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

Current Water Temperature

82.6°F

Measurement Time: Monday, June 29, 2026, 8:55 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

68.2°F
Clear
Clear
68.2°F
76.9°F
99%
SSE 3.8 mph
8 mph
73.2°F
63.7°F
0 in
0%
9 mi
1021 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 93°F
L: 69°F
Sunny
Wed
H: 101°F
L: 66°F
Sunny
Thu
H: 101°F
L: 73°F
Sunny
Fri
H: 103°F
L: 68°F
Sunny
Sat
H: 98°F
L: 66°F

Air Quality

AQI: 1 - Good
PM2.5: 8.4 μg/m3
PM10: 8.8 μg/m3
Carbon Monoxide: 206 μg/m3
Nitrogen Dioxide: 11.7 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:13 PM
Sunset: 8:41 PM
Daylight: 14 hrs 54 mins
Moonrise: 9:37 PM
Moon Transit: 1:26 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 AM
3:04 PM - 5:34 PM

Minor Periods

9:07 PM - 10:37 PM
5:28 AM - 6:58 AM

Action Rating: 5 out of 5

Small Craft Advisory issued June 29 at 1:57PM EDT until July 1 at 1:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Mon June 29, 2026, 1:57 PM
Expires: Mon June 29, 2026, 10:00 PM

* WHAT...South winds around 10 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac from Key Bridge to Indian Head MD, and Patapsco River including Baltimore Harbor. * WHEN...From 5 PM Tuesday to 1 AM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, June 30, 2026

Weather Forecast

Sunny
92.6°F
69.1°F
80.1°F
64%
0.02 in
36%
0%
11.4 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 7.42 μg/m3
PM10: 8.04 μg/m3
Carbon Monoxide: 144.5 μg/m3
Nitrogen Dioxide: 4.68 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 85.54 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:13 PM
Sunset: 8:41 PM
Daylight: 14 hrs 54 mins
Moonrise: 9:37 PM
Moon Transit: 1:26 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 98.6%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 AM
3:04 PM - 5:34 PM

Minor Periods

9:07 PM - 10:37 PM
5:28 AM - 6:58 AM

Action Rating: 5 out of 5

Wednesday, July 1, 2026

Weather Forecast

Sunny
100.5°F
66.4°F
83.1°F
58%
0 in
3%
0%
9.8 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 11.52 μg/m3
PM10: 14.95 μg/m3
Carbon Monoxide: 140.88 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 88.17 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:14 PM
Sunset: 8:41 PM
Daylight: 14 hrs 54 mins
Moonrise: 10:11 PM
Moon Transit: 2:15 AM
Moonset: 6:59 AM
Moon Phase: Full
Moon Illumination: 94.7%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
3:53 PM - 6:23 PM

Minor Periods

9:41 PM - 11:11 PM
6:29 AM - 7:59 AM

Action Rating: 3 out of 5

Thursday, July 2, 2026

Weather Forecast

Sunny
101.4°F
72.5°F
86.8°F
56%
0 in
3%
0%
6.9 mph
10


Air Quality

AQI: 2 - Moderate
PM2.5: 18.55 μg/m3
PM10: 25.53 μg/m3
Carbon Monoxide: 138.75 μg/m3
Nitrogen Dioxide: 4.73 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 85.75 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:14 PM
Sunset: 8:41 PM
Daylight: 14 hrs 53 mins
Moonrise: 10:40 PM
Moon Transit: 3:03 AM
Moonset: 8:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%

Best Times for Fishing or Hunting

Major Periods

2:33 AM - 5:03 AM
4:39 PM - 7:09 PM

Minor Periods

10:10 PM - 11:40 PM
7:33 AM - 9:03 AM

Action Rating: 2 out of 5

Friday, July 3, 2026

Weather Forecast

Sunny
102.8°F
67.9°F
82.5°F
64%
0.7 in
64%
0%
6.9 mph
10


Air Quality

AQI: 2 - Moderate
PM2.5: 17.37 μg/m3
PM10: 22.77 μg/m3
Carbon Monoxide: 140.94 μg/m3
Nitrogen Dioxide: 5.46 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:14 PM
Sunset: 8:41 PM
Daylight: 14 hrs 52 mins
Moonrise: 11:05 PM
Moon Transit: 3:49 AM
Moonset: 9:06 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
5:23 PM - 7:53 PM

Minor Periods

12:00 AM - 12:00 AM
8:36 AM - 10:06 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
97.6°F
66.2°F
77°F
75%
0.37 in
73%
0%
11.2 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 15 μg/m3
PM10: 17.87 μg/m3
Carbon Monoxide: 235.67 μg/m3
Nitrogen Dioxide: 6.56 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 63.44 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:14 PM
Sunset: 8:40 PM
Daylight: 14 hrs 52 mins
Moonrise: 12:05 AM
Moon Transit: 4:32 AM
Moonset: 10:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

4:02 AM - 6:32 AM
6:06 PM - 8:36 PM

Minor Periods

9:40 AM - 11:10 AM
12:00 AM - 12:00 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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