Fern Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Fern Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Fern Lake today is 18.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| OCT 5 | 21.2°C | 21.0°C | |
| OCT 6 | 20.5°C | 21.0°C | |
| OCT 7 | 21.0°C | 21.0°C | |
| OCT 8 | 20.0°C | 21.0°C | |
| OCT 9 | 20.3°C | 21.0°C | |
| OCT 10 | 18.9°C | 21.0°C | |
| OCT 11 | 19.7°C | 21.0°C | |
| OCT 12 | 19.5°C | 21.0°C | |
| OCT 13 | 21.0°C | 19.0°C | |
| OCT 14 | 21.0°C | 19.1°C | |
| OCT 15 | 21.0°C | 19.2°C | |
| OCT 16 | 21.0°C | 19.3°C | |
| OCT 17 | 21.0°C | 19.4°C | |
| OCT 18 | 21.0°C | 19.5°C | |
| OCT 19 | 21.0°C | 19.6°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 | 7°C | 11°C |
| February | 3°C | 7°C | 10°C |
| March | 5°C | 10°C | 15°C |
| April | 10°C | 16°C | 22°C |
| May | 16°C | 22°C | 27°C |
| June | 19°C | 25°C | 30°C |
| July | 21°C | 25°C | 30°C |
| August | 23°C | 27°C | 30°C |
| September | 22°C | 28°C | 33°C |
| October | 18°C | 21°C | 24°C |
| November | 10°C | 14°C | 18°C |
| December | 5°C | 9°C | 13°C |
Fern Lake: Water Temperature by Location
Fern Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Fern Lake in Kentucky experiences the same seasonal temperature patterns typical of small temperate lakes in the region: spring surface temperatures commonly rise from about 45–65°F (7–18°C) as warming begins, summer highs usually range from roughly 70–80°F (21–27°C) and can reach the low 80s°F (27–29°C) during heatwaves, fall cooling brings waters down to about 55–70°F (13–21°C), and winter conditions often see near‑freezing to around 40°F (0–4°C) at the surface in the coldest months. Actual readings at Fern Lake will vary with depth, daily weather, shading from vegetation, and inflows; deeper or spring‑fed sections stay cooler year‑round.
Whether swimming is allowed at Fern Lake depends on ownership and local rules rather than temperature alone. In many Kentucky lakes swimming is permitted in designated areas during warmer months when water quality and lifeguard or safety provisions meet park standards; conversely, private ownership, boating use, algae advisories, poor water quality, or conservation rules can prohibit swimming. Temperature matters for safety—warmer summer water is comfortable for recreation while colder conditions increase hypothermia risk—so swimmers should follow posted signs, check recent water‑quality advisories, and use caution about depth, underwater hazards, and changing conditions.