Trash Free Park
Great Falls Park is now a trash free park. Trash cans have been removed. Please come prepared to carry your trash out with you. More »
Learn more about how to stay safe around the Potomac. The Potomac has dangerous currents and going into the river is not permitted. Swimming and wading could cost you your life. Stay safe. Stay out of the river. More »
Weather in Great Falls Park is typical for the mid-Atlantic. There are four seasons, with no extremes in temperature. Summers can be hot and humid, so be sure to bring water with you. The average temperature in summer is approximately 75 degrees F. Summer days in the mid-90's with high humidity are not uncommon. Winters can vary in temperature, with the average temperature for Virginia at approximately 36 degrees F. Snow is fairly rare. When it does snow, it tends to melt within a few days.
River temperatures vary throughout the year. Temperatures range from near freezing to over 70 degrees in the summer months. Due to rapids, rocks, and hazardous currents, swimming and wading are prohibited at all times.
Did You Know?
The round holes you see in the rocks along the River Trail were carved by the Potomac. Some of these potholes are large enough to stand in and can take over 500 years to form.