Boone Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Boone Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Boone Lake today is 23.5°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 |
|---|---|---|---|
| SEP 14 | 25.2°C | 25.5°C | |
| SEP 15 | 25.2°C | 25.5°C | |
| SEP 16 | 25.1°C | 25.5°C | |
| SEP 17 | 24.9°C | 25.5°C | |
| SEP 18 | 22.3°C | 25.5°C | |
| SEP 19 | 22.7°C | 25.5°C | |
| SEP 20 | 23.2°C | 25.5°C | |
| SEP 21 | 23.5°C | 25.5°C | |
| SEP 22 | 25.5°C | 23.6°C | |
| SEP 23 | 25.5°C | 23.7°C | |
| SEP 24 | 25.5°C | 23.8°C | |
| SEP 25 | 25.5°C | 23.9°C | |
| SEP 26 | 25.5°C | 24.0°C | |
| SEP 27 | 25.5°C | 24.1°C | |
| SEP 28 | 25.5°C | 24.2°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 | 4°C | 11°C | 17°C |
| February | 4°C | 12°C | 19°C |
| March | 6°C | 13°C | 19°C |
| April | 12°C | 19°C | 25°C |
| May | 16°C | 21°C | 26°C |
| June | 19°C | 23°C | 27°C |
| July | 23°C | 28°C | 32°C |
| August | 23°C | 27°C | 30°C |
| September | 21°C | 26°C | 30°C |
| October | 16°C | 21°C | 26°C |
| November | 11°C | 17°C | 22°C |
| December | 5°C | 11°C | 16°C |
Boone Lake: Water Temperature by Location
Boone Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Boone Lake, a TVA reservoir in northeastern Tennessee, experiences marked seasonal changes in surface water temperature. In winter the surface commonly falls to roughly 32–50°F (0–10°C). Spring brings a steady warming, with surface readings often in the 50–70°F range (10–21°C) as air temperatures rise. During summer, surface temperatures typically reach 70–85°F (21–29°C) and can climb into the upper 80s°F (~30–31°C) in particularly hot, shallow areas. In autumn the lake cools again, returning through the 50–70°F (10–21°C) band. These values vary with depth, local weather, inflows, and time of day; deeper water remains significantly colder than surface readings.
Swimming on Boone Lake is generally possible because it is a public reservoir used for recreation, but it is not organized around lifeguarded public beaches in many places, so access is often informal from shorelines, boat docks, or private property. Swimmers should be aware of boat traffic, changing currents near inlets and dam structures, submerged hazards, and variable water quality; these factors influence safety more than temperature alone. Observing posted warnings, using life jackets when appropriate, and avoiding high-traffic areas make swimming safer when conditions and temperatures are comfortable.