Solar Energy & Solar Power Resources

Solar Power in 99020 (Marshall, WA)

Solar Energy in 99020

Sorry, historical solar radition values for 99020 are currently unavailable, please check back later.

Solar Panels in 99020

Solar panels in 99020 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 99020

The total length of the day in 99020 (Marshall, WA) today (April 24, 2026) will be 14 hours and 12 minutes. [More]

Solar Energy in 99020 (Marshall, WA)

Solar Energy Data for 99020

See the chart below to see how different types of solar panel installations compare in 99020.

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

Solar Energy Analysis for 99020

Sorry, it is not possible to complete our solar energy analysis for 99020 at this time.

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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 99020

Solar Radiation Data in 99020

See the chart below for monthly solar radiation levels in 99020.

Sorry, data is not currently available.

Solar Radiation Analysis for 99020

Sorry, it is not possible to complete our solar radiation analysis for 99020 at this time.

Historical solar radiation data for 99020 is not currently available.

Please check back later.

Solar Power Comparison: 99020 vs. the U.S.

Solar Power Levels in 99020

Sorry, solar radiation data for 99020 is not currently available.

Solar Power: 99020 vs. the U.S.

Below is a month-by-month comparison of how average 99020 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 99020

Sunrise / Sunset in 99020

Sunrise/Sunset for April 24, 2026 ^[2]
- Sunrise: 5:42 am
- Sunset: 7:54 pm
- Length of Day: 14:12

Best Months for Solar in 99020

Monthly data not currently available.

Solar Panel Installs in 99020

We do not have data on solar panel installations in ZIP Code 99020 at the current time.

Solar Power Output in 99020

The Power of Solar in 99020

Monthly AC solar system output averages for 99020. Month-by-month solar power, as ranked by AC output, in 99020. ^[2]

AC output data is not currently available.

Solar Output Analysis for 99020

Sorry, it is not possible to complete our solar radiation analysis for 99020 at this time.

Historical solar radiation data for 99020 is not currently available.

Please check back later.

Weather Forecast for 99020 ^[5]

Fri Apr 24

46°F

Scattered Clouds
Min: 30°F
Max: 53°F

Gentle Breeze: 9 mps SSW
Precip.: n/a
Humidity: 38%
Cloud cover: 28%

Sat Apr 25

51°F

Broken Clouds
Min: 34°F
Max: 53°F

Light breeze: 7 mps SW
Precip.: n/a
Humidity: 29%
Cloud cover: 73%

Sun Apr 26

54°F

Scattered Clouds
Min: 37°F
Max: 58°F

Gentle Breeze: 11 mps ESE
Precip.: n/a
Humidity: 33%
Cloud cover: 42%

Mon Apr 27

54°F

Light Rain
Min: 38°F
Max: 60°F

Moderate breeze: 13 mps SW
Precip.: Chance of Rain
Humidity: 47%
Cloud cover: 65%

Tue Apr 28

47°F

Light Rain
Min: 43°F
Max: 49°F

Moderate breeze: 15 mps SSW
Precip.: Chance of Rain
Humidity: 71%
Cloud cover: 100%

Wed Apr 29

53°F

Overcast Clouds
Min: 44°F
Max: 61°F

Gentle Breeze: 8 mps NE
Precip.: n/a
Humidity: 55%
Cloud cover: 100%

More about 99020

About 99020

The ZIP code 99020 is associated with the city of Marshall in Spokane County in Washington.

99020 Solar Energy & Power

To learn more about solar energy and solar power in 99020, or for more solar-related resources for WA, check out the U.S. Energy Information Administration.