Water Temperature of the Potomac River in Point of Rocks, MD
Current Water Temperature
59.5°F
Measurement Time: Monday, May 25, 2026, 8:55 AM EDT
Temperature Locations
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Local Points of Interest
Paton Island; Heaters island; Chesapeake and Ohio Canal National Historic ParkPotomac 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
70.3°F

Partly cloudy
70.3°F
77.5°F
94%
S 2.2 mph
6.7 mph
74.2°F
67.7°F
0 in
75%
9 mi
1021 mbar
1.3
Five Day Weather Forecast

Mon
H: 76°F
L: 60°F

Tue
H: 70°F
L: 62°F

Wed
H: 77°F
L: 62°F

Thu
H: 77°F
L: 52°F

Fri
H: 75°F
L: 43°F
Air Quality
AQI:
1 - Good
PM2.5:
3.95 μg/m3
PM10:
4.05 μg/m3
Carbon Monoxide: 140.85 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 84 μg/m3
Nitrogen Dioxide: 1.95 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 84 μg/m3
Astronomical
Sunrise: 5:49 AM
Sun Transit: 1:07 PM
Sunset: 8:26 PM
Daylight: 14 hrs 37 mins
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%
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 AM8:41 PM - 11:11 PM
Minor Periods
2:43 PM - 4:13 PM2:10 AM - 3:40 AM
Action Rating: 3 out of 5
Monday, May 25, 2026
Weather Forecast
Patchy rain nearby
76.1°F
60.3°F
67.9°F
90%
0.11 in
87%
0%
2.7 mph
1.7
Air Quality
AQI:
1 - Good
PM2.5:
6.37 μg/m3
PM10:
6.7 μg/m3
Carbon Monoxide: 160.21 μg/m3
Nitrogen Dioxide: 8.51 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 44.96 μg/m3
Nitrogen Dioxide: 8.51 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 44.96 μg/m3
Astronomical
Sunrise: 5:49 AM
Sun Transit: 1:07 PM
Sunset: 8:26 PM
Daylight: 14 hrs 37 mins
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%
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 AM8:41 PM - 11:11 PM
Minor Periods
2:43 PM - 4:13 PM2:10 AM - 3:40 AM
Action Rating: 3 out of 5
Tuesday, May 26, 2026
Weather Forecast
Patchy rain nearby
69.5°F
62.1°F
66.2°F
97%
0.16 in
88%
0%
4.3 mph
6.8
Air Quality
AQI:
1 - Good
PM2.5:
10.39 μg/m3
PM10:
10.67 μg/m3
Carbon Monoxide: 208.53 μg/m3
Nitrogen Dioxide: 13.63 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 57.28 μg/m3
Nitrogen Dioxide: 13.63 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 57.28 μg/m3
Astronomical
Sunrise: 5:48 AM
Sun Transit: 1:07 PM
Sunset: 8:27 PM
Daylight: 14 hrs 38 mins
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%
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 PM9:23 PM - 11:53 PM
Minor Periods
3:45 PM - 5:15 PM2:31 AM - 4:01 AM
Action Rating: 2 out of 5
Wednesday, May 27, 2026
Weather Forecast
Patchy rain nearby
77°F
61.8°F
67.6°F
92%
0.19 in
80%
0%
7.8 mph
8.5
Air Quality
AQI:
1 - Good
PM2.5:
8.84 μg/m3
PM10:
9 μg/m3
Carbon Monoxide: 203.45 μg/m3
Nitrogen Dioxide: 8.73 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 52.52 μg/m3
Nitrogen Dioxide: 8.73 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 52.52 μg/m3
Astronomical
Sunrise: 5:48 AM
Sun Transit: 1:07 PM
Sunset: 8:28 PM
Daylight: 14 hrs 40 mins
Sun Transit: 1:07 PM
Sunset: 8:28 PM
Daylight: 14 hrs 40 mins
Moonrise: 5:17 PM
Moon Transit: 10:36 PM
Moonset: 3:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%
Moon Transit: 10:36 PM
Moonset: 3:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
11:27 AM - 1:57 PM12:00 AM - 12:00 AM
Minor Periods
4:47 PM - 6:17 PM2:53 AM - 4:23 AM
Action Rating: 2 out of 5
Thursday, May 28, 2026
Weather Forecast
Sunny
76.6°F
51.8°F
66.2°F
75%
0 in
0%
0%
15.2 mph
7.8
Air Quality
AQI:
1 - Good
PM2.5:
6.97 μg/m3
PM10:
7.51 μg/m3
Carbon Monoxide: 174.35 μg/m3
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 68.24 μg/m3
Nitrogen Dioxide: 5.2 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 68.24 μg/m3
Astronomical
Sunrise: 5:47 AM
Sun Transit: 1:07 PM
Sunset: 8:28 PM
Daylight: 14 hrs 41 mins
Sun Transit: 1:07 PM
Sunset: 8:28 PM
Daylight: 14 hrs 41 mins
Moonrise: 6:20 PM
Moon Transit: 11:20 PM
Moonset: 3:48 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%
Moon Transit: 11:20 PM
Moonset: 3:48 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
12:11 AM - 2:41 PM12:00 AM - 12:00 AM
Minor Periods
5:50 PM - 7:20 PM3:18 AM - 4:48 AM
Action Rating: 2 out of 5
Friday, May 29, 2026
Weather Forecast
Sunny
74.8°F
43.3°F
59.2°F
70%
0 in
0%
0%
5.6 mph
1
Air Quality
AQI:
1 - Good
PM2.5:
3.53 μg/m3
PM10:
3.63 μg/m3
Carbon Monoxide: 156.4 μg/m3
Nitrogen Dioxide: 5.97 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 48.08 μg/m3
Nitrogen Dioxide: 5.97 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 48.08 μg/m3
Astronomical
Sunrise: 5:47 AM
Sun Transit: 1:07 PM
Sunset: 8:29 PM
Daylight: 14 hrs 42 mins
Sun Transit: 1:07 PM
Sunset: 8:29 PM
Daylight: 14 hrs 42 mins
Moonrise: 7:22 PM
Moon Transit: 12:00 AM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%
Moon Transit: 12:00 AM
Moonset: 4:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:56 AM - 3:26 PM
Minor Periods
6:52 PM - 8:22 PM3:46 AM - 5:16 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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