Our Proprietary 10-Day Forecast

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Current warnings over Bethel Island, California
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Bethel Island, California red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Bethel Island, California red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Contra Costa County, CA

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Bethel Island, California

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Bethel Island, CA please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Bethel Island, CA

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Bethel Island, CA, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Bethel Island, California

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Contra Costa County, California

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Bethel Island, California Climate Summary

General Climate

    •   Bethel Island has a Mediterranean climate, characterized by warm, dry summers and mild, wet winters.
    •   The average annual temperature is 59.5°F (15.3°C).
    •   The average annual precipitation is 17.62 inches (44.76 cm).

Temperature

    •   The warmest month is July, with an average temperature of 76.2°F (24.6°C).
    •   The coldest month is January, with an average temperature of 45.2°F (7.3°C).
    •   The average daily temperature range is 23.2°F (12.9°C).

Precipitation

    •   The wettest month is February, with an average precipitation of 3.06 inches (7.77 cm).
    •   The driest month is July, with an average precipitation of 0.04 inches (0.10 cm).
    •   The average annual precipitation is 17.62 inches (44.76 cm).

Sunshine

    •   The sunniest month is July, with an average of 11 hours of sunshine per day.
    •   The cloudiest month is December, with an average of 5 hours of sunshine per day.
    •   The average annual sunshine is 8 hours per day.

Wind

    •   The prevailing wind direction is from the west.
    •   The average wind speed is 9 mph (14 km/h).

Humidity

    •   The average annual relative humidity is 73%.
    •   The most humid month is January, with an average relative humidity of 80%.
    •   The least humid month is July, with an average relative humidity of 60%.

Climate Extremes

    •   The highest recorded temperature was 115°F (46.1°C) on July 24, 2006.
    •   The lowest recorded temperature was 19°F (-7.2°C) on December 22, 1990.
    •   The greatest 24-hour precipitation was 6.85 inches (17.40 cm) on January 4, 1982.
    •   The greatest monthly precipitation was 14.67 inches (37.27 cm) in February 1998.
    •   The greatest annual precipitation was 34.47 inches (87.56 cm) in 1983.

Facts & Historical Information
(made with AI, use with caution)
Bethel Island, nestled in the Sacramento-San Joaquin River Delta, boasts a rich natural and historical tapestry.

Natural History

    •   The island's unique geography, formed by the confluence of the Sacramento and San Joaquin Rivers, creates a diverse ecosystem with over 200 bird species, including the endangered California black rail.

    •   The surrounding wetlands provide a crucial habitat for fish, amphibians, and reptiles, including the native western pond turtle.

    •   The island's fertile soil supports a variety of agriculture, including asparagus, tomatoes, and corn.

Science

    •   Bethel Island is home to the Bethel Island Fish Hatchery, one of the largest inland fish hatcheries in California, which raises millions of salmon and steelhead trout annually.

    •   The island's proximity to the San Francisco Bay Area has made it a popular destination for scientific research, particularly in the fields of ecology and environmental conservation.

Personalities

    •   Bethel Island was named after Bethel Methodist Church, which was founded by early settlers in 1858.

    •   The island's history is intertwined with the California Gold Rush, as miners used it as a stopover on their way to the gold fields.

    •   In the early 20th century, Bethel Island became a popular resort destination, attracting visitors with its scenic beauty and recreational opportunities.

Tourist Attractions
1.Black Diamond Mines Regional Preserve:

A historic park with hiking trails, picnic areas, and a museum showcasing the region's coal mining past.

2.Big Break Regional Shoreline:

A scenic waterfront park with a sandy beach, picnic areas, and a boat launch.

3.Brentwood Corn Maze and Pumpkin Patch:

A seasonal attraction offering family-friendly activities such as a corn maze, pumpkin picking, and hayrides.

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