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

Current Water Temperature

77.0°F

Measurement Time: Thursday, September 17, 2026, 5:55 AM EDT

Temperature Locations

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Local Points of Interest

Paton Island; Heaters island; Chesapeake and Ohio Canal National Historic Park

Potomac River

Station Name: POTOMAC RIVER AT POINT OF ROCKS, MD
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 217 feet

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 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 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

76°F
Mostly Sunny
Mostly Sunny
79%
S 3 mph
69°F

Weather Forecast

Scattered Rain Showers then Scattered Showers And Thunderstorms
Today
89°F - Scattered Rain Showers then Scattered Showers And Thunderstorms
Scattered Showers And Thunderstorms then Mostly Cloudy
Tonight
70°F - Scattered Showers And Thunderstorms then Mostly Cloudy
Mostly Sunny
Friday
84°F - Mostly Sunny
Partly Cloudy
Friday Night
60°F - Partly Cloudy
Partly Sunny
Saturday
79°F - Partly Sunny
Mostly Cloudy
Saturday Night
65°F - Mostly Cloudy
Showers And Thunderstorms Likely
Sunday
85°F - Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Sunday Night
63°F - Showers And Thunderstorms Likely
Chance Rain Showers
Monday
74°F - Chance Rain Showers
Chance Rain Showers
Monday Night
60°F - Chance Rain Showers
Chance Rain Showers
Tuesday
70°F - Chance Rain Showers
Chance Showers And Thunderstorms
Tuesday Night
57°F - Chance Showers And Thunderstorms
Chance Rain Showers
Wednesday
70°F - Chance Rain Showers
Chance Rain Showers
Wednesday Night
57°F - Chance Rain Showers

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:04 PM
Sunset: 7:15 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:46 PM
Moon Transit: 6:14 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
5:44 PM - 8:14 PM

Minor Periods

10:11 PM - 11:41 PM
1:16 PM - 2:46 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:53 AM
Sun Transit: 1:04 PM
Sunset: 7:15 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:46 PM
Moon Transit: 6:14 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
5:44 PM - 8:14 PM

Minor Periods

10:11 PM - 11:41 PM
1:16 PM - 2:46 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:53 AM
Sun Transit: 1:04 PM
Sunset: 7:15 PM
Daylight: 12 hrs 22 mins
Moonrise: 1:46 PM
Moon Transit: 6:14 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
5:44 PM - 8:14 PM

Minor Periods

10:11 PM - 11:41 PM
1:16 PM - 2:46 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:54 AM
Sun Transit: 1:04 PM
Sunset: 7:13 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:41 PM
Moon Transit: 7:05 PM
Moonset: 11:31 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
6:35 PM - 9:05 PM

Minor Periods

12:00 AM - 12:00 AM
2:11 PM - 3:41 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:54 AM
Sun Transit: 1:04 PM
Sunset: 7:13 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:41 PM
Moon Transit: 7:05 PM
Moonset: 11:31 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
6:35 PM - 9:05 PM

Minor Periods

12:00 AM - 12:00 AM
2:11 PM - 3:41 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:55 AM
Sun Transit: 1:03 PM
Sunset: 7:12 PM
Daylight: 12 hrs 17 mins
Moonrise: 3:29 PM
Moon Transit: 7:56 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:44 AM - 11:14 AM
7:26 PM - 9:56 PM

Minor Periods

2:59 PM - 4:29 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:55 AM
Sun Transit: 1:03 PM
Sunset: 7:12 PM
Daylight: 12 hrs 17 mins
Moonrise: 3:29 PM
Moon Transit: 7:56 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:44 AM - 11:14 AM
7:26 PM - 9:56 PM

Minor Periods

2:59 PM - 4:29 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:56 AM
Sun Transit: 1:03 PM
Sunset: 7:10 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:10 PM
Moon Transit: 8:46 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:35 AM - 12:05 AM
8:16 PM - 10:46 PM

Minor Periods

3:40 PM - 5:10 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:56 AM
Sun Transit: 1:03 PM
Sunset: 7:10 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:10 PM
Moon Transit: 8:46 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:35 AM - 12:05 AM
8:16 PM - 10:46 PM

Minor Periods

3:40 PM - 5:10 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:57 AM
Sun Transit: 1:03 PM
Sunset: 7:09 PM
Daylight: 12 hrs 12 mins
Moonrise: 4:44 PM
Moon Transit: 9:34 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:24 AM - 12:54 AM
9:04 PM - 11:34 PM

Minor Periods

4:14 PM - 5:44 PM
12:58 AM - 2:28 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:57 AM
Sun Transit: 1:03 PM
Sunset: 7:09 PM
Daylight: 12 hrs 12 mins
Moonrise: 4:44 PM
Moon Transit: 9:34 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:24 AM - 12:54 AM
9:04 PM - 11:34 PM

Minor Periods

4:14 PM - 5:44 PM
12:58 AM - 2:28 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:58 AM
Sun Transit: 1:02 PM
Sunset: 7:07 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:13 PM
Moon Transit: 10:21 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
12:00 AM - 12:00 AM

Minor Periods

4:43 PM - 6:13 PM
2:02 AM - 3:32 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:58 AM
Sun Transit: 1:02 PM
Sunset: 7:07 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:13 PM
Moon Transit: 10:21 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
12:00 AM - 12:00 AM

Minor Periods

4:43 PM - 6:13 PM
2:02 AM - 3:32 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:59 AM
Sun Transit: 1:02 PM
Sunset: 7:05 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:39 PM
Moon Transit: 11:05 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

11:56 AM - 2:26 PM
12:00 AM - 12:00 AM

Minor Periods

5:09 PM - 6:39 PM
3:06 AM - 4:36 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


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: 6:59 AM
Sun Transit: 1:02 PM
Sunset: 7:05 PM
Daylight: 12 hrs 7 mins
Moonrise: 5:39 PM
Moon Transit: 11:05 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

11:56 AM - 2:26 PM
12:00 AM - 12:00 AM

Minor Periods

5:09 PM - 6:39 PM
3:06 AM - 4:36 AM

Action Rating: 3 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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