Solar Energy & Solar Power Resources

Solar Power in 91785 (Upland, CA)

Solar Energy in 91785

Sorry, historical solar radition values for 91785 are currently unavailable, please check back later.

Solar Panels in 91785

Solar panels in 91785 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91785

The total length of the day in 91785 (Upland, CA) today (April 02, 2026) will be 12 hours and 39 minutes. [More]

Solar Energy in 91785 (Upland, CA)

Solar Energy Data for 91785

See the chart below to see how different types of solar panel installations compare in 91785.

Historical solar power output data for Upland is not currently available.

Solar Energy Analysis for 91785

Sorry, it is not possible to complete our solar energy analysis for 91785 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 91785

Solar Radiation Data in 91785

See the chart below for monthly solar radiation levels in 91785.

Sorry, data is not currently available.

Solar Radiation Analysis for 91785

Sorry, it is not possible to complete our solar radiation analysis for 91785 at this time.

Historical solar radiation data for 91785 is not currently available.

Please check back later.

Solar Power Comparison: 91785 vs. the U.S.

Solar Power Levels in 91785

Sorry, solar radiation data for 91785 is not currently available.

Solar Power: 91785 vs. the U.S.

Below is a month-by-month comparison of how average 91785 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 91785

Sunrise / Sunset in 91785

Sunrise/Sunset for April 02, 2026 ^[2]
- Sunrise: 6:34 am
- Sunset: 7:13 pm
- Length of Day: 12:39

Best Months for Solar in 91785

Monthly data not currently available.

Solar Panel Installs in 91785

We do not have data on solar panel installations in ZIP Code 91785 at the current time.

Solar Power Output in 91785

The Power of Solar in 91785

Monthly AC solar system output averages for 91785. Month-by-month solar power, as ranked by AC output, in 91785. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91785

Sorry, it is not possible to complete our solar radiation analysis for 91785 at this time.

Historical solar radiation data for 91785 is not currently available.

Please check back later.

Weather Forecast for 91785 ^[5]

Thu Apr 2

63°F

Light Rain
Min: 54°F
Max: 65°F

Gentle Breeze: 11 mps SSW
Precip.: Chance of Rain
Humidity: 60%
Cloud cover: 100%

Fri Apr 3

71°F

Overcast Clouds
Min: 57°F
Max: 76°F

Moderate breeze: 15 mps NNE
Precip.: n/a
Humidity: 10%
Cloud cover: 100%

Sat Apr 4

79°F

Overcast Clouds
Min: 61°F
Max: 83°F

Gentle Breeze: 9 mps WSW
Precip.: n/a
Humidity: 8%
Cloud cover: 98%

Sun Apr 5

78°F

Sky Is Clear
Min: 65°F
Max: 82°F

Gentle Breeze: 10 mps SW
Precip.: n/a
Humidity: 12%
Cloud cover: 5%

Mon Apr 6

72°F

Overcast Clouds
Min: 64°F
Max: 76°F

Gentle Breeze: 11 mps SW
Precip.: n/a
Humidity: 29%
Cloud cover: 100%

Tue Apr 7

77°F

Scattered Clouds
Min: 64°F
Max: 82°F

Gentle Breeze: 12 mps SW
Precip.: n/a
Humidity: 28%
Cloud cover: 50%

More about 91785

About 91785

The ZIP code 91785 is associated with the city of Upland in San Bernardino County in California.

91785 Solar Energy & Power

To learn more about solar energy and solar power in 91785, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.