Lake Frederick — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Frederick, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Frederick today is 23.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 23 | 23.7°C | 23.5°C | |
| JUN 24 | 23.5°C | 23.5°C | |
| JUN 25 | 23.5°C | 23.5°C | |
| JUN 26 | 23.5°C | 23.5°C | |
| JUN 27 | 23.7°C | 23.5°C | |
| JUN 28 | 23.5°C | 23.5°C | |
| JUN 29 | 23.7°C | 23.5°C | |
| JUN 30 | 23.8°C | 23.5°C | |
| JUL 1 | 27.8°C | 24.0°C | |
| JUL 2 | 27.8°C | 24.2°C | |
| JUL 3 | 27.8°C | 24.4°C | |
| JUL 4 | 27.8°C | 24.6°C | |
| JUL 5 | 27.8°C | 24.8°C | |
| JUL 6 | 27.8°C | 25.0°C | |
| JUL 7 | 27.8°C | 25.2°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 5°C | 8°C |
| February | 1°C | 5°C | 7°C |
| March | 2°C | 8°C | 13°C |
| April | 7°C | 13°C | 19°C |
| May | 15°C | 20°C | 25°C |
| June | 20°C | 24°C | 27°C |
| July | 25°C | 28°C | 30°C |
| August | 20°C | 26°C | 32°C |
| September | 21°C | 24°C | 27°C |
| October | 17°C | 20°C | 22°C |
| November | 7°C | 13°C | 17°C |
| December | 4°C | 6°C | 9°C |
Lake Frederick: Water Temperature by Location
Lake Frederick: Weather Forecast
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July 6
Location & Local Information
Lake Frederick, a man-made reservoir in northern Virginia, typically shows a clear seasonal cycle in surface water temperature. In winter months the surface often hovers near freezing to the mid-40s °F (about 1–7 °C). Spring brings steady warming, with surface readings commonly in the mid-40s to mid-60s °F (7–18 °C) as air temperatures rise and stratification begins. During summer the shallow bays and surface layer can reach the 70s to mid-80s °F (21–29 °C), occasionally climbing toward 86 °F (30 °C) during heat waves. In fall the lake cools again, with surface temperatures generally falling through the 60s into the 50s °F (10–15 °C) as turnover approaches. Actual temperatures vary by depth, sun exposure and wind; deeper waters stay colder year-round and shallow coves heat up fastest.
Swimming at Lake Frederick is limited and generally discouraged because there is no designated public swim beach, no lifeguards, and routine water-quality monitoring for recreational swimming is not provided. The lake is primarily managed for boating, angling and wildlife, and local regulations or signage may prohibit or advise against wading and swimming for safety reasons and concern about bacterial contamination or harmful algal blooms after heavy rains. Visitors should check posted rules and conditions before entering the water and treat summer surface temperatures as comfortable only with appropriate precautions.