Muskego Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Muskego Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Muskego Lake today is 18°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 20 | 18.6°C | 17.6°C | |
| SEP 21 | 18.8°C | 17.6°C | |
| SEP 22 | 18.7°C | 17.6°C | |
| SEP 23 | 18.7°C | 17.6°C | |
| SEP 24 | 18.2°C | 17.6°C | |
| SEP 25 | 18.0°C | 17.6°C | |
| SEP 26 | 17.9°C | 17.6°C | |
| SEP 27 | 18.0°C | 17.6°C | |
| SEP 28 | 17.6°C | 17.9°C | |
| SEP 29 | 17.6°C | 17.9°C | |
| SEP 30 | 17.6°C | 17.8°C | |
| OCT 1 | 16.5°C | 17.7°C | |
| OCT 2 | 16.5°C | 17.6°C | |
| OCT 3 | 16.5°C | 17.6°C | |
| OCT 4 | 16.5°C | 17.5°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 | 5°C | 7°C |
| February | 2°C | 5°C | 8°C |
| March | 0°C | 4°C | 9°C |
| April | 4°C | 9°C | 14°C |
| May | 11°C | 17°C | 23°C |
| June | 12°C | 17°C | 23°C |
| July | 20°C | 25°C | 30°C |
| August | 18°C | 23°C | 27°C |
| September | 12°C | 18°C | 24°C |
| October | 13°C | 17°C | 20°C |
| November | 0°C | 6°C | 11°C |
| December | 3°C | 3°C | 8°C |
Muskego Lake: Water Temperature by Location
Muskego Lake: Weather Forecast
September 27
September 28
September 29
September 30
October 1
Location & Local Information
Muskego Lake in southeastern Wisconsin experiences pronounced seasonal shifts in water temperature. In spring the lake is cool, often ranging from the low 40s to the upper 60s °F (about 5–20 °C) as it stratifies. Peak summer surface temperatures in July and August commonly reach the mid-70s to low 80s °F (24–28 °C), and shallow bays can warm a bit higher on hot, calm days. By early fall temperatures usually fall back into the 50s and 60s °F (10–20 °C) as the surface cools and mixing increases. In winter the surface approaches freezing, around 32 °F (0 °C), and the lake frequently freezes over enough for ice cover.
Swimming at Muskego Lake is generally permitted and popular at public access points and private shorelines because the lake is used for recreation and provides designated beach and launch areas. However, swimming is typically recommended only in marked or supervised areas because boating, submerged vegetation, and occasional water-quality issues such as elevated bacteria counts or cyanobacterial (blue-green algae) blooms can create hazards or lead to temporary advisories. Local parks departments post current advisories and conditions, so checking those before entering the water is advisable.