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

Current Water Temperature

32.9°F

Measurement Time: Friday, January 2, 2026, 9:45 AM EST

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

37°F
Sunny
Sunny
31.6°F
42.7°F
42%
WNW 6.9 mph
8.7 mph
36.4°F
23.1°F
0 in
25%
9 mi
1008 mbar
0.6

Five Day Weather Forecast

Overcast
Fri
H: 46°F
L: 24°F
Overcast
Sat
H: 36°F
L: 24°F
Partly Cloudy
Sun
H: 43°F
L: 25°F
Light freezing rain
Mon
H: 38°F
L: 24°F
Overcast
Tue
H: 44°F
L: 31°F

Air Quality

AQI: 2 - Moderate
PM2.5: 9.75 μg/m3
PM10: 10.05 μg/m3
Carbon Monoxide: 220.85 μg/m3
Nitrogen Dioxide: 15.75 μg/m3
Sulphur Dioxide: 9.05 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:14 AM
Sunset: 4:59 PM
Daylight: 9 hrs 29 mins
Moonrise: 4:00 PM
Moon Transit: 12:00 AM
Moonset: 7:02 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:44 AM - 3:14 PM

Minor Periods

3:30 PM - 5:00 PM
6:32 AM - 8:02 AM

Action Rating: 4 out of 5

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

Effective: Fri January 2, 2026, 1:26 PM
Expires: Fri January 2, 2026, 1:36 PM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Friday, January 2, 2026

Weather Forecast

Overcast
45.7°F
24.4°F
30.6°F
46%
0 in
0%
0%
8.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 11.34 μg/m3
PM10: 11.84 μg/m3
Carbon Monoxide: 204.09 μg/m3
Nitrogen Dioxide: 12.93 μg/m3
Sulphur Dioxide: 9.4 μg/m3
Ozone: 56.36 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:14 AM
Sunset: 4:59 PM
Daylight: 9 hrs 29 mins
Moonrise: 4:00 PM
Moon Transit: 12:00 AM
Moonset: 7:02 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:44 AM - 3:14 PM

Minor Periods

3:30 PM - 5:00 PM
6:32 AM - 8:02 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Overcast
36°F
24.1°F
29.7°F
63%
0 in
0%
0%
6 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 10.35 μg/m3
PM10: 10.53 μg/m3
Carbon Monoxide: 220.13 μg/m3
Nitrogen Dioxide: 14.54 μg/m3
Sulphur Dioxide: 9.71 μg/m3
Ozone: 54.76 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:14 AM
Sunset: 5:00 PM
Daylight: 9 hrs 30 mins
Moonrise: 5:15 PM
Moon Transit: 12:03 AM
Moonset: 8:01 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:49 PM - 4:19 PM

Minor Periods

4:45 PM - 6:15 PM
7:31 AM - 9:01 AM

Action Rating: 5 out of 5

Sunday, January 4, 2026

Weather Forecast

Partly Cloudy
43.3°F
25.1°F
33.1°F
70%
0 in
0%
0%
14.3 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 22 μg/m3
PM10: 22.67 μg/m3
Carbon Monoxide: 368.73 μg/m3
Nitrogen Dioxide: 34.77 μg/m3
Sulphur Dioxide: 12.48 μg/m3
Ozone: 30.72 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:15 AM
Sunset: 5:01 PM
Daylight: 9 hrs 31 mins
Moonrise: 6:33 PM
Moon Transit: 1:06 AM
Moonset: 8:47 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
2:50 PM - 5:20 PM

Minor Periods

6:03 PM - 7:33 PM
8:17 AM - 9:47 AM

Action Rating: 4 out of 5

Monday, January 5, 2026

Weather Forecast

Light freezing rain
37.5°F
24.2°F
30.2°F
71%
0.01 in
84%
0%
8.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.34 μg/m3
PM10: 8.39 μg/m3
Carbon Monoxide: 250.72 μg/m3
Nitrogen Dioxide: 15.85 μg/m3
Sulphur Dioxide: 11.73 μg/m3
Ozone: 52.28 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:15 AM
Sunset: 5:01 PM
Daylight: 9 hrs 31 mins
Moonrise: 7:48 PM
Moon Transit: 2:04 AM
Moonset: 9:23 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
3:44 PM - 6:14 PM

Minor Periods

7:18 PM - 8:48 PM
8:53 AM - 10:23 AM

Action Rating: 3 out of 5

Tuesday, January 6, 2026

Weather Forecast

Overcast
44.4°F
30.8°F
36.3°F
87%
0 in
0%
0%
5.8 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 18.81 μg/m3
PM10: 18.91 μg/m3
Carbon Monoxide: 295.63 μg/m3
Nitrogen Dioxide: 23.67 μg/m3
Sulphur Dioxide: 10.27 μg/m3
Ozone: 25.77 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:16 AM
Sunset: 5:02 PM
Daylight: 9 hrs 32 mins
Moonrise: 8:59 PM
Moon Transit: 2:57 AM
Moonset: 9:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:27 AM - 4:57 AM
4:34 PM - 7:04 PM

Minor Periods

8:29 PM - 9:59 PM
9:23 AM - 10:53 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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