Wisconsin Rapids Flowage Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Wisconsin Rapids Flowage Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Wisconsin Rapids Flowage Lake today is 25.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 |
|---|---|---|---|
| AUG 4 | 26.5°C | 24.5°C | |
| AUG 5 | 26.5°C | 24.5°C | |
| AUG 6 | 26.5°C | 24.5°C | |
| AUG 7 | 26.5°C | 24.5°C | |
| AUG 8 | 26.7°C | 24.5°C | |
| AUG 9 | 26.7°C | 24.5°C | |
| AUG 10 | 25.3°C | 24.5°C | |
| AUG 11 | 25.3°C | 24.5°C | |
| AUG 12 | 24.5°C | 25.3°C | |
| AUG 13 | 24.5°C | 25.2°C | |
| AUG 14 | 24.5°C | 25.2°C | |
| AUG 15 | 24.5°C | 25.1°C | |
| AUG 16 | 24.5°C | 25.1°C | |
| AUG 17 | 24.5°C | 25.1°C | |
| AUG 18 | 24.5°C | 25.0°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 | 1°C | 3°C |
| February | 0°C | 1°C | 3°C |
| March | 0°C | 1°C | 3°C |
| April | 1°C | 8°C | 16°C |
| May | 6°C | 13°C | 21°C |
| June | 16°C | 19°C | 23°C |
| July | 19°C | 24°C | 29°C |
| August | 19°C | 25°C | 30°C |
| September | 14°C | 16°C | 19°C |
| October | 9°C | 14°C | 18°C |
| November | 3°C | 9°C | 14°C |
| December | 0°C | 2°C | 4°C |
Wisconsin Rapids Flowage Lake: Water Temperature by Location
Wisconsin Rapids Flowage Lake: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
The flowage near Wisconsin Rapids, part of the Wisconsin River system, experiences pronounced seasonal shifts in water temperature typical of central Wisconsin inland waters. In spring, surface temperatures commonly range from about 40–60°F (4–16°C) as snowmelt and cooler air persist. By early to midsummer the surface usually warms to roughly 65–80°F (18–27°C), with the warmest stretches often occurring in July and August; deeper water remains noticeably cooler, sometimes 10–15°F (6–8°C) lower, due to stratification. In fall the surface cools back toward 50–65°F (10–18°C) before winter ice forms and surface temperatures approach freezing around 32°F (0°C), with under-ice layers generally near 32–39°F (0–4°C).
Swimming is generally allowed at public access points and designated recreation areas on the flowage because it is a managed public waterbody used for boating, fishing and leisure. However, conditions vary by location and time of year: boat traffic, currents near dam structures, sudden depth changes, and occasional algal blooms can create hazards or local advisories. There are often no lifeguards at informal sites, so swimmers should heed posted signs, check current water-quality notices from local authorities, and use caution with cold water or hypothermia risk during shoulder seasons.