Water Temperature of Upper Machedoc Creek in Dahlgren, VA
Current Water Temperature
Measurement Time: Monday, June 15, 2026, 6:42 PM EDT
Today's Tides
High: June 15, 3:21 AM, 2.3 ft
Low: June 15, 10:21 AM, 0.1 ft
High: June 15, 3:50 PM, 1.8 ft
Low: June 15, 10:06 PM, 0.0 ft
Temperature Locations
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Local Points of Interest
Potomac River; Naval Surface Warfare CenterStation Name: Dahlgren
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 10 feet
Sensor Depth: 2 feet
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 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

Five Day Weather Forecast

Mon
H: 80°F
L: 68°F

Tue
H: 77°F
L: 60°F

Wed
H: 89°F
L: 64°F

Thu
H: 90°F
L: 76°F

Fri
H: 78°F
L: 67°F
Air Quality
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 110 μg/m3
Astronomical
Sun Transit: 1:08 PM
Sunset: 8:34 PM
Daylight: 14 hrs 50 mins
Moon Transit: 1:47 PM
Moonset: 9:44 PM
Moon Phase: New
Moon Illumination: 3.8%
Best Times for Fishing or Hunting
Major Periods
2:32 AM - 5:02 AM1:17 PM - 3:47 PM
Minor Periods
9:14 PM - 10:44 PM5:18 AM - 6:48 AM
Action Rating: 4 out of 5
Flood Watch issued June 15 at 2:18AM CDT until June 17 at 7:00AM CDT by NWS New Orleans LA
Effective: Mon June 15, 2026, 3:18 AM
Expires: Mon June 15, 2026, 8:00 PM
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast Louisiana, including the following parishes, Central Tangipahoa, East Baton Rouge, East Feliciana, Eastern Ascension, Iberville, Lower Tangipahoa, Northern Livingston, Northern St. Tammany, Northern Tangipahoa, Pointe Coupee, Southeast St. Tammany, Southern Livingston, Southwestern St. Tammany, St. Helena, Washington, West Baton Rouge, West Feliciana and Western Ascension and southern Mississippi, including the following counties, Amite, Pike, Walthall and Wilkinson. * WHEN...From 7 AM CDT this morning through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - A very moist airmass will be in place across the area for the next several days. Multiple rounds of showers and thunderstorms with locally heavy rainfall are expected through Tuesday night. Widespread rainfall amounts of 2 to 4 inches are expected in the watch area through Tuesday night with isolated totals considerably higher. Additional heavy rainfall is possible Wednesday and Wednesday night. - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Coastal Flood Statement issued June 15 at 3:01AM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA
Effective: Mon June 15, 2026, 3:01 AM
Expires: Mon June 15, 2026, 6:00 PM
* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.3 to 7.0 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Tuesday night. The high tide cycles tonight, Monday night and Tuesday night are of the most concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.
Do not drive through flooded roadways.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.81 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 92.33 μg/m3
Astronomical
Sun Transit: 1:08 PM
Sunset: 8:34 PM
Daylight: 14 hrs 50 mins
Moon Transit: 1:47 PM
Moonset: 9:44 PM
Moon Phase: New
Moon Illumination: 3.8%
Best Times for Fishing or Hunting
Major Periods
2:32 AM - 5:02 AM1:17 PM - 3:47 PM
Minor Periods
9:14 PM - 10:44 PM5:18 AM - 6:48 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.53 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 81.92 μg/m3
Astronomical
Sun Transit: 1:08 PM
Sunset: 8:34 PM
Daylight: 14 hrs 50 mins
Moon Transit: 2:53 PM
Moonset: 10:36 PM
Moon Phase: New
Moon Illumination: 1.0%
Best Times for Fishing or Hunting
Major Periods
3:39 AM - 6:09 AM2:23 PM - 4:53 PM
Minor Periods
10:06 PM - 11:36 PM6:32 AM - 8:02 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.69 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 96.08 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 8:34 PM
Daylight: 14 hrs 50 mins
Moon Transit: 3:54 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%
Best Times for Fishing or Hunting
Major Periods
4:42 AM - 7:12 AM3:24 PM - 5:54 PM
Minor Periods
12:00 AM - 12:00 AM7:50 AM - 9:20 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 86 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 8:35 PM
Daylight: 14 hrs 51 mins
Moon Transit: 4:49 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM4:19 PM - 6:49 PM
Minor Periods
9:06 AM - 10:36 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.44 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 67 μg/m3
Astronomical
Sun Transit: 1:09 PM
Sunset: 8:35 PM
Daylight: 14 hrs 51 mins
Moon Transit: 5:38 PM
Moonset: 12:49 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%
Best Times for Fishing or Hunting
Major Periods
6:31 AM - 9:01 AM5:08 PM - 7:38 PM
Minor Periods
10:19 AM - 11:49 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
