Water Temperature of Upper Machedoc Creek in Dahlgren, VA

Current Water Temperature

84.2°F

Measurement Time: Thursday, July 24, 2025, 8:12 PM EDT

Today's Tides

High: July 24, 3:02 AM, 2.18 ft
 Low: July 24, 9:53 AM, 0.31 ft
High: July 24, 3:26 PM, 1.88 ft
 Low: July 24, 9:46 PM, 0.17 ft

Temperature Locations

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Local Points of Interest

Potomac River; Naval Surface Warfare Center

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Upper Machedoc Creek

Station Name: Dahlgren
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 10 feet / 3 meters

Sensor Depth: 1.9 feet / 0.6 meters

Nearest Address:
6388–6478 Sampson Rd
Dahlgren, VA 22448
King George County

GPS Coordinates: 38.320000, -77.036697

Nearby Water Temperatures

Patuxent River, Solomons, MD (31.8 mi)
Chesapeake Bay, Cambridge, MD (37.4 mi)
Washington Channel, Washington, DC (38.2 mi)
Coan River, Lewisetta, VA (38.3 mi)
Difficult Run, Oakton, VA (42.2 mi)
Potomac River, Scotland, MD (43.0 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (44.6 mi)
Dead Run, McLean, VA (44.8 mi)
Sligo Creek, Takoma Park, MD (46.1 mi)
Difficult Run, McLean, VA (46.7 mi)
Paint Branch, Calverton, MD (49.4 mi)
Fishing Bay, Crocheron, MD (54.6 mi)
Chesapeake Bay, Annapolis, MD (54.6 mi)
Severn River, Annapolis, MD (54.8 mi)
Choptank River, Cambridge, MD (55.6 mi)

Weather for Dahlgren, Virginia

Current Weather

84.9°F
Sunny
Conditions: Sunny
Humidity: 59%
Feels Like: 88.6°F
Wind: ESE 9.6 mph
Wind Gusts: 18.1 mph
Pressure: 30.11 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 8 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Thu
H: 91°F
L: 69°F
Patchy rain nearby
Fri
H: 100°F
L: 78°F
Partly Cloudy
Sat
H: 89°F
L: 80°F
Patchy rain nearby
Sun
H: 81°F
L: 75°F
Sunny
Mon
H: 94°F
L: 77°F

Air Quality

AQI: 2 - Moderate
PM2.5: 17.95 μg/m3
PM10: 19.24 μg/m3
Carbon Monoxide: 336.7 μg/m3
Nitrogen Dioxide: 6.29 μg/m3
Sulphur Dioxide: 3.33 μg/m3
Ozone: 94 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:14 PM
Sunset: 8:25 PM
Daylight: 14 hrs 21 mins
Moonrise: 5:31 AM
Moon Transit: 1:14 PM
Moonset: 8:46 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:03 AM - 4:33 AM
12:44 AM - 3:14 PM

Minor Periods

8:16 PM - 9:46 PM
5:01 AM - 6:31 AM

Action Rating: 5 out of 5

Heat Advisory issued July 24 at 1:19PM EDT until July 25 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 24, 2025, 1:19 PM
Expires: Thu July 24, 2025, 9:30 PM

* WHAT...Heat index values up to 109 expected. * WHERE...Washington DC, and portions of central, northern, and southern Maryland, and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Friday. * 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 July 24 at 1:19PM EDT until July 25 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 24, 2025, 1:19 PM
Expires: Thu July 24, 2025, 9:30 PM

* WHAT...Heat index values up to 109 expected. * WHERE...Washington DC, and portions of central, northern, and southern Maryland, and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Friday. * 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 July 24 at 1:19PM EDT until July 25 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 24, 2025, 1:19 PM
Expires: Thu July 24, 2025, 9:30 PM

* WHAT...Heat index values up to 109 expected. * WHERE...Stafford County. * WHEN...From 11 AM to 8 PM EDT Friday. * 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 July 24 at 1:19PM EDT until July 25 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 24, 2025, 1:19 PM
Expires: Thu July 24, 2025, 9:30 PM

* WHAT...Heat index values up to 109 expected. * WHERE...Washington DC, and portions of central, northern, and southern Maryland, and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Friday. * 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 July 24 at 1:19PM EDT until July 25 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 24, 2025, 1:19 PM
Expires: Thu July 24, 2025, 9:30 PM

* WHAT...Heat index values up to 109 expected. * WHERE...Stafford County. * WHEN...From 11 AM to 8 PM EDT Friday. * 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.
Thursday, July 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 80.2°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 19.23 μg/m3
PM10: 21.53 μg/m3
Carbon Monoxide: 353.65 μg/m3
Nitrogen Dioxide: 4.51 μg/m3
Sulphur Dioxide: 2.63 μg/m3
Ozone: 101.72 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:14 PM
Sunset: 8:25 PM
Daylight: 14 hrs 21 mins
Moonrise: 5:31 AM
Moon Transit: 1:14 PM
Moonset: 8:46 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:03 AM - 4:33 AM
12:44 AM - 3:14 PM

Minor Periods

8:16 PM - 9:46 PM
5:01 AM - 6:31 AM

Action Rating: 5 out of 5

Friday, July 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 86.2°F
Average Humidity: 68%
Chance of Rain: 84%
Wind: 9.8 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 18.46 μg/m3
PM10: 19.39 μg/m3
Carbon Monoxide: 348.24 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 8.58 μg/m3
Ozone: 108.84 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:14 PM
Sunset: 8:24 PM
Daylight: 14 hrs 19 mins
Moonrise: 6:44 AM
Moon Transit: 2:07 PM
Moonset: 9:19 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
1:37 PM - 4:07 PM

Minor Periods

8:49 PM - 10:19 PM
6:14 AM - 7:44 AM

Action Rating: 5 out of 5

Saturday, July 26, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 83.7°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 25.79 μg/m3
PM10: 26.51 μg/m3
Carbon Monoxide: 409.66 μg/m3
Nitrogen Dioxide: 15.73 μg/m3
Sulphur Dioxide: 11.66 μg/m3
Ozone: 115.12 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:14 PM
Sunset: 8:24 PM
Daylight: 14 hrs 18 mins
Moonrise: 7:54 AM
Moon Transit: 2:56 PM
Moonset: 9:46 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
2:26 PM - 4:56 PM

Minor Periods

9:16 PM - 10:46 PM
7:24 AM - 8:54 AM

Action Rating: 4 out of 5

Sunday, July 27, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 78.6°F
Average Humidity: 80%
Chance of Rain: 85%
Wind: 8.1 mph
UV Index: 2.3

Air Quality

AQI: 2 - Moderate
PM2.5: 25.14 μg/m3
PM10: 25.83 μg/m3
Carbon Monoxide: 394.79 μg/m3
Nitrogen Dioxide: 6.76 μg/m3
Sulphur Dioxide: 8.12 μg/m3
Ozone: 131.92 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:14 PM
Sunset: 8:23 PM
Daylight: 14 hrs 16 mins
Moonrise: 9:00 AM
Moon Transit: 3:40 PM
Moonset: 10:10 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

4:35 AM - 7:05 AM
3:10 PM - 5:40 PM

Minor Periods

9:40 PM - 11:10 PM
8:30 AM - 10:00 AM

Action Rating: 3 out of 5

Monday, July 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 84.1°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 10.5 mph
UV Index: 2.6

Air Quality

AQI: 2 - Moderate
PM2.5: 24.32 μg/m3
PM10: 24.42 μg/m3
Carbon Monoxide: 516.72 μg/m3
Nitrogen Dioxide: 16.81 μg/m3
Sulphur Dioxide: 10.6 μg/m3
Ozone: 73.54 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:14 PM
Sunset: 8:22 PM
Daylight: 14 hrs 14 mins
Moonrise: 10:03 AM
Moon Transit: 4:22 PM
Moonset: 10:32 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.3%

Best Times for Fishing or Hunting

Major Periods

5:18 AM - 7:48 AM
3:52 PM - 6:22 PM

Minor Periods

10:02 PM - 11:32 PM
9:33 AM - 11:03 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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