Weather forecast for tomorrowSan Mateo, CA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 66°F
- 54°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 14mphW 277°
- Humidity: 74%
- UV index: 5
- Sunrise: 7:20 am PDT
- Sunset: 6:28 pm PDT
- details ▼
Tomorrow, on Sunday, moments of sunshine will break through the patchy clouds.
Temperature fluctuations between an enjoyable 66.2°F and a crisp 53.6°F are predicted.
The temperature for tomorrow is predicted to correspond with the average October peak of 67.8°F.
Sunrise will be at 7:20 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 7min.
Temperature fluctuations between an enjoyable 66.2°F and a crisp 53.6°F are predicted.
The temperature for tomorrow is predicted to correspond with the average October peak of 67.8°F.
Sunrise will be at 7:20 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 7min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 55°C.
Coldest hour: 6 am 55°C.
Chance of precipitation
Highest chance: 6 am 8%.
Hourly weather forecast
- 12 am
- 61°F
- Feels like:61°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphW 267°
- Humidity: 73%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 59°F
- Feels like:59°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphW 264°
- Humidity: 81%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 57°F
- Feels like:57°F
Mostly Clear
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 4mphW 264°
- Humidity: 86%
- Pressure: 29.97"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 6 am
- 55°F
- Feels like:55°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 4mphWSW 259°
- Humidity: 88%
- Pressure: 29.97"Hg
- Visibility: 3mi
- UV index: 0
- details ▼
Sunrise: 7:20 am
- 8 am
- 55°F
- Feels like:55°F
Mostly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 4mphWSW 258°
- Humidity: 87%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 61°F
- Feels like:61°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphW 261°
- Humidity: 84%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 64°F
- Feels like:64°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphWNW 282°
- Humidity: 72%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 2 pm
- 66°F
- Feels like:66°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphWNW 288°
- Humidity: 66%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 14mphWNW 285°
- Humidity: 66%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 63°F
- Feels like:61°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 13mphWNW 284°
- Humidity: 68%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:28 pm
- 8 pm
- 57°F
- Feels like:55°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphWNW 284°
- Humidity: 81%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 57°F
- Feels like:55°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 8mphWNW 284°
- Humidity: 82%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, a combination of overcast and mostly clear weather is expected.
The temperature will be between the lowest temperature of 55.4°F and the highest temperature of 66.2°F. The warmest part of the day will be from 1 pm to 3 pm.
The maximum temperature will be comparable to the average high of 67.8°F in October. The expected low will be also resembling the average minimum in October, which is 55.2°F.
The temperature will be between the lowest temperature of 55.4°F and the highest temperature of 66.2°F. The warmest part of the day will be from 1 pm to 3 pm.
The maximum temperature will be comparable to the average high of 67.8°F in October. The expected low will be also resembling the average minimum in October, which is 55.2°F.
Updated: Oct 17, 2026 @ 15:34:20 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in San Mateo, mostly clear with scattered clouds is expected.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 53.6°F.
The highest temperature will be in line with the average maximum of 67.8°F in October. The lowest temperature will be also in line with the average low of 55.2°F.
The highest temperature will be in line with the average maximum of 67.8°F in October. The lowest temperature will be also in line with the average low of 55.2°F.
On Sunday, in San Mateo, sunrise will be at 7:20 am and sunset at 6:28 pm (PDT).
In San Mateo, tomorrow, there will be 11h and 7min of daylight.
