Evergreen Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Evergreen Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Evergreen Lake today is 20.3°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 23 | 19.1°C | 17.5°C | |
| JUN 24 | 18.9°C | 17.5°C | |
| JUN 25 | 18.9°C | 17.5°C | |
| JUN 26 | 18.7°C | 17.5°C | |
| JUN 27 | 19.0°C | 17.5°C | |
| JUN 28 | 19.0°C | 17.5°C | |
| JUN 29 | 19.9°C | 17.5°C | |
| JUN 30 | 19.9°C | 17.5°C | |
| JUL 1 | 24.5°C | 20.5°C | |
| JUL 2 | 24.5°C | 20.7°C | |
| JUL 3 | 24.5°C | 20.9°C | |
| JUL 4 | 24.5°C | 21.1°C | |
| JUL 5 | 24.5°C | 21.4°C | |
| JUL 6 | 24.5°C | 21.6°C | |
| JUL 7 | 24.5°C | 21.8°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 | 4°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 8°C |
| April | 2°C | 8°C | 14°C |
| May | 8°C | 13°C | 18°C |
| June | 14°C | 18°C | 21°C |
| July | 20°C | 25°C | 29°C |
| August | 20°C | 24°C | 27°C |
| September | 17°C | 20°C | 22°C |
| October | 13°C | 16°C | 19°C |
| November | 3°C | 9°C | 15°C |
| December | 0°C | 3°C | 5°C |
Evergreen Lake: Water Temperature by Location
Evergreen Lake: Weather Forecast
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July 4
July 5
July 6
Location & Local Information
Evergreen Lake in Wisconsin follows the typical seasonal cycle of small northern lakes. In spring the surface water often runs cool as the lake stratifies, commonly about 40–55°F (4–13°C). By early summer temperatures climb into the mid-60s to upper-70s Fahrenheit, roughly 18–26°C, and on warm spells the shallow nearshore water can reach the upper 70s to low 80s°F (25–28°C). Late summer and early fall usually see surface readings in the 60s to low 70s°F (15–23°C) as cooling begins. In winter the lake commonly freezes over and open-water temperatures fall toward freezing, about 32–39°F (0–4°C) under ice cover, with the deepest water remaining slightly warmer.
Swimming at Evergreen Lake is generally allowed from public access points and beaches when local rules permit and no health or safety advisories are in effect. Many people swim in summer when surface temperatures are most comfortable, but swimmers should be mindful of cold-water shock and hypothermia if conditions are cooler or winds chill the surface. Local authorities may close swimming areas for harmful algal blooms, high bacterial counts, or ice safety concerns, so it’s advisable to follow posted notices and county health guidance before entering the water.