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Potomac River
Potomac River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Potomac River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Potomac River
56°F
TODAY
58°F
YESTERDAY
52°F
A WEEK AGO
As of today, the minimum water temperature in the Potomac River ranges from 41°F (5°C) to 47°F (8°C). This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Potomac River Over the Last 30 Days
Today the water temperature in Potomac River is higher than the same day in previous years. The water temperature range here in March is from 37°F to 59°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.
The forecasted water temperature values for Potomac River are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Mar 20 | 52°F | 48°F | |
| Mar 21 | 53°F | 48°F | |
| Mar 22 | 51°F | 48°F | |
| Mar 23 | 51°F | 48°F | |
| Mar 24 | 51°F | 48°F | |
| Mar 25 | 51°F | 48°F | |
| Mar 26 | 58°F | 48°F | |
| Mar 27 | 56°F | 48°F | |
| Mar 28 | 48°F | 56°F | |
| Mar 29 | 48°F | 55°F | |
| Mar 30 | 48°F | 55°F | |
| Mar 31 | 48°F | 54°F | |
| Apr 1 | 50°F | 54°F | |
| Apr 2 | 50°F | 54°F | |
| Apr 3 | 50°F | 54°F | |
| Apr 4 | 50°F | 53°F |
Water Temperature Ranges in Potomac River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 41°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 41°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 48°F | 59°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Potomac River
Water Temperature in Cities and Towns on Potomac River
Known Beaches in the Area of Potomac River?
Leesylvania State Park
Leesylvania State Park is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Potomac River. There are lifeguards on the beach. There is parking. There are restrooms. Leesylvania State Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.
Mason Neck State Park
Mason Neck State Park is a 2-stars sandy beach, located in a 6 km (4 miles) radius of Potomac River. There is parking. There are restrooms.
Grays Beach Private
Grays Beach Private is a 1-stars sandy beach, located in a 7 km (4 miles) radius of Potomac River.
Potomac River Weather
MARCH 28
43°F / 64°F
moderate drizzlerain: 11% | wind: 12 mph
MARCH 29
55°F / 63°F
light drizzlerain: 14% | wind: 10 mph
MARCH 30
48°F / 68°F
light drizzlerain: 21% | wind: 12 mph
MARCH 31
61°F / 72°F
light drizzlerain: 39% | wind: 16 mph
Water Temperature in Potomac River: General Trends and Swimming Opportunities
Source North Branch
• location Fairfax Stone, Preston County, West Virginia
Mouth Chesapeake Bay
• location St. Mary\'s County, Maryland/Northumberland County, Virginia, United States
Length 405 mi (652 km)
The Potomac River, flowing through the U.S. states of Maryland, Virginia, and Washington, D.C., offers a variety of recreational activities, including swimming. Water temperatures in the river can fluctuate depending on the season, typically ranging from about 40°F (4°C) during the winter months to 70-80°F (21-27°C) in the summer, making it more comfortable for swimming as the weather warms up. While the Potomac is not as warm as some southern rivers, it still provides a refreshing dip for those who enjoy outdoor activities along the riverbanks.
Swimming in the Potomac River is popular in certain areas, particularly in recreational zones such as Theodore Roosevelt Island and near the Great Falls Park. These areas offer calmer stretches of the river where swimmers can safely enjoy the water. However, in other parts of the river, currents can be strong and the water may be murky, which can pose safety risks. Many people prefer to swim in designated areas or participate in water sports like kayaking and canoeing, where they can maintain better control of their experience. Despite these factors, the Potomac remains a beloved destination for water activities and provides a scenic backdrop for those looking to enjoy the outdoors.
Geographical Location of Potomac River
Nearby Rivers
Frequently Asked Questions About Potomac River and its Water Temperatures
What is the current water temperature in Potomac River?
The water temperature today in Potomac River ranges from 46°F (7.6°C) to 55°F (12.7°C).
What is the water temperature in Potomac River during the summer months?
The average water temperature in Potomac River during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Potomac River in May?
The average water temperature in Potomac River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Potomac River in September?
The average water temperature in Potomac River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does Potomac River flow?
Potomac River flows through United States (District of Columbia, Virginia, West Virginia, Maryland).
Is it possible to swim in the Potomac River?
Yes, it is physically possible to swim in the Potomac River. However, due to safety concerns and pollution, swimming is generally not recommended and often illegal in certain areas.
What major cities are located on Potomac River?
Cities along the course of Potomac River include Alexandria (Virginia), Arlington (Virginia), Washington (District of Columbia).