Solar Energy & Solar Power Resources

Solar Power in 92078 (San Marcos, CA)

Solar Energy in 92078

Sorry, historical solar radition values for 92078 are currently unavailable, please check back later.

Solar Panels in 92078

Solar panels in 92078 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 92078

The total length of the day in 92078 (San Marcos, CA) today (September 17, 2025) will be 12 hours and 21 minutes. [More]

Solar Energy in 92078 (San Marcos, CA)

Solar Energy Data for 92078

See the chart below to see how different types of solar panel installations compare in 92078.

Historical solar power output data for San Marcos is not currently available.

Solar Energy Analysis for 92078

Sorry, it is not possible to complete our solar energy analysis for 92078 at this time.

Please check back later.

Solar Energy Glossary

Global Horizontal Irradiance (GHI)

Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.

Direct Normal Irradiance (DNI)

Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.

Average Tilt at Latitude (ATaL)

Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.

Solar Radiation Levels in 92078

Solar Radiation Data in 92078

See the chart below for monthly solar radiation levels in 92078.

Sorry, data is not currently available.

Solar Radiation Analysis for 92078

Sorry, it is not possible to complete our solar radiation analysis for 92078 at this time.

Historical solar radiation data for 92078 is not currently available.

Please check back later.

Solar Power Comparison: 92078 vs. the U.S.

Solar Power Levels in 92078

Sorry, solar radiation data for 92078 is not currently available.

Solar Power: 92078 vs. the U.S.

Below is a month-by-month comparison of how average 92078 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for California is not currently available.

Solar Data & Statistics for 92078

Sunrise / Sunset in 92078

Sunrise/Sunset for September 17, 2025 ^[2]
- Sunrise: 6:32 am
- Sunset: 6:53 pm
- Length of Day: 12:21

Best Months for Solar in 92078

Monthly data not currently available.

Solar Panel Installs in 92078

We do not have data on solar panel installations in ZIP Code 92078 at the current time.

Solar Power Output in 92078

The Power of Solar in 92078

Monthly AC solar system output averages for 92078. Month-by-month solar power, as ranked by AC output, in 92078. ^[2]

AC output data is not currently available.

Solar Output Analysis for 92078

Sorry, it is not possible to complete our solar radiation analysis for 92078 at this time.

Historical solar radiation data for 92078 is not currently available.

Please check back later.

Weather Forecast for 92078 ^[5]

Wed Sep 17

78°F

Light Rain
Min: 70°F
Max: 84°F

Gentle Breeze: 11 mps WSW
Precip.: Chance of Rain
Humidity: 64%
Cloud cover: 20%

Thu Sep 18

79°F

Moderate Rain
Min: 71°F
Max: 80°F

Moderate breeze: 13 mps SW
Precip.: Chance of Rain
Humidity: 63%
Cloud cover: 77%

Fri Sep 19

78°F

Scattered Clouds
Min: 68°F
Max: 78°F

Gentle Breeze: 12 mps WSW
Precip.: n/a
Humidity: 66%
Cloud cover: 50%

Sat Sep 20

77°F

Sky Is Clear
Min: 66°F
Max: 78°F

Gentle Breeze: 11 mps W
Precip.: n/a
Humidity: 63%
Cloud cover: 0%

Sun Sep 21

81°F

Broken Clouds
Min: 67°F
Max: 81°F

Gentle Breeze: 11 mps WSW
Precip.: n/a
Humidity: 51%
Cloud cover: 65%

Mon Sep 22

82°F

Sky Is Clear
Min: 68°F
Max: 82°F

Gentle Breeze: 10 mps W
Precip.: n/a
Humidity: 47%
Cloud cover: 4%

More about 92078

About 92078

The ZIP code 92078 is associated with the city of San Marcos in San Diego County in California.

92078 Solar Energy & Power

To learn more about solar energy and solar power in 92078, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.