Pool 6 Mississippi Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Pool 6 Mississippi Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Pool 6 Mississippi Lake today is 19.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 14 | 19.7°C | 19.2°C | |
| SEP 15 | 19.7°C | 19.2°C | |
| SEP 16 | 19.3°C | 19.2°C | |
| SEP 17 | 18.9°C | 19.2°C | |
| SEP 18 | 19.0°C | 19.2°C | |
| SEP 19 | 19.3°C | 19.2°C | |
| SEP 20 | 19.0°C | 19.2°C | |
| SEP 21 | 19.1°C | 19.2°C | |
| SEP 22 | 19.2°C | 19.1°C | |
| SEP 23 | 19.2°C | 19.1°C | |
| SEP 24 | 19.2°C | 19.1°C | |
| SEP 25 | 19.2°C | 19.1°C | |
| SEP 26 | 19.2°C | 19.1°C | |
| SEP 27 | 19.2°C | 19.1°C | |
| SEP 28 | 19.2°C | 19.1°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 | 4°C | 7°C |
| April | 1°C | 8°C | 15°C |
| May | 10°C | 16°C | 23°C |
| June | 16°C | 20°C | 24°C |
| July | 23°C | 26°C | 29°C |
| August | 22°C | 26°C | 30°C |
| September | 14°C | 19°C | 25°C |
| October | 9°C | 14°C | 19°C |
| November | 2°C | 8°C | 13°C |
| December | 0°C | 0°C | 2°C |
Pool 6 Mississippi Lake: Water Temperature by Location
Pool 6 Mississippi Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Pool 6 of the Mississippi River in Wisconsin experiences a wide seasonal swing in water temperature because it is a river pool with variable depth, flow and exposure. In spring surface temperatures are typically in the range of about 40–60°F (4–16°C) as snowmelt and cool air dominate. Summer brings the warmest conditions, with many shallow bays and backwaters reaching roughly 68–80°F (20–27°C) on average and occasionally rising into the mid-80s°F (around 29°C) during heat waves. In fall water cools again to approximately 45–65°F (7–18°C). In winter the pool can approach freezing at the surface, often 32–40°F (0–4°C), and some areas may ice over depending on conditions. Localized currents, shading and depth cause important variations from these ranges.
Swimming in Pool 6 is possible in calmer backwater areas and at some public access points during the warm months, but it is not uniformly managed as a monitored beach. Many spots have no lifeguards and boat traffic, submerged hazards and strong currents near the main channel make some places unsafe. Water quality advisories, debris and occasional algal blooms can also limit safe swimming. For comfortable, lower-risk swimming most people choose the late June–August window when surface temperatures are warmest, and it is best to follow posted signs and local guidance before entering the water.