Solar Energy & Solar Power Resources

Solar Power in 99251 (Spokane, WA)

Solar Energy in 99251

Sorry, historical solar radition values for 99251 are currently unavailable, please check back later.

Solar Panels in 99251

Solar panels in 99251 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99251

The total length of the day in 99251 (Spokane, WA) today (November 06, 2026) will be 9 hours and 43 minutes. [More]

Solar Energy in 99251 (Spokane, WA)

Solar Energy Data for 99251

See the chart below to see how different types of solar panel installations compare in 99251.

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

Solar Energy Analysis for 99251

Sorry, it is not possible to complete our solar energy analysis for 99251 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 99251

Solar Radiation Data in 99251

See the chart below for monthly solar radiation levels in 99251.

Sorry, data is not currently available.

Solar Radiation Analysis for 99251

Sorry, it is not possible to complete our solar radiation analysis for 99251 at this time.

Historical solar radiation data for 99251 is not currently available.

Please check back later.

Solar Power Comparison: 99251 vs. the U.S.

Solar Power Levels in 99251

Sorry, solar radiation data for 99251 is not currently available.

Solar Power: 99251 vs. the U.S.

Below is a month-by-month comparison of how average 99251 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 Washington is not currently available.

Solar Data & Statistics for 99251

Sunrise / Sunset in 99251

Sunrise/Sunset for November 06, 2026 ^[2]
- Sunrise: 6:41 am
- Sunset: 4:24 pm
- Length of Day: 9:43

Best Months for Solar in 99251

Monthly data not currently available.

Solar Panel Installs in 99251

We do not have data on solar panel installations in ZIP Code 99251 at the current time.

Solar Power Output in 99251

The Power of Solar in 99251

Monthly AC solar system output averages for 99251. Month-by-month solar power, as ranked by AC output, in 99251. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99251

Sorry, it is not possible to complete our solar radiation analysis for 99251 at this time.

Historical solar radiation data for 99251 is not currently available.

Please check back later.

Weather Forecast for 99251 ^[5]

Fri Nov 6

40°F

Light Rain
Min: 37°F
Max: 52°F

Gentle Breeze: 8 mps SSW
Precip.: Chance of Rain
Humidity: 93%
Cloud cover: 100%

Sat Nov 7

52°F

Broken Clouds
Min: 38°F
Max: 58°F

Light breeze: 5 mps NE
Precip.: n/a
Humidity: 77%
Cloud cover: 81%

Sun Nov 8

55°F

Light Rain
Min: 40°F
Max: 57°F

Gentle Breeze: 11 mps SSW
Precip.: Chance of Rain
Humidity: 56%
Cloud cover: 89%

Mon Nov 9

43°F

Light Rain
Min: 35°F
Max: 50°F

Calm: 2 mps ENE
Precip.: Chance of Rain
Humidity: 87%
Cloud cover: 100%

Tue Nov 10

50°F

Light Rain
Min: 43°F
Max: 53°F

Light breeze: 6 mps S
Precip.: Chance of Rain
Humidity: 92%
Cloud cover: 100%

Wed Nov 11

46°F

Overcast Clouds
Min: 39°F
Max: 58°F

Calm: 3 mps NNE
Precip.: n/a
Humidity: 98%
Cloud cover: 88%

More about 99251

About 99251

The ZIP code 99251 is associated with the city of Spokane in Spokane County in Washington.

99251 Solar Energy & Power

To learn more about solar energy and solar power in 99251, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.