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

Current Water Temperature

81.0°F

Measurement Time: Wednesday, September 2, 2026, 10:10 PM 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

74°F
Isolated Showers And Thunderstorms
Isolated Showers And Thunderstorms
90%
SE 5 mph
71°F

Weather Forecast

Slight Chance Showers And Thunderstorms
Overnight
71°F - Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Thursday
93°F - Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Thursday Night
73°F - Chance Showers And Thunderstorms
Mostly Sunny then Showers And Thunderstorms Likely
Friday
90°F - Mostly Sunny then Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Friday Night
69°F - Showers And Thunderstorms Likely
Mostly Sunny
Saturday
85°F - Mostly Sunny
Partly Cloudy
Saturday Night
61°F - Partly Cloudy
Sunny
Sunday
80°F - Sunny
Mostly Clear
Sunday Night
60°F - Mostly Clear
Mostly Sunny
Labor Day
81°F - Mostly Sunny
Partly Cloudy
Monday Night
63°F - Partly Cloudy
Mostly Sunny
Tuesday
85°F - Mostly Sunny
Partly Cloudy
Tuesday Night
65°F - Partly Cloudy
Mostly Sunny
Wednesday
87°F - Mostly Sunny

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:09 PM
Sunset: 7:37 PM
Daylight: 12 hrs 57 mins
Moonrise: 11:05 PM
Moon Transit: 6:01 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:24 PM - 2:54 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: 6:41 AM
Sun Transit: 1:09 PM
Sunset: 7:37 PM
Daylight: 12 hrs 57 mins
Moonrise: 11:05 PM
Moon Transit: 6:01 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:24 PM - 2:54 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: 6:41 AM
Sun Transit: 1:09 PM
Sunset: 7:37 PM
Daylight: 12 hrs 57 mins
Moonrise: 11:05 PM
Moon Transit: 6:01 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:24 PM - 2:54 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: 6:41 AM
Sun Transit: 1:09 PM
Sunset: 7:37 PM
Daylight: 12 hrs 57 mins
Moonrise: 11:05 PM
Moon Transit: 6:01 AM
Moonset: 1:54 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:24 PM - 2:54 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: 6:42 AM
Sun Transit: 1:09 PM
Sunset: 7:36 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:05 AM
Moon Transit: 7:02 AM
Moonset: 3:04 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
8:47 PM - 11:17 PM

Minor Periods

2:34 PM - 4:04 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: 6:42 AM
Sun Transit: 1:09 PM
Sunset: 7:36 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:05 AM
Moon Transit: 7:02 AM
Moonset: 3:04 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
8:47 PM - 11:17 PM

Minor Periods

2:34 PM - 4:04 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: 6:43 AM
Sun Transit: 1:08 PM
Sunset: 7:34 PM
Daylight: 12 hrs 52 mins
Moonrise: 12:02 AM
Moon Transit: 8:04 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:34 AM - 10:04 AM
12:00 AM - 12:00 AM

Minor Periods

3:37 PM - 5:07 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: 6:43 AM
Sun Transit: 1:08 PM
Sunset: 7:34 PM
Daylight: 12 hrs 52 mins
Moonrise: 12:02 AM
Moon Transit: 8:04 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:34 AM - 10:04 AM
12:00 AM - 12:00 AM

Minor Periods

3:37 PM - 5:07 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: 6:44 AM
Sun Transit: 1:08 PM
Sunset: 7:33 PM
Daylight: 12 hrs 49 mins
Moonrise: 1:09 AM
Moon Transit: 9:07 AM
Moonset: 4:59 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

4:29 PM - 5:59 PM
12:39 AM - 2:09 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: 6:44 AM
Sun Transit: 1:08 PM
Sunset: 7:33 PM
Daylight: 12 hrs 49 mins
Moonrise: 1:09 AM
Moon Transit: 9:07 AM
Moonset: 4:59 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

4:29 PM - 5:59 PM
12:39 AM - 2:09 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: 6:44 AM
Sun Transit: 1:08 PM
Sunset: 7:31 PM
Daylight: 12 hrs 47 mins
Moonrise: 2:23 AM
Moon Transit: 10:07 AM
Moonset: 5:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:37 AM - 12:07 AM

Minor Periods

5:11 PM - 6:41 PM
1:53 AM - 3:23 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: 6:44 AM
Sun Transit: 1:08 PM
Sunset: 7:31 PM
Daylight: 12 hrs 47 mins
Moonrise: 2:23 AM
Moon Transit: 10:07 AM
Moonset: 5:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:37 AM - 12:07 AM

Minor Periods

5:11 PM - 6:41 PM
1:53 AM - 3:23 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: 6:45 AM
Sun Transit: 1:07 PM
Sunset: 7:30 PM
Daylight: 12 hrs 44 mins
Moonrise: 3:39 AM
Moon Transit: 11:03 AM
Moonset: 6:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:33 AM - 1:03 PM

Minor Periods

5:45 PM - 7:15 PM
3:09 AM - 4:39 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: 6:45 AM
Sun Transit: 1:07 PM
Sunset: 7:30 PM
Daylight: 12 hrs 44 mins
Moonrise: 3:39 AM
Moon Transit: 11:03 AM
Moonset: 6:15 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:33 AM - 1:03 PM

Minor Periods

5:45 PM - 7:15 PM
3:09 AM - 4:39 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: 6:46 AM
Sun Transit: 1:07 PM
Sunset: 7:28 PM
Daylight: 12 hrs 42 mins
Moonrise: 4:55 AM
Moon Transit: 11:55 AM
Moonset: 6:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
11:25 AM - 1:55 PM

Minor Periods

6:14 PM - 7:44 PM
4:25 AM - 5:55 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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