Little Lake Butte Des Morts — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Little Lake Butte Des Morts, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Little Lake Butte Des Morts today is 23.4°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 25 | 21.2°C | 24.0°C | |
| AUG 26 | 21.2°C | 24.0°C | |
| AUG 27 | 21.4°C | 24.0°C | |
| AUG 28 | 22.6°C | 24.0°C | |
| AUG 29 | 23.1°C | 24.0°C | |
| AUG 30 | 23.1°C | 24.0°C | |
| AUG 31 | 23.1°C | 24.0°C | |
| SEP 1 | 23.4°C | 15.5°C | |
| SEP 2 | 15.5°C | 23.0°C | |
| SEP 3 | 15.5°C | 22.6°C | |
| SEP 4 | 15.5°C | 22.2°C | |
| SEP 5 | 15.5°C | 21.8°C | |
| SEP 6 | 15.5°C | 21.4°C | |
| SEP 7 | 15.5°C | 21.0°C | |
| SEP 8 | 15.5°C | 20.6°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 | 4°C | 7°C |
| February | 0°C | 5°C | 8°C |
| March | 0°C | 3°C | 5°C |
| April | 2°C | 7°C | 12°C |
| May | 8°C | 16°C | 23°C |
| June | 17°C | 20°C | 23°C |
| July | 20°C | 24°C | 28°C |
| August | 21°C | 24°C | 27°C |
| September | 12°C | 16°C | 19°C |
| October | 13°C | 16°C | 19°C |
| November | 0°C | 5°C | 9°C |
| December | 0°C | 2°C | 5°C |
Little Lake Butte Des Morts: Water Temperature by Location
Little Lake Butte Des Morts: Weather Forecast
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September 6
Location & Local Information
Little Lake Butte Des Morts, part of the Fox River system in Wisconsin, experiences pronounced seasonal changes in surface water temperature. In winter the lake typically approaches freezing, around 32°F (0°C), with ice cover common on calmer areas. Spring sees a steady rise, commonly between about 40–60°F (4–15°C) as thaw and warming progress. Peak summer surface temperatures often range from roughly 70–85°F (21–29°C) on warm, sunny days, though localized conditions can push slightly higher. Autumn brings cooling back into the 45–65°F (7–18°C) range as air temperatures fall and stratification breaks down. Deeper water remains colder year-round, so measured temperatures vary with depth, wind, and inflows from the river.
Swimming is generally allowed in Little Lake Butte Des Morts at designated access points and public parks, but use is conditional on safety and water-quality considerations. Because the lake is connected to a river system there can be currents and boat traffic, and occasional advisories are issued for bacterial contamination or harmful algal blooms after heavy rains or warm calm periods. Recreational users should heed posted signs, avoid areas with visible algae scums, and recognize that water below about 60°F (15°C) can feel uncomfortably cold and increase risk of cold-water shock; lifeguard coverage is not guaranteed at all sites.