Water Temperature of Upper Machedoc Creek in Dahlgren, VA
Current Water Temperature
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 CenterSponsored Content
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

Humidity: 85%
Feels Like: 82.7°F
Wind: NNW 4 mph
Wind Gusts: 8.5 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 4 mi
UV Index: 0
Five Day Weather Forecast

Wed
H: 102°F
L: 82°F

Thu
H: 99°F
L: 74°F

Fri
H: 90°F
L: 76°F

Sat
H: 95°F
L: 69°F

Sun
H: 88°F
L: 73°F
Air Quality
Nitrogen Dioxide: 10.18 μg/m3
Sulphur Dioxide: 19.24 μg/m3
Ozone: 114 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
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 AM12:59 AM - 3:29 PM
Minor Periods
8:55 PM - 10:25 PM4:59 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.
Weather Forecast
Average Temperature: 92°F
Average Humidity: 59%
Wind: 20.4 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 11.06 μg/m3
Sulphur Dioxide: 12.42 μg/m3
Ozone: 124.08 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
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 AM12:59 AM - 3:29 PM
Minor Periods
8:55 PM - 10:25 PM4:59 AM - 6:29 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 87.3°F
Average Humidity: 74%
Wind: 13.9 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 11.3 μg/m3
Sulphur Dioxide: 11.57 μg/m3
Ozone: 133.6 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
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 AM2:01 PM - 4:31 PM
Minor Periods
9:43 PM - 11:13 PM6:10 AM - 7:40 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 81.7°F
Average Humidity: 88%
Wind: 9.6 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 6.14 μg/m3
Sulphur Dioxide: 4.8 μg/m3
Ozone: 124.72 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 50 mins
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 AM2:57 PM - 5:27 PM
Minor Periods
10:21 PM - 11:51 PM7:23 AM - 8:53 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 80.8°F
Average Humidity: 75%
Wind: 13 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 9.93 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 88.31 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 49 mins
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 AM3:48 PM - 6:18 PM
Minor Periods
12:00 AM - 12:00 AM8:35 AM - 10:05 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 77.7°F
Average Humidity: 83%
Wind: 9.6 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 8:36 PM
Daylight: 14 hrs 49 mins
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 AM4:34 PM - 7:04 PM
Minor Periods
9:42 AM - 11:12 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5