Chequamegon Waters Flowage Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Chequamegon Waters Flowage Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Chequamegon Waters Flowage Lake today is 21.8°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 | 19.0°C | 18.1°C | |
| JUN 24 | 19.2°C | 18.1°C | |
| JUN 25 | 18.4°C | 18.1°C | |
| JUN 26 | 18.7°C | 18.1°C | |
| JUN 27 | 19.0°C | 18.1°C | |
| JUN 28 | 19.9°C | 18.1°C | |
| JUN 29 | 20.6°C | 18.1°C | |
| JUN 30 | 21.1°C | 18.1°C | |
| JUL 1 | 23.0°C | 21.9°C | |
| JUL 2 | 23.0°C | 21.9°C | |
| JUL 3 | 23.0°C | 22.0°C | |
| JUL 4 | 23.0°C | 22.0°C | |
| JUL 5 | 23.0°C | 22.1°C | |
| JUL 6 | 23.0°C | 22.2°C | |
| JUL 7 | 23.0°C | 22.2°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 | 0°C | 3°C | 6°C |
| April | 1°C | 6°C | 12°C |
| May | 8°C | 14°C | 21°C |
| June | 15°C | 18°C | 22°C |
| July | 19°C | 23°C | 27°C |
| August | 18°C | 24°C | 30°C |
| September | 14°C | 16°C | 19°C |
| October | 9°C | 14°C | 18°C |
| November | 3°C | 8°C | 13°C |
| December | 0°C | 2°C | 5°C |
Chequamegon Waters Flowage Lake: Water Temperature by Location
Chequamegon Waters Flowage Lake: Weather Forecast
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Location & Local Information
Chequamegon Waters Flowage typically shows strong seasonal variation in surface water temperature. After ice-out in spring, surface readings often sit between about 40–60°F (4–15°C) as the lake slowly warms. By early to mid-summer surface temperatures commonly range from roughly 68–78°F (20–26°C) in shallow, sunlit bays; deeper or shaded areas may remain cooler. In late summer and early fall temperatures usually fall back into the 50–65°F (10–18°C) range as air temperatures decline, and in winter the lake is at or just above freezing under ice, roughly 32–35°F (0–2°C) at the surface.
Swimming in the flowage is generally possible and is a common recreational activity, but it is largely informal and seasonal. There are few staffed beaches, so swimmers should be aware of hazards such as cold pockets, sudden drop-offs, submerged vegetation and logs, variable currents near dam structures, and occasional water-quality advisories including harmful algal blooms in warm weather. Because much of the impoundment can remain cooler than expected even in summer, users should take standard precautions against cold-water shock and hypothermia, and check local advisories before entering the water.