Big Turkey Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Big Turkey Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Big Turkey Lake today is 16.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 18.2°C | 18.5°C | |
| OCT 6 | 18.3°C | 18.5°C | |
| OCT 7 | 18.2°C | 18.5°C | |
| OCT 8 | 17.2°C | 18.5°C | |
| OCT 9 | 17.4°C | 18.5°C | |
| OCT 10 | 17.4°C | 18.5°C | |
| OCT 11 | 16.7°C | 18.5°C | |
| OCT 12 | 16.9°C | 18.5°C | |
| OCT 13 | 18.5°C | 16.3°C | |
| OCT 14 | 18.5°C | 16.4°C | |
| OCT 15 | 18.5°C | 16.5°C | |
| OCT 16 | 18.5°C | 16.7°C | |
| OCT 17 | 18.5°C | 16.8°C | |
| OCT 18 | 18.5°C | 16.9°C | |
| OCT 19 | 18.5°C | 17.0°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 | 0°C | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 5°C | 9°C |
| April | 6°C | 11°C | 16°C |
| May | 11°C | 15°C | 19°C |
| June | 15°C | 20°C | 24°C |
| July | 19°C | 24°C | 29°C |
| August | 17°C | 23°C | 29°C |
| September | 20°C | 24°C | 27°C |
| October | 15°C | 19°C | 22°C |
| November | 5°C | 11°C | 16°C |
| December | 1°C | 5°C | 8°C |
Big Turkey Lake: Water Temperature by Location
Big Turkey Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Big Turkey Lake in Indiana typically follows the seasonal temperature patterns of small Midwestern inland lakes. In winter the surface often approaches freezing, about 32°F (0°C), and can remain just above that in deeper water at roughly 34–40°F (1–4°C) under ice. Spring warming moves temperatures through the 40–60°F range (4–16°C) as stratification begins. By summer the lake usually reaches its warmest levels, commonly 70–80°F (21–27°C) in July and August, with sheltered shallow bays occasionally rising into the low 80s (27–29°C) during heat spells. Fall sees a steady decline back into the 50–65°F range (10–18°C) as cooling and turnover occur. Exact values vary with depth, wind, recent weather, and inflows.
Swimming is generally permitted at Big Turkey Lake where public access or private beaches exist, but it is governed by local rules and advisories. The practical swim season tends to be late spring through early fall when surface temperatures climb into the mid‑60s Fahrenheit (around 18°C) or warmer; colder water increases the risk of cold shock and hypothermia. Water quality, algae blooms, boat traffic, and underwater hazards are the typical reasons authorities might restrict swimming, so checking current local advisories and signage before entering the water is recommended.