Lake Graham — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Graham, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Graham today is 25.1°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 | 25.3°C | 26.5°C | |
| SEP 15 | 25.3°C | 26.5°C | |
| SEP 16 | 25.2°C | 26.5°C | |
| SEP 17 | 25.1°C | 26.5°C | |
| SEP 18 | 25.4°C | 26.5°C | |
| SEP 19 | 25.3°C | 26.5°C | |
| SEP 20 | 25.2°C | 26.5°C | |
| SEP 21 | 25.1°C | 26.5°C | |
| SEP 22 | 26.5°C | 25.2°C | |
| SEP 23 | 26.5°C | 25.2°C | |
| SEP 24 | 26.5°C | 25.3°C | |
| SEP 25 | 26.5°C | 25.4°C | |
| SEP 26 | 26.5°C | 25.5°C | |
| SEP 27 | 26.5°C | 25.5°C | |
| SEP 28 | 26.5°C | 25.6°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 | 3°C | 6°C | 10°C |
| February | 2°C | 6°C | 11°C |
| March | 4°C | 10°C | 17°C |
| April | 9°C | 16°C | 23°C |
| May | 15°C | 20°C | 26°C |
| June | 19°C | 23°C | 28°C |
| July | 23°C | 27°C | 32°C |
| August | 21°C | 26°C | 31°C |
| September | 23°C | 27°C | 30°C |
| October | 18°C | 22°C | 26°C |
| November | 10°C | 15°C | 19°C |
| December | 5°C | 8°C | 11°C |
Lake Graham: Water Temperature by Location
Lake Graham: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Graham in Tennessee typically follows the seasonal temperature patterns of inland southeastern reservoirs. In winter the surface water often cools into the lower 40s to low 50s °F (about 4–11 °C). As spring warms, surface temperatures steadily climb into the 50s and 60s °F (10–20 °C). Peak summer temperatures commonly reach the low to mid 70s and sometimes upper 70s °F (around 21–26 °C), with occasional days pushing into the 80s °F (27–30 °C) in shallow bays. In autumn the lake cools back through the 50s and 60s °F (10–20 °C) toward winter levels. Temperature can vary locally with depth, shading, inflow, and recent weather.
Swimming is generally allowed at lakes like Lake Graham in designated areas when local authorities and land managers permit it, because safety and water quality are the controlling factors. Managers may close swimming areas for high bacterial counts, harmful algal blooms, dangerous currents, poor visibility, or heavy boat traffic, and signs or advisories are posted when restrictions apply. Visitors should follow posted rules, check current water quality notices before entering the water, and consider seasonal temperature effects on hypothermia risk and comfort.