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 (November 13, 2025) will be 9 hours and 26 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 November 13, 2025 ^[2]
- Sunrise: 6:51 am
- Sunset: 4:17 pm
- Length of Day: 9:26

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]

Thu Nov 13

44°F

Light Rain
Min: 40°F
Max: 48°F

Gentle Breeze: 8 mps SSW
Precip.: Chance of Rain
Humidity: 72%
Cloud cover: 100%

Fri Nov 14

50°F

Light Rain
Min: 46°F
Max: 52°F

Moderate breeze: 17 mps SW
Precip.: Chance of Rain
Humidity: 71%
Cloud cover: 99%

Sat Nov 15

47°F

Overcast Clouds
Min: 44°F
Max: 48°F

Gentle Breeze: 11 mps SSW
Precip.: n/a
Humidity: 69%
Cloud cover: 100%

Sun Nov 16

46°F

Light Rain
Min: 43°F
Max: 47°F

Light breeze: 6 mps NNE
Precip.: Chance of Rain
Humidity: 77%
Cloud cover: 100%

Mon Nov 17

46°F

Light Rain
Min: 42°F
Max: 48°F

Light breeze: 6 mps W
Precip.: Chance of Rain
Humidity: 82%
Cloud cover: 100%

Tue Nov 18

38°F

Rain And Snow
Min: 34°F
Max: 44°F

Gentle Breeze: 12 mps SW
Precip.: Chance of Rain
Humidity: 90%
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.