Solar Energy & Solar Power Resources

Solar Energy in Johnston, IA

Solar Energy in Johnston

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

Solar Panels in Johnston

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

Sunrise & Sunset in Johnston

The total length of the day in Johnston, IA today (October 21, 2026) will be 10 hours and 50 minutes. [More]

Solar Power in Johnston, IA

Solar Energy Data in Johnston, IA

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

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

Solar Energy Analysis for Johnston, IA

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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 Johnston

Solar Radiation Data in Johnston, IA

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

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Solar Radiation Analysis for Johnston, IA

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Historical solar radiation data for Johnston is not currently available.

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

Solar Power Levels in Johnston

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

Solar Power: Johnston vs. the U.S.

Below is a month-by-month comparison of how average Johnston 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 Iowa is not currently available.

Solar Data & Statistics for Johnston

Sunrise / Sunset in Johnston

Sunrise/Sunset for October 21, 2026 ^[2]
- Sunrise: 7:34 am
- Sunset: 6:24 pm
- Length of Day: 10:50

Best Months for Solar in Johnston

Monthly data not currently available.

Solar Panel Installs in Johnston

We do not currently have data on solar panel installations in the city of Johnston, IA at this current time.

Solar Power Output in Johnston

The Power of Solar in Johnston, IA

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

AC output data is not currently available.

Solar Output Analysis for Johnston, IA

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

Historical solar radiation data for Johnston is not currently available.

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Cost of Utilities in Johnston

Johnston Electricity Costs

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Solar Power Poll: Johnston

Vote now: Given all of the data and analysis provided for Johnston, is solar power a good choice for residents of this city?

Johnston Natural Gas Costs

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Weather Forecast for Johnston, IA ^[5]

Wed Oct 21

71°F

Sky Is Clear
Min: 50°F
Max: 76°F

Light breeze: 6 mps SSW
Precip.: n/a
Humidity: 58%
Cloud cover: 4%

Thu Oct 22

72°F

Sky Is Clear
Min: 53°F
Max: 77°F

Light breeze: 7 mps S
Precip.: n/a
Humidity: 63%
Cloud cover: 0%

Fri Oct 23

71°F

Scattered Clouds
Min: 54°F
Max: 73°F

Gentle Breeze: 11 mps SSE
Precip.: n/a
Humidity: 60%
Cloud cover: 40%

Sat Oct 24

68°F

Few Clouds
Min: 58°F
Max: 74°F

Gentle Breeze: 11 mps SSE
Precip.: n/a
Humidity: 59%
Cloud cover: 15%

Sun Oct 25

70°F

Scattered Clouds
Min: 56°F
Max: 72°F

Light breeze: 5 mps S
Precip.: n/a
Humidity: 63%
Cloud cover: 43%

Mon Oct 26

68°F

Light Rain
Min: 55°F
Max: 70°F

Light breeze: 6 mps SSE
Precip.: Chance of Rain
Humidity: 64%
Cloud cover: 98%

More about Johnston

About Johnston

The city of Johnston, IA in Polk County has an approximate population of 17,278. ^[6]

Johnston, IA Solar Energy

To learn more about solar energy and solar power Johnston, IA, or for more solar-related resources for Johnston, visit the U.S. Energy Information Administration.