Water Temperature of Upper Machedoc Creek in Dahlgren, VA

Current Water Temperature

82.4°F

Measurement Time: Wednesday, June 25, 2025, 5:30 AM EDT

Today's Tides

High: June 25, 3:12 AM, 2.21 ft
 Low: June 25, 10:09 AM, 0.19 ft
High: June 25, 3:39 PM, 1.78 ft
 Low: June 25, 9:55 PM, 0.05 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

79°F
Mist
Conditions: Mist
Humidity: 85%
Feels Like: 82.7°F
Wind: NNW 4 mph
Wind Gusts: 8.5 mph
Pressure: 30.09 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 4 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 102°F
L: 82°F
Moderate rain
Thu
H: 99°F
L: 74°F
Moderate rain
Fri
H: 90°F
L: 76°F
Patchy rain nearby
Sat
H: 95°F
L: 69°F
Moderate rain
Sun
H: 88°F
L: 73°F

Air Quality

PM2.5: 28.68 μg/m3
PM10: 31.27 μg/m3
Carbon Monoxide: 403.3 μg/m3
Nitrogen Dioxide: 10.18 μg/m3
Sulphur Dioxide: 19.24 μg/m3
Ozone: 114 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:10 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
Moonrise: 5:29 AM
Moon Transit: 1:29 PM
Moonset: 9:25 PM
Moon Phase: New
Moon Illumination: 1.6%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
12:59 AM - 3:29 PM

Minor Periods

8:55 PM - 10:25 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Heat Advisory issued June 24 at 8:43PM EDT until June 25 at 9:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Tue June 24, 2025, 8:43 PM
Expires: Wed June 25, 2025, 4:45 AM

* WHAT...Heat index values up to 108 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, central, northern, and northwest Virginia, and panhandle West Virginia. * WHEN...From 11 AM to 9 PM EDT Wednesday. * 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 24 at 8:43PM EDT until June 25 at 9:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Tue June 24, 2025, 8:43 PM
Expires: Wed June 25, 2025, 4:45 AM

* WHAT...Heat index values up to 108 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, central, northern, and northwest Virginia, and panhandle West Virginia. * WHEN...From 11 AM to 9 PM EDT Wednesday. * 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.
Wednesday, June 25, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 92°F
Average Humidity: 59%
Chance of Rain: 0%
Wind: 20.4 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 28.05 μg/m3
PM10: 31.52 μg/m3
Carbon Monoxide: 370.52 μg/m3
Nitrogen Dioxide: 11.06 μg/m3
Sulphur Dioxide: 12.42 μg/m3
Ozone: 124.08 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:10 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
Moonrise: 5:29 AM
Moon Transit: 1:29 PM
Moonset: 9:25 PM
Moon Phase: New
Moon Illumination: 1.6%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
12:59 AM - 3:29 PM

Minor Periods

8:55 PM - 10:25 PM
4:59 AM - 6:29 AM

Action Rating: 4 out of 5

Thursday, June 26, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 87.3°F
Average Humidity: 74%
Chance of Rain: 84%
Wind: 13.9 mph
UV Index: 2.6

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 40.53 μg/m3
PM10: 44.38 μg/m3
Carbon Monoxide: 354.76 μg/m3
Nitrogen Dioxide: 11.3 μg/m3
Sulphur Dioxide: 11.57 μg/m3
Ozone: 133.6 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
Moonrise: 6:40 AM
Moon Transit: 2:31 PM
Moonset: 10:13 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
2:01 PM - 4:31 PM

Minor Periods

9:43 PM - 11:13 PM
6:10 AM - 7:40 AM

Action Rating: 5 out of 5

Friday, June 27, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 81.7°F
Average Humidity: 88%
Chance of Rain: 83%
Wind: 9.6 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 33.56 μg/m3
PM10: 36.22 μg/m3
Carbon Monoxide: 378.73 μg/m3
Nitrogen Dioxide: 6.14 μg/m3
Sulphur Dioxide: 4.8 μg/m3
Ozone: 124.72 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
Moonrise: 7:53 AM
Moon Transit: 3:27 PM
Moonset: 10:51 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

4:17 AM - 6:47 AM
2:57 PM - 5:27 PM

Minor Periods

10:21 PM - 11:51 PM
7:23 AM - 8:53 AM

Action Rating: 3 out of 5

Saturday, June 28, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 80.8°F
Average Humidity: 75%
Chance of Rain: 88%
Wind: 13 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 27.68 μg/m3
PM10: 29.06 μg/m3
Carbon Monoxide: 476.87 μg/m3
Nitrogen Dioxide: 9.93 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 88.31 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 49 mins
Moonrise: 9:05 AM
Moon Transit: 4:18 PM
Moonset: 11:20 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
3:48 PM - 6:18 PM

Minor Periods

12:00 AM - 12:00 AM
8:35 AM - 10:05 AM

Action Rating: 2 out of 5

Sunday, June 29, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 77.7°F
Average Humidity: 83%
Chance of Rain: 85%
Wind: 9.6 mph
UV Index: 0.2

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 49 mins
Moonrise: 10:12 AM
Moon Transit: 5:04 PM
Moonset: 12:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

5:59 AM - 8:29 AM
4:34 PM - 7:04 PM

Minor Periods

9:42 AM - 11:12 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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