Geek Weather

Interactive weather forecasts, historical data graphs, and multi-city comparisons. Zoom from yearly overview to hourly detail.

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Browse all locations — view weather forecasts and historical data for cities worldwide.

About Potomac, MD

Potomac is a city of approximately 45,000 people in Maryland, United States. Located in the Eastern Time Zone at 39°N latitude.

View historical weather for Potomac · More cities in Maryland