Solar Energy & Solar Power Resources

Solar Power in 91786 (Upland, CA)

Solar Energy in 91786

Sorry, historical solar radition values for 91786 are currently unavailable, please check back later.

Solar Panels in 91786

Solar panels in 91786 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91786

The total length of the day in 91786 (Upland, CA) today (September 16, 2026) will be 12 hours and 24 minutes. [More]

Solar Energy in 91786 (Upland, CA)

Solar Energy Data for 91786

See the chart below to see how different types of solar panel installations compare in 91786.

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

Solar Energy Analysis for 91786

Sorry, it is not possible to complete our solar energy analysis for 91786 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 91786

Solar Radiation Data in 91786

See the chart below for monthly solar radiation levels in 91786.

Sorry, data is not currently available.

Solar Radiation Analysis for 91786

Sorry, it is not possible to complete our solar radiation analysis for 91786 at this time.

Historical solar radiation data for 91786 is not currently available.

Please check back later.

Solar Power Comparison: 91786 vs. the U.S.

Solar Power Levels in 91786

Sorry, solar radiation data for 91786 is not currently available.

Solar Power: 91786 vs. the U.S.

Below is a month-by-month comparison of how average 91786 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 91786

Sunrise / Sunset in 91786

Sunrise/Sunset for September 16, 2026 ^[2]
- Sunrise: 6:33 am
- Sunset: 6:57 pm
- Length of Day: 12:24

Best Months for Solar in 91786

Monthly data not currently available.

Solar Panel Installs in 91786

We do not have data on solar panel installations in ZIP Code 91786 at the current time.

Solar Power Output in 91786

The Power of Solar in 91786

Monthly AC solar system output averages for 91786. Month-by-month solar power, as ranked by AC output, in 91786. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91786

Sorry, it is not possible to complete our solar radiation analysis for 91786 at this time.

Historical solar radiation data for 91786 is not currently available.

Please check back later.

Weather Forecast for 91786 ^[5]

Wed Sep 16

72°F

Sky Is Clear
Min: 59°F
Max: 76°F

Light breeze: 6 mps SW
Precip.: n/a
Humidity: 43%
Cloud cover: 0%

Thu Sep 17

71°F

Sky Is Clear
Min: 57°F
Max: 75°F

Light breeze: 7 mps WSW
Precip.: n/a
Humidity: 45%
Cloud cover: 1%

Fri Sep 18

71°F

Sky Is Clear
Min: 57°F
Max: 75°F

Light breeze: 7 mps WSW
Precip.: n/a
Humidity: 42%
Cloud cover: 0%

Sat Sep 19

72°F

Sky Is Clear
Min: 58°F
Max: 79°F

Light breeze: 6 mps WSW
Precip.: n/a
Humidity: 51%
Cloud cover: 0%

Sun Sep 20

71°F

Overcast Clouds
Min: 62°F
Max: 77°F

Light breeze: 5 mps SW
Precip.: n/a
Humidity: 50%
Cloud cover: 99%

Mon Sep 21

66°F

Sky Is Clear
Min: 58°F
Max: 73°F

Gentle Breeze: 8 mps WSW
Precip.: n/a
Humidity: 67%
Cloud cover: 10%

More about 91786

About 91786

The ZIP code 91786 is associated with the city of Upland in San Bernardino County in California.

91786 Solar Energy & Power

To learn more about solar energy and solar power in 91786, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.