Water Temperature of the Patuxent River in Brighton, MD

Current Water Temperature

70.3°F

Measurement Time: Tuesday, October 10, 2017, 4:45 AM EDT

Temperature Locations

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Local Points of Interest

Triadelphia Reservoir; Brighton Dam; Brighton Dam Recreation Park; Clarksville, MD

Patuxent River

Station Name: PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON,MD
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 358 feet

Nearest Address:
14199 Brighton Dam Rd
Brighton, MD 21029
Montgomery County

GPS Coordinates: 39.19219444, -77.00438889

Nearby Water Temperatures

Paint Branch, Calverton, MD (11.2 mi)
Sligo Creek, Takoma Park, MD (14.2 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (16.6 mi)
Scotts Level Branch, Milford Mill, MD (17.5 mi)
Dead Run, McLean, VA (18.5 mi)
Difficult Run, McLean, VA (19.8 mi)
Washington Channel, Washington, DC (22.1 mi)
Northwest Harbor, Baltimore, MD (23.3 mi)
Herring Run, Baltimore, MD (25.6 mi)
Difficult Run, Oakton, VA (27.6 mi)
Carroll Creek, Frederick, MD (27.8 mi)
Carroll Creek, Frederick, MD (28.8 mi)
Potomac River, Point of Rocks, MD (29.4 mi)
Severn River, Annapolis, MD (31.7 mi)
Chesapeake Bay, Annapolis, MD (33.8 mi)

Weather for Brighton, Maryland

Current Weather

88°F
Sunny
Sunny
94.1°F
100.3°F
61%
W 11.2 mph
12.9 mph
90.7°F
74.6°F
0 in
0%
9 mi
1010 mbar
7.3

Five Day Weather Forecast

Sunny
Fri
H: 100°F
L: 71°F
Sunny
Sat
H: 84°F
L: 64°F
Moderate rain
Sun
H: 86°F
L: 68°F
Sunny
Mon
H: 77°F
L: 58°F
Moderate rain
Tue
H: 69°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 10.7 μg/m3
PM10: 12.4 μg/m3
Carbon Monoxide: 136 μg/m3
Nitrogen Dioxide: 2.8 μg/m3
Sulphur Dioxide: 2.3 μg/m3
Ozone: 115 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:07 PM
Sunset: 8:35 PM
Daylight: 14 hrs 54 mins
Moonrise: 3:08 AM
Moon Transit: 10:32 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:02 AM - 12:32 AM

Minor Periods

5:39 PM - 7:09 PM
2:38 AM - 4:08 AM

Action Rating: 2 out of 5

Heat Advisory issued June 12 at 12:26AM EDT until June 12 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Fri June 12, 2026, 12:26 AM
Expires: Fri June 12, 2026, 8:30 AM

* WHAT...Heat index values around 105F expected. * WHERE...Portions of central, north central, and northern Maryland and central, northern, and northwest Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Heat Advisory issued June 12 at 8:19AM EDT until June 12 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Fri June 12, 2026, 8:19 AM
Expires: Fri June 12, 2026, 4:30 PM

* WHAT...Heat index values around 105 expected. * WHERE...DC and portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


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

Effective: Fri June 12, 2026, 8:28 AM
Expires: Fri June 12, 2026, 8:38 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.


Heat Advisory issued June 12 at 12:26AM EDT until June 12 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Fri June 12, 2026, 12:26 AM
Expires: Fri June 12, 2026, 8:30 AM

* WHAT...Heat index values around 105F expected. * WHERE...Portions of DC, central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Friday, June 12, 2026

Weather Forecast

Sunny
99.9°F
71.2°F
83.6°F
62%
0 in
4%
0%
11.6 mph
9.6


Air Quality

AQI: 1 - Good
PM2.5: 8.72 μg/m3
PM10: 9.39 μg/m3
Carbon Monoxide: 157.54 μg/m3
Nitrogen Dioxide: 11.68 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 69.58 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:07 PM
Sunset: 8:35 PM
Daylight: 14 hrs 54 mins
Moonrise: 3:08 AM
Moon Transit: 10:32 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:02 AM - 12:32 AM

Minor Periods

5:39 PM - 7:09 PM
2:38 AM - 4:08 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
84.3°F
63.6°F
75.2°F
55%
0 in
2%
0%
8.5 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 6.54 μg/m3
PM10: 6.96 μg/m3
Carbon Monoxide: 159.13 μg/m3
Nitrogen Dioxide: 8.81 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 88.33 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:08 PM
Sunset: 8:36 PM
Daylight: 14 hrs 55 mins
Moonrise: 3:48 AM
Moon Transit: 11:33 AM
Moonset: 7:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:20 AM - 2:50 AM
11:03 AM - 1:33 PM

Minor Periods

6:58 PM - 8:28 PM
3:18 AM - 4:48 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Moderate rain
86°F
68.2°F
72.9°F
77%
0.43 in
79%
0%
11.4 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 8.99 μg/m3
PM10: 9.46 μg/m3
Carbon Monoxide: 170.46 μg/m3
Nitrogen Dioxide: 9.77 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 97.08 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:08 PM
Sunset: 8:36 PM
Daylight: 14 hrs 55 mins
Moonrise: 4:40 AM
Moon Transit: 12:39 AM
Moonset: 8:43 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
12:09 AM - 2:39 PM

Minor Periods

8:13 PM - 9:43 PM
4:10 AM - 5:40 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Sunny
76.8°F
57.6°F
68.3°F
62%
0 in
17%
0%
10.3 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.55 μg/m3
PM10: 2.64 μg/m3
Carbon Monoxide: 128.73 μg/m3
Nitrogen Dioxide: 4.88 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 69.42 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:08 PM
Sunset: 8:36 PM
Daylight: 14 hrs 55 mins
Moonrise: 5:44 AM
Moon Transit: 1:47 PM
Moonset: 9:47 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:32 AM - 5:02 AM
1:17 PM - 3:47 PM

Minor Periods

9:17 PM - 10:47 PM
5:14 AM - 6:44 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Moderate rain
69.3°F
58.1°F
63.5°F
78%
0.29 in
75%
0%
7.2 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 5.91 μg/m3
Carbon Monoxide: 179 μg/m3
Nitrogen Dioxide: 20.07 μg/m3
Sulphur Dioxide: 0.97 μg/m3
Ozone: 29.78 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:08 PM
Sunset: 8:37 PM
Daylight: 14 hrs 56 mins
Moonrise: 6:58 AM
Moon Transit: 2:53 PM
Moonset: 10:39 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
2:23 PM - 4:53 PM

Minor Periods

10:09 PM - 11:39 PM
6:28 AM - 7:58 AM

Action Rating: 4 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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