Our Proprietary 10-Day Forecast

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Current warnings over Lake San Marcos, 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 Lake San Marcos, 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 Lake San Marcos, 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 San Diego 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 Lake San Marcos, 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 Lake San Marcos, 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 Lake San Marcos, 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 Lake San Marcos, 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 Lake San Marcos, 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 San Diego 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.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 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.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Lake San Marcos, CA Climate Summary

Temperature

    •   Average annual temperature: 62.5°F (17°C)
    •   Average summer temperature: 75°F (24°C)
    •   Average winter temperature: 50°F (10°C)
    •   Highest recorded temperature: 117°F (47°C)
    •   Lowest recorded temperature: 20°F (-7°C)

Precipitation

    •   Average annual precipitation: 14.5 inches (37 cm)
    •   Average number of rainy days per year: 35
    •   Wettest month: February (2.5 inches)
    •   Driest month: July (0.1 inches)

Humidity

    •   Average annual humidity: 70%
    •   Highest humidity: January (75%)
    •   Lowest humidity: August (60%)

Wind

    •   Average annual wind speed: 5 mph (8 km/h)
    •   Prevailing wind direction: West

Sunshine

    •   Average annual sunshine: 280 days
    •   Sunniest month: July (31 days)
    •   Cloudiest month: December (18 days)

Climate Type

    •   Mediterranean climate

Overall

Lake San Marcos, CA has a mild climate with warm, dry summers and cool, wet winters. The area is known for its beautiful scenery, including the San Marcos Mountains and Lake San Marcos itself. The climate is ideal for outdoor activities year-round.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Lake San Marcos is a man-made reservoir created in 1948 by damming the San Marcos Creek.

    •   The lake is home to a diverse array of fish species, including largemouth bass, bluegill, and catfish.

    •   The surrounding hills are covered in chaparral vegetation, providing habitat for deer, coyotes, and bobcats.

Science

    •   The lake has been the site of numerous scientific studies on water quality, fish populations, and the impact of human activity on the ecosystem.

    •   In the 1970s, the lake was used as a test site for the development of artificial reefs to enhance fish habitat.

Personalities

    •   The lake is named after San Marcos, a Spanish saint who was known for his healing powers.

    •   The area around the lake was originally inhabited by the Luiseño Native Americans.

    •   In the early 1900s, the lake was a popular destination for fishing, swimming, and boating.

Tourist Attractions
1.Lake San Marcos:

This beautiful lake is a popular spot for swimming, boating, fishing, and picnicking. There are also several hiking trails around the lake, offering stunning views of the surrounding mountains.

2.San Elijo Lagoon Ecological Reserve:

This 1,000-acre reserve is home to a variety of wildlife, including birds, fish, and reptiles. There are several hiking trails through the reserve, and visitors can also enjoy kayaking or canoeing on the lagoon.

3.Double Peak Park:

This park offers stunning views of the surrounding mountains and valleys. There are several hiking trails in the park, ranging from easy to challenging. Visitors can also enjoy picnicking or simply relaxing in the park's beautiful surroundings.

Nearby Cities:

San Marcos, CA
Vista, CAEscondido, CA
Rancho Santa Fe, CAEncinitas, CA
Carlsbad, CASolana Beach, CA
Oceanside, CADel Mar, CA
Valley Center, CABonsall, CA
San Pasqual, CAPoway, CA
Mira Mesa, CAFallbrook, CA
La Jolla, CARamona, CA
Los Angeles, CA
San Diego, CALong Beach, CA
Anaheim, CASanta Ana, CA
Riverside, CAChula Vista, CA
Irvine, CASan Bernardino, CA
Fontana, CAMoreno Valley, CA
Huntington Beach, CA