
  • Sunrise: 7:24 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 64°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 10mphNW 320°
  • Humidity: 80%
  • UV index: 5
  • Sunrise: 7:25 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 66°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 9mphNNW 331°
  • Humidity: 75%
  • UV index: 4
  • Sunrise: 7:26 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 64°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 11mphW 271°
  • Humidity: 74%
  • UV index: 4
  • Sunrise: 7:27 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 11mphNW 311°
  • Humidity: 65%
  • UV index: 4
  • Sunrise: 7:28 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
For the next ten days, a combination of primarily dull and occasionally damp and bright weather is predicted.
Rain is forecasted for Monday through Wednesday.
Highs will stay within a very narrow margin during the next few days. Maximum temperatures will fall between 62.6°F and 66.2°F, while the lowest nighttime temperatures will be also relatively consistent, as night temperatures will lie between 50°F and 53.6°F.
With the highest temperature of 66.2°F, next Saturday will be the warmest day; with the highest temperature of 62.6°F, Monday will be the coldest day.
Updated: Oct 18, 2026 @ 06:42:29 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, patchy morning clouds will clear as the afternoon brings plenty of sunshine.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 51.8°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be a few degrees lower than the average low temperature.

On Sunday, in Half Moon Bay, sunrise will be at 7:20 am and sunset at 6:28 pm (PDT).

In Half Moon Bay, the length of the day tomorrow will be 11h and 8min.