San Mateo County (San Mateo)
Today
San Mateo County weather today
Wednesday, October 28th, 2026
18°
Partly cloudy
Low 11°
Mild temperatures are expected in San Mateo County Today, peaking at around 18 °C and dropping to 11 °C by night. It'll be quite breezy in San Mateo County Today with average wind speeds of 18.4 km/h. There's a slight chance of rain at 12%.
18° / 11°
Temp
12%
Rain
18 km/h
Wind
71%
Humidity
San Mateo County Weather Pages
San Mateo County hourly forecast for today
Scroll right to see more weather forecasts for San Mateo County today
| 12:00 AM | 01:00 AM | 02:00 AM | 03:00 AM | 04:00 AM | 05:00 AM | 06:00 AM | 07:00 AM | 07:30 AM | 08:00 AM | 09:00 AM | 10:00 AM | 11:00 AM | 12:00 PM | 01:00 PM | 02:00 PM | 03:00 PM | 04:00 PM | 05:00 PM | 06:00 PM | 06:15 PM | 07:00 PM | 08:00 PM | 09:00 PM | 10:00 PM | 11:00 PM | ||
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| weather |  | |  | | |  |  | |  |  | |  | | | | | | | | |  | | | | | | Next |
| temperatures | 13.9° | 13.5° | 12.3° | 12.9° | 12.6° | 11.1° | 12.5° | 12.6° | Sunrise | 10.9° | 14.1° | 15.6° | 15.6° | 17.3° | 17.9° | 17.8° | 17.7° | 17.3° | 17.1° | 15.5° | Sunset | 14.8° | 14.7° | 14.3° | 14.4° | 13.6° | |
| wind speed | 18 km/h | 11 km/h | 4 km/h | 7 km/h | 7 km/h | 6 km/h | 9 km/h | 10 km/h | 7 km/h | 10 km/h | 12 km/h | 7 km/h | 13 km/h | 14 km/h | 11 km/h | 17 km/h | 17 km/h | 14 km/h | 18 km/h | 17 km/h | 12 km/h | 14 km/h | 12 km/h | 5 km/h | |||
| wind degree | 335° | 351° | 15° | 54° | 55° | 53° | 45° | 46° | 50° | 35° | 18° | 24° | 11° | 356° | 328° | 331° | 317° | 302° | 312° | 325° | 315° | 323° | 325° | 310° | |||
| wind direction | NNW | N | NNE | NE | NE | NE | NE | NE | NE | NE | NNE | NNE | N | N | NNW | NNW | NW | WNW | NW | NW | NW | NW | NW | NW | |||
| Precipitation | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | |||
| chance for rain | 11% | 11% | 14% | 9% | 10% | 26% | 25% | 12% | 27% | 12% | 14% | 8% | 9% | 8% | 6% | 8% | 13% | 13% | 8% | 10% | 15% | 20% | 20% | 25% | |||
| chance for snow | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | |||
| humidity | 77% | 78% | 88% | 79% | 80% | 90% | 81% | 82% | 90% | 73% | 58% | 63% | 49% | 47% | 51% | 52% | 57% | 60% | 68% | 71% | 76% | 73% | 74% | 83% | |||
| dew point | 10° | 9.8° | 10.3° | 9.4° | 9.2° | 9.6° | 9.4° | 9.6° | 9.4° | 9.5° | 7.5° | 8.6° | 6.4° | 6.5° | 7.5° | 7.7° | 8.7° | 9.3° | 9.6° | 9.7° | 10.6° | 9.6° | 9.8° | 10.7° | |||
| visibility | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | 10 km | |||
| cloud cover | 35% | 29% | 20% | 5% | 5% | 82% | 100% | 27% | 87% | 57% | 99% | 55% | 86% | 78% | 53% | 71% | 98% | 94% | 39% | 43% | 64% | 98% | 100% | 99% | |||
| UV | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.4 | 1.1 | 2.2 | 3.1 | 3.4 | 3.1 | 2.4 | 1.4 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 |
View of San Mateo County today
Explore San Mateo County live webcam feed to see how the weather is shaping up today in San Mateo County. See what people are wearing, check out the sky, and get a sense of the atmosphere before you step outside.
Stay informed and make the most of your day with our live weather updates from San Mateo County today.
Weather in San Mateo County today
The temperature today in San Mateo County is expected to be typical for this time of year, with a forecast of 18 °C, closely aligning with the historical average for October 28th.
temperatures
18 °C
rain
0 mm
wind
18 km/h
UV
Moderate
Quick links
More San Mateo County weather pages
San Mateo County daylight overview
Today in San Mateo County, the sun rises at 07:30 and sets at 18:15, giving a total daylight duration of 10 hours and 45 minutes.
Daytime
Day length10h 45m▼ 2m 12s
Solar noon12:53 PM
Evening golden hour5:39 PM – 6:15 PM
Night
Waning GibbousIllumination 92%
Moonrise7:45 PM
Moonset11:29 AM tomorrow
San Mateo County: Sun reaches 39.4° above the horizon at midday.
Sun & MoonTop locations in San Mateo County
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What to wear today in San Mateo County? clothing recommendations
Stay comfortably stylish - your tailored guide for today's San Mateo County forecast.
Long-sleeve shirt
Long pant
Closed-toe shoes
Light jacket
The weather today in San Mateo County - FAQ
What is the maximum temperature for today in San Mateo County?
The maximum temperature for today in San Mateo County is expected to be 18° degrees. Please dress accordingly to stay comfortable throughout the day.
Will it rain today in San Mateo County?
Yes, there is a 12% chance of rain in San Mateo County today. We recommend carrying an umbrella or rain gear to stay dry.
What will be the wind speed today in San Mateo County?
The wind in San Mateo County is expected to blow at 18 km/h. This could affect outdoor activities, so plan accordingly.
How should I dress for the weather in San Mateo County today?
Given the forecast of 18 °C with a 12% chance of rain, we advise checking our "What to wear today" section for recommendations. There, you will find tailored advice to help you stay comfortable and prepared for the weather conditions in San Mateo County today.
What is the sunrise and sunset time for San Mateo County today?
The sun is expected to rise at 07:30 and set at 18:15 in San Mateo County.
How accurate is the weather forecast for San Mateo County today?
San Mateo County weather forecast for today is based on the most current and sophisticated meteorological models available. While we strive for accuracy, weather conditions can change unexpectedly, so we recommend checking for updates regularly.
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