Solar Energy & Solar Power Resources

Solar Energy in Longmont, CO

Solar Energy in Longmont

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

Solar Panels in Longmont

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

Sunrise & Sunset in Longmont

The total length of the day in Longmont, CO today (September 02, 2026) will be 13 hours and 5 minutes. [More]

Solar Power in Longmont, CO

Solar Energy Data in Longmont, CO

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

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

Solar Energy Analysis for Longmont, CO

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

Solar Radiation Data in Longmont, CO

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

Sorry, data is not currently available.

Solar Radiation Analysis for Longmont, CO

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

Historical solar radiation data for Longmont is not currently available.

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

Solar Power Levels in Longmont

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

Solar Power: Longmont vs. the U.S.

Below is a month-by-month comparison of how average Longmont 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 Colorado is not currently available.

Solar Data & Statistics for Longmont

Sunrise / Sunset in Longmont

Sunrise/Sunset for September 02, 2026 ^[2]
- Sunrise: 6:27 am
- Sunset: 7:32 pm
- Length of Day: 13:5

Best Months for Solar in Longmont

Monthly data not currently available.

Solar Panel Installs in Longmont

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

Solar Power Output in Longmont

The Power of Solar in Longmont, CO

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

AC output data is not currently available.

Solar Output Analysis for Longmont, CO

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

Historical solar radiation data for Longmont is not currently available.

Please check back later.

Cost of Utilities in Longmont

Longmont Electricity Costs

Sorry, Longmont residential electricity prices are currently unavailable.

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Solar Power Poll: Longmont

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

Longmont Natural Gas Costs

Sorry, Colorado residential natural gas prices are currently unavailable.

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Weather Forecast for Longmont, CO ^[5]

Wed Sep 2

80°F

Light Rain
Min: 65°F
Max: 82°F

Moderate breeze: 17 mps SE
Precip.: Chance of Rain
Humidity: 17%
Cloud cover: 48%

Thu Sep 3

78°F

Light Rain
Min: 63°F
Max: 92°F

Moderate breeze: 17 mps WNW
Precip.: Chance of Rain
Humidity: 18%
Cloud cover: 0%

Fri Sep 4

89°F

Light Rain
Min: 62°F
Max: 94°F

Gentle Breeze: 12 mps SSE
Precip.: Chance of Rain
Humidity: 18%
Cloud cover: 0%

Sat Sep 5

90°F

Overcast Clouds
Min: 64°F
Max: 90°F

Gentle Breeze: 10 mps E
Precip.: n/a
Humidity: 17%
Cloud cover: 92%

Sun Sep 6

89°F

Overcast Clouds
Min: 65°F
Max: 89°F

Fresh Breeze: 23 mps W
Precip.: n/a
Humidity: 19%
Cloud cover: 99%

Mon Sep 7

86°F

Light Rain
Min: 63°F
Max: 91°F

Gentle Breeze: 10 mps SE
Precip.: Chance of Rain
Humidity: 27%
Cloud cover: 88%

More about Longmont

About Longmont

The city of Longmont, CO in Boulder County has an approximate population of 86,270. ^[6]

Longmont, CO Solar Energy

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