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

Current Water Temperature

32.5°F

Measurement Time: Monday, January 19, 2026, 1:45 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

21.7°F
Clear
Clear
15.3°F
19.8°F
86%
SW 4.7 mph
9.9 mph
13.5°F
11.6°F
0 in
0%
9 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 45°F
L: 19°F
Sunny
Tue
H: 29°F
L: 15°F
Partly Cloudy
Wed
H: 36°F
L: 15°F
Patchy moderate snow
Thu
H: 45°F
L: 24°F
Partly Cloudy
Fri
H: 45°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 6.45 μg/m3
PM10: 6.55 μg/m3
Carbon Monoxide: 169.85 μg/m3
Nitrogen Dioxide: 4.15 μg/m3
Sulphur Dioxide: 5.65 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:20 AM
Sunset: 5:16 PM
Daylight: 9 hrs 49 mins
Moonrise: 8:12 AM
Moon Transit: 1:07 PM
Moonset: 6:11 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
12:37 AM - 3:07 PM

Minor Periods

5:41 PM - 7:11 PM
7:42 AM - 9:12 AM

Action Rating: 5 out of 5

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

Effective: Mon January 19, 2026, 7:21 AM
Expires: Mon January 19, 2026, 7:31 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.


Cold Weather Advisory issued January 19 at 2:00AM EST until January 20 at 1:00PM EST by NWS Baltimore MD/Washington DC

Effective: Mon January 19, 2026, 2:00 AM
Expires: Mon January 19, 2026, 10:00 AM

* WHAT...Very cold wind chills around 10 below zero expected. * WHERE...Central Virginia Blue Ridge and Northern Virginia Blue Ridge. * WHEN...From 8 PM this evening to 1 PM EST Tuesday. * IMPACTS...The cold wind chills could result in hypothermia if precautions are not taken. Wind chill values can lead to hypothermia with prolonged exposure. * ADDITIONAL DETAILS...The coldest wind chills will be at elevations above 2500 feet between midnight tonight and 9 AM Tuesday.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible.
Monday, January 19, 2026

Weather Forecast

Sunny
45.3°F
19.2°F
28.3°F
55%
0 in
0%
0%
19 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.07 μg/m3
PM10: 8.2 μg/m3
Carbon Monoxide: 193.65 μg/m3
Nitrogen Dioxide: 9.26 μg/m3
Sulphur Dioxide: 7.46 μg/m3
Ozone: 53.6 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:20 AM
Sunset: 5:16 PM
Daylight: 9 hrs 49 mins
Moonrise: 8:12 AM
Moon Transit: 1:07 PM
Moonset: 6:11 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
12:37 AM - 3:07 PM

Minor Periods

5:41 PM - 7:11 PM
7:42 AM - 9:12 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
29.1°F
14.9°F
20.6°F
38%
0 in
0%
0%
15 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.78 μg/m3
PM10: 4.97 μg/m3
Carbon Monoxide: 174.65 μg/m3
Nitrogen Dioxide: 5.5 μg/m3
Sulphur Dioxide: 6.44 μg/m3
Ozone: 68.32 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:21 AM
Sunset: 5:17 PM
Daylight: 9 hrs 51 mins
Moonrise: 8:41 AM
Moon Transit: 1:55 PM
Moonset: 7:18 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:44 AM - 5:14 AM
1:25 PM - 3:55 PM

Minor Periods

6:48 PM - 8:18 PM
8:11 AM - 9:41 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Partly Cloudy
36.3°F
15.3°F
25.5°F
32%
0 in
0%
0%
16.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 12.19 μg/m3
PM10: 12.69 μg/m3
Carbon Monoxide: 206.62 μg/m3
Nitrogen Dioxide: 22.57 μg/m3
Sulphur Dioxide: 8.65 μg/m3
Ozone: 44.96 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:21 AM
Sunset: 5:18 PM
Daylight: 9 hrs 53 mins
Moonrise: 9:06 AM
Moon Transit: 2:40 PM
Moonset: 8:25 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
2:10 PM - 4:40 PM

Minor Periods

7:55 PM - 9:25 PM
8:36 AM - 10:06 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Patchy moderate snow
44.5°F
23.6°F
32.8°F
61%
0.02 in
83%
6%
16.3 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.98 μg/m3
PM10: 8.18 μg/m3
Carbon Monoxide: 202.8 μg/m3
Nitrogen Dioxide: 7.72 μg/m3
Sulphur Dioxide: 5.83 μg/m3
Ozone: 62.08 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:21 AM
Sunset: 5:19 PM
Daylight: 9 hrs 55 mins
Moonrise: 9:29 AM
Moon Transit: 3:25 PM
Moonset: 9:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

4:15 AM - 6:45 AM
2:55 PM - 5:25 PM

Minor Periods

9:01 PM - 10:31 PM
8:59 AM - 10:29 AM

Action Rating: 3 out of 5

Friday, January 23, 2026

Weather Forecast

Partly Cloudy
45.4°F
20.8°F
30.2°F
69%
0 in
0%
0%
13 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.21 μg/m3
PM10: 6.38 μg/m3
Carbon Monoxide: 196.39 μg/m3
Nitrogen Dioxide: 8.67 μg/m3
Sulphur Dioxide: 8.2 μg/m3
Ozone: 60.38 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:22 AM
Sunset: 5:20 PM
Daylight: 9 hrs 56 mins
Moonrise: 9:52 AM
Moon Transit: 9:54 AM
Moonset: 10:39 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

9:24 AM - 11:54 AM
9:24 AM - 11:54 AM

Minor Periods

10:09 PM - 11:39 PM
9:22 AM - 10:52 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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