North Turtle Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in North Turtle Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in North Turtle Lake today is 17.4°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 |
|---|---|---|---|
| SEP 13 | 20.3°C | 21.0°C | |
| SEP 14 | 20.4°C | 21.0°C | |
| SEP 15 | 19.4°C | 21.0°C | |
| SEP 16 | 19.3°C | 21.0°C | |
| SEP 17 | 18.2°C | 21.0°C | |
| SEP 18 | 17.3°C | 21.0°C | |
| SEP 19 | 17.6°C | 21.0°C | |
| SEP 20 | 16.9°C | 21.0°C | |
| SEP 21 | 21.0°C | 17.6°C | |
| SEP 22 | 21.0°C | 17.8°C | |
| SEP 23 | 21.0°C | 17.9°C | |
| SEP 24 | 21.0°C | 18.1°C | |
| SEP 25 | 21.0°C | 18.3°C | |
| SEP 26 | 21.0°C | 18.5°C | |
| SEP 27 | 21.0°C | 18.7°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 | 2°C | 7°C | 12°C |
| February | 2°C | 9°C | 15°C |
| March | 1°C | 9°C | 17°C |
| April | 2°C | 11°C | 20°C |
| May | 7°C | 14°C | 21°C |
| June | 15°C | 19°C | 24°C |
| July | 17°C | 22°C | 27°C |
| August | 20°C | 24°C | 28°C |
| September | 17°C | 21°C | 25°C |
| October | 5°C | 12°C | 18°C |
| November | 3°C | 7°C | 11°C |
| December | 2°C | 6°C | 8°C |
North Turtle Lake: Water Temperature by Location
North Turtle Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
North Turtle Lake, like many small lakes in northern Minnesota, follows a clear seasonal cycle in surface water temperature. In spring the lake typically runs cold, often from about 40–60°F (4–16°C) as ice melts and the water mixes. Summer brings the warmest conditions; surface readings commonly reach 70–80°F (21–27°C) on sunny days and can briefly climb into the low 80s°F (27–29°C) during heat spells. By fall the water cools again, usually dropping into the 50–65°F range (10–18°C) as air temperatures fall. In winter the lake is often ice-covered and the water just below the ice stays near freezing, around 32–39°F (0–4°C), until spring turnover.
Swimming is generally possible and commonly done during the open-water months because summer surface temperatures are comfortable for recreation and many accesses or beaches permit it. Restrictions depend on local rules, posted advisories, and water-quality testing, so swimmers should heed signs and county guidance. Ice cover in winter makes conventional swimming unsafe, though some people practice cold-water or ice dipping with precautions; such activity carries significant risk and requires specialized preparation and rescue plans. Lifeguards and monitored beaches offer added safety when available.