2025 Compare Cities Climate:
Herndon, VA vs Potomac, MD

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Highlights
- Potomac has 2.1% less rainy days than Herndon.
- Potomac has 0.0% more Sunny Days than Herndon.
- On the BestPlaces comfort index, Potomac scores 0.0% worse than Herndon
 Herndon, VAPotomac, MDUnited States
 Rainfall  Unlock4238
 Snowfall22  Unlock28
 Precipitation  Unlock114106
 Sunny201  Unlock205
 Avg. July High  Unlock8686
 Avg. Jan. Low24  Unlock22
 Comfort Index (higher=better)  Unlock7.37
 UV Index4  Unlock4.3
 Elevation  Unlock3612443
Reviews for Herndon    12 Reviews

Over 10 years ago

Seasons tend to be relatively mild. The warmer seasons are extended by 3-4 weeks as compared to the New York Metropolitan Area.  More

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Over 16 years ago

Traffic has gotten out of control the last couple of  More

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Over 16 years ago

We actually live south of Herndon in Oak Hill (Zip Code 20171). The Town of Herndon is incorporated, Oak Hill is not. Herndon is a nice enough city with an historic area  More

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Reviews for Potomac    2 Reviews

Over 17 years ago

Spring and Fall can be quite glorious when the leaves turn or the tulips pop out and the humidity is lower. Winter, while it has some splendid "snow days," goes on much  More

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Over 17 years ago

The Potomac area in Montgomery County, Maryland, has the best of everything. High schools rated in the top 5 in the State, easy access to the Nation's Capitol,  More

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