Solar Energy & Solar Power Resources

Solar Power in 99203 (Spokane, WA)

Solar Energy in 99203

Sorry, historical solar radition values for 99203 are currently unavailable, please check back later.

Solar Panels in 99203

Solar panels in 99203 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99203

The total length of the day in 99203 (Spokane, WA) today (July 09, 2025) will be 15 hours and 49 minutes. [More]

Solar Energy in 99203 (Spokane, WA)

Solar Energy Data for 99203

See the chart below to see how different types of solar panel installations compare in 99203.

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

Solar Energy Analysis for 99203

Sorry, it is not possible to complete our solar energy analysis for 99203 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 99203

Solar Radiation Data in 99203

See the chart below for monthly solar radiation levels in 99203.

Sorry, data is not currently available.

Solar Radiation Analysis for 99203

Sorry, it is not possible to complete our solar radiation analysis for 99203 at this time.

Historical solar radiation data for 99203 is not currently available.

Please check back later.

Solar Power Comparison: 99203 vs. the U.S.

Solar Power Levels in 99203

Sorry, solar radiation data for 99203 is not currently available.

Solar Power: 99203 vs. the U.S.

Below is a month-by-month comparison of how average 99203 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 99203

Sunrise / Sunset in 99203

Sunrise/Sunset for July 09, 2025 ^[2]
- Sunrise: 5:00 am
- Sunset: 8:49 pm
- Length of Day: 15:49

Best Months for Solar in 99203

Monthly data not currently available.

Solar Panel Installs in 99203

We do not have data on solar panel installations in ZIP Code 99203 at the current time.

Solar Power Output in 99203

The Power of Solar in 99203

Monthly AC solar system output averages for 99203. Month-by-month solar power, as ranked by AC output, in 99203. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99203

Sorry, it is not possible to complete our solar radiation analysis for 99203 at this time.

Historical solar radiation data for 99203 is not currently available.

Please check back later.

Weather Forecast for 99203 ^[5]

Wed Jul 9

81°F

Few Clouds
Min: 64°F
Max: 90°F

Moderate breeze: 16 mps WSW
Precip.: n/a
Humidity: 28%
Cloud cover: 14%

Thu Jul 10

78°F

Scattered Clouds
Min: 60°F
Max: 81°F

Moderate breeze: 14 mps SSW
Precip.: n/a
Humidity: 35%
Cloud cover: 28%

Fri Jul 11

82°F

Overcast Clouds
Min: 59°F
Max: 88°F

Gentle Breeze: 8 mps W
Precip.: n/a
Humidity: 21%
Cloud cover: 100%

Sat Jul 12

82°F

Overcast Clouds
Min: 65°F
Max: 90°F

Gentle Breeze: 10 mps WSW
Precip.: n/a
Humidity: 28%
Cloud cover: 89%

Sun Jul 13

83°F

Sky Is Clear
Min: 66°F
Max: 92°F

Moderate breeze: 13 mps WSW
Precip.: n/a
Humidity: 31%
Cloud cover: 0%

Mon Jul 14

81°F

Sky Is Clear
Min: 67°F
Max: 89°F

Gentle Breeze: 12 mps NE
Precip.: n/a
Humidity: 29%
Cloud cover: 8%

More about 99203

About 99203

The ZIP code 99203 is associated with the city of Spokane in Spokane County in Washington.

99203 Solar Energy & Power

To learn more about solar energy and solar power in 99203, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.