Allatoona Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Allatoona Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Allatoona Lake today is 57°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| MAR 9 | 53°F | 53°F | |
| MAR 10 | 54°F | 53°F | |
| MAR 11 | 60°F | 53°F | |
| MAR 12 | 61°F | 53°F | |
| MAR 13 | 62°F | 53°F | |
| MAR 14 | 62°F | 53°F | |
| MAR 15 | 57°F | 53°F | |
| MAR 16 | 57°F | 53°F | |
| MAR 17 | 53°F | 57°F | |
| MAR 18 | 53°F | 57°F | |
| MAR 19 | 53°F | 56°F | |
| MAR 20 | 53°F | 56°F | |
| MAR 21 | 53°F | 56°F | |
| MAR 22 | 53°F | 56°F | |
| MAR 23 | 53°F | 56°F |
* 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 | 39°F | 46°F | 54°F |
| February | 41°F | 47°F | 55°F |
| March | 43°F | 53°F | 63°F |
| April | 55°F | 64°F | 72°F |
| May | 66°F | 73°F | 81°F |
| June | 72°F | 79°F | 86°F |
| July | 75°F | 82°F | 88°F |
| August | 75°F | 81°F | 86°F |
| September | 72°F | 77°F | 82°F |
| October | 66°F | 73°F | 79°F |
| November | 54°F | 61°F | 68°F |
| December | 45°F | 49°F | 55°F |
Allatoona Lake: Water Temperature by Location
Allatoona Lake: Weather Forecast
March 17
March 18
March 19
March 20
March 21
Location & Local Information
Allatoona Lake’s surface water temperatures change considerably through the year. In winter the lake commonly falls into the mid-to-upper 30s to around 50 °F (about 2–10 °C). Spring brings warming waters typically in the 50s to lower 70s °F (10–22 °C) as surface layers respond to air temperatures. Summer is when the lake is warmest, with surface readings often in the 70s to mid-80s °F (21–30 °C) and occasionally reaching the upper 80s or low 90s °F (31–33 °C) in shallow, sun-exposed coves. By fall temperatures generally decline back into the 50s and 60s °F (10–20 °C). Deeper zones remain substantially cooler year-round, so swimmers can encounter sharp temperature differences between shallow and deeper water.
Swimming is permitted at Allatoona in many of the lake’s recreation areas and designated beaches because the reservoir is managed for public recreation. However, access is typically limited to posted swim areas rather than unrestricted shorelines because of hazards such as boat traffic, submerged structures, steep drop-offs and variable currents. Seasonal lifeguard coverage, water-quality advisories and local rules vary, so swimmers should use marked beaches, heed posted warnings, and be mindful that cold-season swimming carries a real hypothermia risk while warm-season conditions can produce stronger surface activity and occasional water-quality concerns.