Water Temperature of Upper Machedoc Creek in Dahlgren, VA

Current Water Temperature

69.8°F

Measurement Time: Wednesday, May 21, 2025, 9:54 AM EDT

Today's Tides

 Low: May 21, 4:04 AM, 0.37 ft
High: May 21, 9:55 AM, 1.74 ft
 Low: May 21, 4:35 PM, 0.22 ft
High: May 21, 10:41 PM, 1.75 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

59.5°F
Light rain
Conditions: Light rain
Humidity: 90%
Feels Like: 59.5°F
Wind: ESE 11.9 mph
Wind Gusts: 16.8 mph
Pressure: 29.88 in
Precipitation: 0.1 in
Cloud Cover: 100%
Visibility: 1 mi
UV Index: 0.3

Five Day Weather Forecast

Heavy rain
Wed
H: 60°F
L: 56°F
Moderate rain
Thu
H: 56°F
L: 51°F
Patchy rain nearby
Fri
H: 63°F
L: 50°F
Partly Cloudy
Sat
H: 68°F
L: 50°F
Patchy rain nearby
Sun
H: 71°F
L: 60°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:04 PM
Sunset: 8:18 PM
Daylight: 14 hrs 26 mins
Moonrise: 2:30 AM
Moon Transit: 8:11 AM
Moonset: 2:03 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
12:00 AM - 12:00 AM

Minor Periods

1:33 PM - 3:03 PM
2:00 AM - 3:30 AM

Action Rating: 2 out of 5

Coastal Flood Advisory issued May 21 at 7:22AM EDT until May 22 at 12:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Wed May 21, 2025, 7:22 AM
Expires: Wed May 21, 2025, 3:30 PM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until midnight EDT tonight, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides two to two and a half feet above normal. The next high tide at Dahlgren is at 9:55 AM and 10:41 PM. The next high tide at Goose Bay is at 11:15 AM and 11:50 PM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued May 21 at 7:22AM EDT until May 22 at 12:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Wed May 21, 2025, 7:22 AM
Expires: Wed May 21, 2025, 3:30 PM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until midnight EDT tonight, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides two to two and a half feet above normal. The next high tide at Dahlgren is at 9:55 AM and 10:41 PM. The next high tide at Goose Bay is at 11:15 AM and 11:50 PM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued May 21 at 7:22AM EDT until May 22 at 12:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Wed May 21, 2025, 7:22 AM
Expires: Wed May 21, 2025, 3:30 PM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until midnight EDT tonight, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides two to two and a half feet above normal. The next high tide at Dahlgren is at 9:55 AM and 10:41 PM. The next high tide at Goose Bay is at 11:15 AM and 11:50 PM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued May 21 at 7:22AM EDT until May 22 at 12:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Wed May 21, 2025, 7:22 AM
Expires: Wed May 21, 2025, 3:30 PM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until midnight EDT tonight, especially around the time of high tide. * IMPACTS...At 3.5 feet, water reaches yards near Cobb Island and docks near Dahlgren. * ADDITIONAL DETAILS...Tides two to two and a half feet above normal. The next high tide at Dahlgren is at 9:55 AM and 10:41 PM. The next high tide at Goose Bay is at 11:15 AM and 11:50 PM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Coastal Flood Advisory issued May 21 at 7:22AM EDT until May 22 at 5:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Wed May 21, 2025, 7:22 AM
Expires: Wed May 21, 2025, 3:30 PM

* WHAT...Up to one foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Anne Arundel County. * WHEN...Until 5 AM EDT Thursday, especially around the time of high tide. * IMPACTS...At 3.0 feet, Compromise Street begins to flood in Annapolis. Flooding of much of the City Dock parking lot is occurring. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 12:28 PM and 1:32 AM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.


Wednesday, May 21, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 58.1°F
Average Humidity: 92%
Chance of Rain: 85%
Wind: 19 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 8.35 μg/m3
PM10: 10.12 μg/m3
Carbon Monoxide: 283.9 μg/m3
Nitrogen Dioxide: 4.78 μg/m3
Sulphur Dioxide: 3.83 μg/m3
Ozone: 93.38 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:04 PM
Sunset: 8:18 PM
Daylight: 14 hrs 26 mins
Moonrise: 2:30 AM
Moon Transit: 8:11 AM
Moonset: 2:03 PM
Moon Phase: Last Quarter
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

7:41 AM - 10:11 AM
12:00 AM - 12:00 AM

Minor Periods

1:33 PM - 3:03 PM
2:00 AM - 3:30 AM

Action Rating: 2 out of 5

Thursday, May 22, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 54.6°F
Average Humidity: 94%
Chance of Rain: 88%
Wind: 14.8 mph
UV Index: 0

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: 5:51 AM
Sun Transit: 1:04 PM
Sunset: 8:19 PM
Daylight: 14 hrs 28 mins
Moonrise: 2:55 AM
Moon Transit: 8:58 AM
Moonset: 3:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

8:28 AM - 10:58 AM
12:16 AM - 2:46 PM

Minor Periods

2:44 PM - 4:14 PM
2:25 AM - 3:55 AM

Action Rating: 2 out of 5

Friday, May 23, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 57.1°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 13 mph
UV Index: 3

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: 5:51 AM
Sun Transit: 1:04 PM
Sunset: 8:20 PM
Daylight: 14 hrs 29 mins
Moonrise: 3:20 AM
Moon Transit: 12:00 AM
Moonset: 4:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

3:57 PM - 5:27 PM
2:50 AM - 4:20 AM

Action Rating: 2 out of 5

Saturday, May 24, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 60.1°F
Average Humidity: 62%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 5

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: 5:50 AM
Sun Transit: 1:05 PM
Sunset: 8:21 PM
Daylight: 14 hrs 31 mins
Moonrise: 3:48 AM
Moon Transit: 10:38 AM
Moonset: 5:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:08 AM - 12:38 AM

Minor Periods

5:13 PM - 6:43 PM
3:18 AM - 4:48 AM

Action Rating: 2 out of 5

Sunday, May 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 64.4°F
Average Humidity: 75%
Chance of Rain: 83%
Wind: 10.1 mph
UV Index: 4

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: 5:49 AM
Sun Transit: 1:05 PM
Sunset: 8:21 PM
Daylight: 14 hrs 32 mins
Moonrise: 4:20 AM
Moon Transit: 11:34 AM
Moonset: 7:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 AM
11:04 AM - 1:34 PM

Minor Periods

6:33 PM - 8:03 PM
3:50 AM - 5:20 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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