Water Temperature of Upper Machedoc Creek in Dahlgren, VA
Current Water Temperature
40.1°F
Measurement Time: Sunday, December 14, 2025, 1:54 PM EST
Today's Tides
Low: December 14, 4:38 AM, 0.04 ft
High: December 14, 10:51 AM, 1.45 ft
Low: December 14, 5:22 PM, 0.14 ft
High: December 14, 11:12 PM, 1.24 ft
Temperature Locations
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Local Points of Interest
Potomac River; Naval Surface Warfare CenterSponsored Content
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
28.9°F

Conditions: Partly Cloudy
Humidity: 49%
Feels Like: 16°F
Wind: NW 19.9 mph
Wind Gusts: 22.9 mph
Humidity: 49%
Feels Like: 16°F
Wind: NW 19.9 mph
Wind Gusts: 22.9 mph
Pressure: 30.15 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 6 mi
UV Index: 1.1
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 6 mi
UV Index: 1.1
Five Day Weather Forecast

Sun
H: 36°F
L: 21°F

Mon
H: 37°F
L: 21°F

Tue
H: 42°F
L: 29°F

Wed
H: 47°F
L: 32°F

Thu
H: 52°F
L: 37°F
Air Quality
AQI:
2 - Moderate
PM2.5:
3.45 μg/m3
PM10:
3.45 μg/m3
Carbon Monoxide: 171.85 μg/m3
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 71 μg/m3
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 71 μg/m3
Astronomical
Sunrise: 7:17 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Moonrise: 2:18 AM
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%
Best Times for Fishing or Hunting
Major Periods
7:22 AM - 9:52 AM9:30 PM - 12:00 PM
Minor Periods
12:49 AM - 2:19 PM1:48 AM - 3:18 AM
Action Rating: 3 out of 5
Sunday, December 14, 2025
Weather Forecast
Conditions: Moderate or heavy snow showers
Average Temperature: 30.1°F
Average Humidity: 67%
Average Temperature: 30.1°F
Average Humidity: 67%
Chance of Rain: 72%
Wind: 19.9 mph
UV Index: 0.4
Wind: 19.9 mph
UV Index: 0.4
Air Quality
AQI:
1 - Good
PM2.5:
10.61 μg/m3
PM10:
10.67 μg/m3
Carbon Monoxide: 221.45 μg/m3
Nitrogen Dioxide: 20.36 μg/m3
Sulphur Dioxide: 7.48 μg/m3
Ozone: 44.4 μg/m3
Nitrogen Dioxide: 20.36 μg/m3
Sulphur Dioxide: 7.48 μg/m3
Ozone: 44.4 μg/m3
Astronomical
Sunrise: 7:17 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Moonrise: 2:18 AM
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%
Best Times for Fishing or Hunting
Major Periods
7:22 AM - 9:52 AM9:30 PM - 12:00 PM
Minor Periods
12:49 AM - 2:19 PM1:48 AM - 3:18 AM
Action Rating: 3 out of 5
Monday, December 15, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 27.9°F
Average Humidity: 44%
Average Temperature: 27.9°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 19 mph
UV Index: 0.4
Wind: 19 mph
UV Index: 0.4
Air Quality
AQI:
1 - Good
PM2.5:
4.35 μg/m3
PM10:
4.37 μg/m3
Carbon Monoxide: 174.85 μg/m3
Nitrogen Dioxide: 7.81 μg/m3
Sulphur Dioxide: 5.33 μg/m3
Ozone: 64 μg/m3
Nitrogen Dioxide: 7.81 μg/m3
Sulphur Dioxide: 5.33 μg/m3
Ozone: 64 μg/m3
Astronomical
Sunrise: 7:18 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Moonrise: 3:18 AM
Moon Transit: 8:34 AM
Moonset: 1:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.7%
Moon Transit: 8:34 AM
Moonset: 1:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.7%
Best Times for Fishing or Hunting
Major Periods
8:04 AM - 10:34 AM12:00 AM - 12:00 AM
Minor Periods
1:14 PM - 2:44 PM2:48 AM - 4:18 AM
Action Rating: 2 out of 5
Tuesday, December 16, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 34.6°F
Average Humidity: 37%
Average Temperature: 34.6°F
Average Humidity: 37%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 0.4
Wind: 8.7 mph
UV Index: 0.4
Air Quality
AQI:
1 - Good
PM2.5:
9.41 μg/m3
PM10:
9.47 μg/m3
Carbon Monoxide: 211.01 μg/m3
Nitrogen Dioxide: 11.57 μg/m3
Sulphur Dioxide: 8.15 μg/m3
Ozone: 52.64 μg/m3
Nitrogen Dioxide: 11.57 μg/m3
Sulphur Dioxide: 8.15 μg/m3
Ozone: 52.64 μg/m3
Astronomical
Sunrise: 7:19 AM
Sun Transit: 12:04 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Sun Transit: 12:04 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Moonrise: 4:19 AM
Moon Transit: 9:18 AM
Moonset: 2:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%
Moon Transit: 9:18 AM
Moonset: 2:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%
Best Times for Fishing or Hunting
Major Periods
8:48 AM - 11:18 AM12:00 AM - 12:00 AM
Minor Periods
1:43 PM - 3:13 PM3:49 AM - 5:19 AM
Action Rating: 2 out of 5
Wednesday, December 17, 2025
Weather Forecast
Conditions: Partly Cloudy
Average Temperature: 39.1°F
Average Humidity: 69%
Average Temperature: 39.1°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 0.3
Wind: 12.3 mph
UV Index: 0.3
Air Quality
AQI:
1 - Good
PM2.5:
15.28 μg/m3
PM10:
15.43 μg/m3
Carbon Monoxide: 242.44 μg/m3
Nitrogen Dioxide: 11.04 μg/m3
Sulphur Dioxide: 5.97 μg/m3
Ozone: 47.36 μg/m3
Nitrogen Dioxide: 11.04 μg/m3
Sulphur Dioxide: 5.97 μg/m3
Ozone: 47.36 μg/m3
Astronomical
Sunrise: 7:19 AM
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 31 mins
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 31 mins
Moonrise: 5:20 AM
Moon Transit: 10:05 AM
Moonset: 2:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.5%
Moon Transit: 10:05 AM
Moonset: 2:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:35 AM - 12:05 AM
Minor Periods
2:16 PM - 3:46 PM4:50 AM - 6:20 AM
Action Rating: 2 out of 5
Thursday, December 18, 2025
Weather Forecast
Conditions: Sunny
Average Temperature: 43.2°F
Average Humidity: 85%
Average Temperature: 43.2°F
Average Humidity: 85%
Chance of Rain: 0%
Wind: 16.1 mph
UV Index: 0
Wind: 16.1 mph
UV Index: 0
Air Quality
AQI:
2 - Moderate
PM2.5:
17.73 μg/m3
PM10:
17.9 μg/m3
Carbon Monoxide: 274.81 μg/m3
Nitrogen Dioxide: 11.48 μg/m3
Sulphur Dioxide: 5.56 μg/m3
Ozone: 41.77 μg/m3
Nitrogen Dioxide: 11.48 μg/m3
Sulphur Dioxide: 5.56 μg/m3
Ozone: 41.77 μg/m3
Astronomical
Sunrise: 7:20 AM
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 30 mins
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 30 mins
Moonrise: 6:21 AM
Moon Transit: 10:55 AM
Moonset: 3:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%
Moon Transit: 10:55 AM
Moonset: 3:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:25 AM - 12:55 AM
Minor Periods
2:56 PM - 4:26 PM5:51 AM - 7:21 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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