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

Current Water Temperature

65.1°F

Measurement Time: Friday, May 22, 2026, 4:55 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

56.1°F
Light rain
Light rain
53.3°F
53.6°F
100%
E 11.2 mph
15.6 mph
51.5°F
47.7°F
0.03 in
100%
4 mi
1028 mbar
0

Five Day Weather Forecast

Moderate rain
Fri
H: 59°F
L: 52°F
Heavy rain
Sat
H: 52°F
L: 50°F
Patchy rain nearby
Sun
H: 68°F
L: 51°F
Moderate rain
Mon
H: 71°F
L: 58°F
Moderate rain
Tue
H: 74°F
L: 60°F

Air Quality

AQI: 2 - Moderate
PM2.5: 7.95 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 136.85 μg/m3
Nitrogen Dioxide: 6.05 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 32 mins
Moonrise: 11:55 AM
Moon Transit: 7:00 PM
Moonset: 1:25 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
6:30 PM - 9:00 PM

Minor Periods

11:25 AM - 12:55 AM
12:55 AM - 2:25 AM

Action Rating: 2 out of 5

This is only a test for monitoring of vital dissemination systems.

Effective: Fri May 22, 2026, 8:20 PM
Expires: Fri May 22, 2026, 8:30 PM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Friday, May 22, 2026

Weather Forecast

Moderate rain
59.2°F
52°F
56°F
85%
0.24 in
89%
0%
11.2 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 10.13 μg/m3
PM10: 10.55 μg/m3
Carbon Monoxide: 165.05 μg/m3
Nitrogen Dioxide: 9.97 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 45.52 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 32 mins
Moonrise: 11:55 AM
Moon Transit: 7:00 PM
Moonset: 1:25 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
6:30 PM - 9:00 PM

Minor Periods

11:25 AM - 12:55 AM
12:55 AM - 2:25 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Heavy rain
52.2°F
50.2°F
51.1°F
94%
0.81 in
92%
0%
12.1 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 6.26 μg/m3
PM10: 7.14 μg/m3
Carbon Monoxide: 138.21 μg/m3
Nitrogen Dioxide: 6.23 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:06 PM
Sunset: 8:24 PM
Daylight: 14 hrs 34 mins
Moonrise: 1:04 PM
Moon Transit: 7:46 PM
Moonset: 1:53 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
7:16 PM - 9:46 PM

Minor Periods

12:34 AM - 2:04 PM
1:23 AM - 2:53 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
67.7°F
50.9°F
58.1°F
93%
0.02 in
87%
0%
5.1 mph
5.1


Air Quality

AQI: 1 - Good
PM2.5: 2.99 μg/m3
PM10: 3.02 μg/m3
Carbon Monoxide: 134.81 μg/m3
Nitrogen Dioxide: 5.91 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 48.84 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:07 PM
Sunset: 8:25 PM
Daylight: 14 hrs 35 mins
Moonrise: 2:10 PM
Moon Transit: 8:29 PM
Moonset: 2:18 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

9:21 AM - 11:51 AM
7:59 PM - 10:29 PM

Minor Periods

1:40 PM - 3:10 PM
1:48 AM - 3:18 AM

Action Rating: 3 out of 5

Monday, May 25, 2026

Weather Forecast

Moderate rain
71°F
57.9°F
63.1°F
94%
0.44 in
85%
0%
4.9 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 11.41 μg/m3
PM10: 11.43 μg/m3
Carbon Monoxide: 208.67 μg/m3
Nitrogen Dioxide: 13.49 μg/m3
Sulphur Dioxide: 2.89 μg/m3
Ozone: 35.48 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:07 PM
Sunset: 8:26 PM
Daylight: 14 hrs 37 mins
Moonrise: 3:13 PM
Moon Transit: 9:11 PM
Moonset: 2:40 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
8:41 PM - 11:11 PM

Minor Periods

2:43 PM - 4:13 PM
2:10 AM - 3:40 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Moderate rain
73.5°F
60.1°F
65.5°F
94%
0.29 in
87%
0%
5.8 mph
4.8


Air Quality

AQI: 2 - Moderate
PM2.5: 17.17 μg/m3
PM10: 17.17 μg/m3
Carbon Monoxide: 286.67 μg/m3
Nitrogen Dioxide: 23.03 μg/m3
Sulphur Dioxide: 3.69 μg/m3
Ozone: 22.62 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:07 PM
Sunset: 8:27 PM
Daylight: 14 hrs 38 mins
Moonrise: 4:15 PM
Moon Transit: 9:53 PM
Moonset: 3:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

10:45 AM - 1:15 PM
9:23 PM - 11:53 PM

Minor Periods

3:45 PM - 5:15 PM
2:31 AM - 4:01 AM

Action Rating: 2 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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