Tetonka Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Tetonka Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Tetonka Lake today is 21.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| JUN 2 | 17.0°C | 21.2°C | |
| JUN 3 | 15.4°C | 21.2°C | |
| JUN 4 | 15.4°C | 21.2°C | |
| JUN 5 | 15.9°C | 21.2°C | |
| JUN 6 | 16.2°C | 21.2°C | |
| JUN 7 | 20.0°C | 21.2°C | |
| JUN 8 | 20.3°C | 21.2°C | |
| JUN 10 | 21.2°C | 21.1°C | |
| JUN 11 | 21.2°C | 21.1°C | |
| JUN 12 | 21.2°C | 21.1°C | |
| JUN 13 | 21.2°C | 21.1°C | |
| JUN 14 | 21.2°C | 21.1°C | |
| JUN 15 | 21.2°C | 21.1°C | |
| JUN 16 | 21.2°C | 21.1°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 9°C |
| April | 3°C | 9°C | 16°C |
| May | 10°C | 15°C | 21°C |
| June | 15°C | 21°C | 27°C |
| July | 22°C | 24°C | 27°C |
| August | 21°C | 25°C | 28°C |
| September | 18°C | 21°C | 23°C |
| October | 6°C | 13°C | 20°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 4°C | 8°C |
Tetonka Lake: Water Temperature by Location
Tetonka Lake: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Lake Tetonka in Minnesota typically follows the seasonal temperature pattern common to shallow midwestern lakes. In spring the surface often warms from the low 40s to mid-60s°F (4–18°C) as ice melts and air temperatures rise. By summer the top layer usually reaches the upper 60s to high 70s°F (20–26°C) and can climb into the low 80s°F (27–28°C) during hot spells; deeper water remains cooler, often around 39°F (4°C) near the bottom when stratified. Autumn brings a steady cooling back through the 50s to 60s°F (10–16°C) before freeze-up, and winter conditions under ice hold temperatures close to 32–40°F (0–4°C). Actual readings depend on recent weather, wind, lake depth and inflows, so local conditions can vary from these typical ranges.
Swimming in and around Lake Tetonka is generally permitted during the open-water season at public access points and private shoreline areas where owners allow it, but safety and water-quality considerations determine whether it is advisable. Beaches can be subject to advisories for harmful algal blooms, bacteria, or other hazards, and there may be no lifeguards at many sites. Cold-water shock is a real risk in spring and late-fall when surface temperatures are low. For safe recreation, check current local health advisories, posted rules at access points, and exercise usual lake safety precautions.