Water Temperature of the Potomac River in Point of Rocks, MD
Current Water Temperature
Measurement Time: Wednesday, May 21, 2025, 4:45 AM EDT
Temperature Locations
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Local Points of Interest
Paton Island; Heaters island; Chesapeake and Ohio Canal National Historic ParkSponsored Content
Station Name: POTOMAC RIVER AT POINT OF ROCKS, MD
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 217 feet / 66 meters
Nearest Address:
3707 Canal Rd
Point of Rocks, MD 21777
Frederick County
GPS Coordinates: 39.2735833, -77.5431111
Nearby Water Temperatures
Carroll Creek, Frederick, MD (12.1 mi)Carroll Creek, Frederick, MD (12.5 mi)
Big Hunting Creek, Thurmont, MD (25.1 mi)
Difficult Run, McLean, VA (26.0 mi)
Spout Run, Boyce, VA (28.5 mi)
Difficult Run, Oakton, VA (29.1 mi)
Dead Run, McLean, VA (29.3 mi)
Patuxent River, Brighton, MD (29.4 mi)
Sligo Creek, Takoma Park, MD (35.0 mi)
Paint Branch, Calverton, MD (35.2 mi)
Washington Channel, Washington, DC (39.3 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (39.5 mi)
Scotts Level Branch, Milford Mill, MD (42.2 mi)
Cacapon River , Great Cacapon, WV (46.1 mi)
Gunpowder Falls, Parkton, MD (51.4 mi)
Weather for Point of Rocks, Maryland
Current Weather

Humidity: 100%
Feels Like: 52.8°F
Wind: ESE 9.8 mph
Wind Gusts: 14.7 mph
Precipitation: 0.03 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.1
Five Day Weather Forecast

Wed
H: 54°F
L: 51°F

Thu
H: 49°F
L: 48°F

Fri
H: 63°F
L: 47°F

Sat
H: 65°F
L: 42°F

Sun
H: 68°F
L: 55°F
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 31 mins
Moon Transit: 8:13 AM
Moonset: 2:04 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
7:43 AM - 10:13 AM12:00 AM - 12:00 AM
Minor Periods
1:34 PM - 3:04 PM2:03 AM - 3:33 AM
Action Rating: 2 out of 5
This is only a test for monitoring of vital dissemination systems.
Effective: Wed May 21, 2025, 8:25 AM
Expires: Wed May 21, 2025, 8:35 AM
Monitoring message only. Please disregard.
Monitoring message only. Please disregard.
Flood Watch issued May 20 at 10:48PM EDT until May 21 at 11:00PM EDT by NWS Baltimore MD/Washington DC
Effective: Tue May 20, 2025, 10:48 PM
Expires: Wed May 21, 2025, 7:00 AM
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and northwest Virginia, including the following areas, in central Virginia, Greene. In northwest Virginia, Madison, Northern Virginia Blue Ridge and Rappahannock. * WHEN...From 5 AM EDT Wednesday through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - There is an increased potential for flooding given saturated soils from last week's major flooding event. The heaviest rains will likely fall during Wednesday afternoon to early evening. Total amounts of 1 to 2 inches are possible, with locally up to 3 inches if the worst case scenario unfolds. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Flood Watch issued May 21 at 8:28AM EDT until May 22 at 6:00AM EDT by NWS Baltimore MD/Washington DC
Effective: Wed May 21, 2025, 8:28 AM
Expires: Wed May 21, 2025, 4:30 PM
The Flood Watch is now in effect for tonight. Please see the new Flood Watch for further information.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Flood Watch issued May 20 at 10:48PM EDT until May 21 at 11:00PM EDT by NWS Baltimore MD/Washington DC
Effective: Tue May 20, 2025, 10:48 PM
Expires: Wed May 21, 2025, 7:00 AM
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and northwest Virginia, including the following areas, in central Virginia, Greene. In northwest Virginia, Madison, Northern Virginia Blue Ridge and Rappahannock. * WHEN...From 5 AM EDT Wednesday through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - There is an increased potential for flooding given saturated soils from last week's major flooding event. The heaviest rains will likely fall during Wednesday afternoon to early evening. Total amounts of 1 to 2 inches are possible, with locally up to 3 inches if the worst case scenario unfolds. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Flood Watch issued May 21 at 8:28AM EDT until May 22 at 6:00AM EDT by NWS Baltimore MD/Washington DC
Effective: Wed May 21, 2025, 8:28 AM
Expires: Wed May 21, 2025, 4:30 PM
The Flood Watch is now in effect for tonight. Please see the new Flood Watch for further information.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Weather Forecast
Average Temperature: 52.5°F
Average Humidity: 94%
Wind: 13.4 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 18.56 μg/m3
Sulphur Dioxide: 8.78 μg/m3
Ozone: 77.46 μg/m3
Astronomical
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 31 mins
Moon Transit: 8:13 AM
Moonset: 2:04 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
7:43 AM - 10:13 AM12:00 AM - 12:00 AM
Minor Periods
1:34 PM - 3:04 PM2:03 AM - 3:33 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 49.5°F
Average Humidity: 98%
Wind: 8.7 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:06 PM
Sunset: 8:24 PM
Daylight: 14 hrs 33 mins
Moon Transit: 12:46 AM
Moonset: 3:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
12:16 AM - 2:46 PM12:16 AM - 2:46 PM
Minor Periods
2:46 PM - 4:16 PM2:27 AM - 3:57 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 54.2°F
Average Humidity: 76%
Wind: 12.8 mph
UV Index: 3
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:07 PM
Sunset: 8:24 PM
Daylight: 14 hrs 34 mins
Moon Transit: 12:00 AM
Moonset: 4:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:00 AM - 12:00 AM
Minor Periods
4:00 PM - 5:30 PM2:52 AM - 4:22 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 55.5°F
Average Humidity: 69%
Wind: 5.6 mph
UV Index: 4
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:07 PM
Sunset: 8:25 PM
Daylight: 14 hrs 36 mins
Moon Transit: 10:41 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:11 AM - 12:41 AM
Minor Periods
5:17 PM - 6:47 PM3:18 AM - 4:48 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 59.5°F
Average Humidity: 81%
Wind: 5.4 mph
UV Index: 4
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:07 PM
Sunset: 8:26 PM
Daylight: 14 hrs 37 mins
Moon Transit: 11:36 AM
Moonset: 7:08 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:21 AM - 2:51 AM11:06 AM - 1:36 PM
Minor Periods
6:38 PM - 8:08 PM3:50 AM - 5:20 AM
Action Rating: 4 out of 5