Weather forecast for todayPort Costa, CA
Weather forecast for today
Current condition 1:48 pm PDT
- 81°F
- Feels like:81°F
Sunny
- Precipitation: 0"
- Wind: 7mphENE 60°
- Humidity: 28%
- Dewpoint: 45°F
- Pressure: 30.02"Hg
- Visibility: 9mi
- UV index: 5
- details ▼
In Port Costa, at the moment, the sun is shining uninterrupted, making for an excellent day outdoors.
The temperature is a warm 80.6°F. The current temperature is only a few degrees off the highest temperature for today.
The temperature is a warm 80.6°F. The current temperature is only a few degrees off the highest temperature for today.
Saturday Oct 17, 2026
- 86°F
- 54°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSW 201°
- Humidity: 26%
- UV index: 5
- Sunrise: 7:19 am PDT
- Sunset: 6:28 pm PDT
- details ▼
Today, on Saturday, October 17, sunny conditions are expected to continue.
Temperature values will vary noticeably, extending from a humid 86°F to a fresh 53.6°F.
Temperatures are higher than average, more in line with September's norm of 80.1°F than with October's 72.9°F.
Sunrise was at 7:19 am and sunset will be at 6:28 pm; the daylight will last for 11h and 9min.
Temperature values will vary noticeably, extending from a humid 86°F to a fresh 53.6°F.
Temperatures are higher than average, more in line with September's norm of 80.1°F than with October's 72.9°F.
Sunrise was at 7:19 am and sunset will be at 6:28 pm; the daylight will last for 11h and 9min.
Hourly overview
Hourly temperatures
Warmest hour: 5 pm 86°C.
Coldest hour: 11 pm 63°C.
Coldest hour: 11 pm 63°C.
Chance of precipitation
Highest chance: 10 pm - 11 pm 1%.
Hourly weather forecast
- 2 pm
- 81°F
- Feels like:81°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphE 82°
- Humidity: 26%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 3 pm
- 84°F
- Feels like:84°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphESE 107°
- Humidity: 24%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 84°F
- Feels like:84°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSW 231°
- Humidity: 23%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 5 pm
- 86°F
- Feels like:86°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphWSW 241°
- Humidity: 23%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 82°F
- Feels like:82°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphWSW 255°
- Humidity: 28%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:28 pm
- 7 pm
- 75°F
- Feels like:75°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphWSW 253°
- Humidity: 36%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 8 pm
- 72°F
- Feels like:72°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphWSW 257°
- Humidity: 43%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 9 pm
- 68°F
- Feels like:68°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphWSW 240°
- Humidity: 52%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 64°F
- Feels like:64°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphWSW 237°
- Humidity: 61%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 11 pm
- 63°F
- Feels like:63°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphSW 225°
- Humidity: 63%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
For the rest of Saturday, sunshine is expected.
The temperature will vary between a maximum of 86°F and a minimum of 62.6°F. The hottest part of the day is anticipated around 5 pm.
Today, the temperature will be closer to September's norm than to October's average of 72.9°F. The temperature low is forecasted to be comparable to the usual October value of 54°F.
The temperature will vary between a maximum of 86°F and a minimum of 62.6°F. The hottest part of the day is anticipated around 5 pm.
Today, the temperature will be closer to September's norm than to October's average of 72.9°F. The temperature low is forecasted to be comparable to the usual October value of 54°F.
Updated: Oct 17, 2026 @ 20:48:08 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
The temperature at 1:48 pm PDT is 80.6°F.
On Saturday, sunshine is expected with little to no cloud cover.
Today, the highest temperature will be 86°F, while the lowest temperature will be 53.6°F.
The highest temperature will be uncommonly higher than the average maximum of 72.9°F in October. Today, the lowest temperature will be in line with the average low temperature.
The highest temperature will be uncommonly higher than the average maximum of 72.9°F in October. Today, the lowest temperature will be in line with the average low temperature.
On Saturday, in Port Costa, sunrise was at 7:19 am and sunset will be at 6:28 pm (PDT).
In Port Costa, today, there will be 11h and 9min of daylight.
Port Costa, California, USA
- en: Port Costa, California, USA
- es: Port Costa, California, EE.UU.
- hr: Port Kosta, Kalifornija, SAD
- mk: Port Kosta, Kalifornija, SAD
- sr: Port Kosta, Kalifornija, SAD
- zh: Port Costa, 加利福尼亚州, 美国
- Latitude: 38.046310°
- Longitude: -122.183300°
- Elevation: 16 ft
- Current time: 1:48pm PDT
- Sunrise: 7:19 am PDT
- Sunset: 6:28 pm PDT
- Timezone: America/Los_Angeles
Nearby Port Costa, California, USA
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