Water Temperature of the Potomac River in Point of Rocks, MD

Current Water Temperature

63.3°F

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 Park

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Potomac River

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

55.4°F
Light rain
Conditions: Light rain
Humidity: 100%
Feels Like: 52.8°F
Wind: ESE 9.8 mph
Wind Gusts: 14.7 mph
Pressure: 29.88 in
Precipitation: 0.03 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0.1

Five Day Weather Forecast

Heavy rain
Wed
H: 54°F
L: 51°F
Moderate rain
Thu
H: 49°F
L: 48°F
Patchy rain nearby
Fri
H: 63°F
L: 47°F
Partly Cloudy
Sat
H: 65°F
L: 42°F
Patchy rain nearby
Sun
H: 68°F
L: 55°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 31 mins
Moonrise: 2:33 AM
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 AM
12:00 AM - 12:00 AM

Minor Periods

1:34 PM - 3:04 PM
2:03 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.


Wednesday, May 21, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 52.5°F
Average Humidity: 94%
Chance of Rain: 79%
Wind: 13.4 mph
UV Index: 0.1

Air Quality

AQI: 2 - Moderate
PM2.5: 16.47 μg/m3
PM10: 17.22 μg/m3
Carbon Monoxide: 341.4 μg/m3
Nitrogen Dioxide: 18.56 μg/m3
Sulphur Dioxide: 8.78 μg/m3
Ozone: 77.46 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 31 mins
Moonrise: 2:33 AM
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 AM
12:00 AM - 12:00 AM

Minor Periods

1:34 PM - 3:04 PM
2:03 AM - 3:33 AM

Action Rating: 2 out of 5

Thursday, May 22, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 49.5°F
Average Humidity: 98%
Chance of Rain: 61%
Wind: 8.7 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:24 PM
Daylight: 14 hrs 33 mins
Moonrise: 2:57 AM
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 PM
12:16 AM - 2:46 PM

Minor Periods

2:46 PM - 4:16 PM
2:27 AM - 3:57 AM

Action Rating: 2 out of 5

Friday, May 23, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 54.2°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 3

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:07 PM
Sunset: 8:24 PM
Daylight: 14 hrs 34 mins
Moonrise: 3:22 AM
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 AM
12:00 AM - 12:00 AM

Minor Periods

4:00 PM - 5:30 PM
2:52 AM - 4:22 AM

Action Rating: 2 out of 5

Saturday, May 24, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 55.5°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 5.6 mph
UV Index: 4

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:07 PM
Sunset: 8:25 PM
Daylight: 14 hrs 36 mins
Moonrise: 3:48 AM
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 AM
10:11 AM - 12:41 AM

Minor Periods

5:17 PM - 6:47 PM
3:18 AM - 4:48 AM

Action Rating: 2 out of 5

Sunday, May 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 59.5°F
Average Humidity: 81%
Chance of Rain: 85%
Wind: 5.4 mph
UV Index: 4

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:07 PM
Sunset: 8:26 PM
Daylight: 14 hrs 37 mins
Moonrise: 4:20 AM
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 AM
11:06 AM - 1:36 PM

Minor Periods

6:38 PM - 8:08 PM
3:50 AM - 5:20 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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