Ike Walton Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Ike Walton Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Ike Walton Lake today is 21.4°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 | 17.8°C | 16.7°C | |
| JUN 24 | 17.8°C | 16.7°C | |
| JUN 25 | 17.9°C | 16.7°C | |
| JUN 26 | 18.1°C | 16.7°C | |
| JUN 27 | 18.4°C | 16.7°C | |
| JUN 28 | 18.9°C | 16.7°C | |
| JUN 29 | 20.4°C | 16.7°C | |
| JUN 30 | 20.7°C | 16.7°C | |
| JUL 1 | 22.5°C | 21.5°C | |
| JUL 2 | 22.5°C | 21.5°C | |
| JUL 3 | 22.5°C | 21.6°C | |
| JUL 4 | 22.5°C | 21.6°C | |
| JUL 5 | 22.5°C | 21.7°C | |
| JUL 6 | 22.5°C | 21.7°C | |
| JUL 7 | 22.5°C | 21.8°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 | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 1°C | 6°C | 11°C |
| May | 6°C | 12°C | 19°C |
| June | 12°C | 17°C | 22°C |
| July | 18°C | 23°C | 27°C |
| August | 18°C | 24°C | 30°C |
| September | 14°C | 16°C | 19°C |
| October | 9°C | 13°C | 17°C |
| November | 4°C | 9°C | 13°C |
| December | 0°C | 3°C | 5°C |
Ike Walton Lake: Water Temperature by Location
Ike Walton Lake: Weather Forecast
July 1
July 2
July 3
July 4
July 5
July 6
Location & Local Information
Ike Walton Lake in Wisconsin follows the typical seasonal pattern of northern midwestern lakes. In winter the surface usually hovers around freezing, close to 32°F (0°C) beneath ice cover. Spring brings a steady rise, with surface temperatures often between roughly 35–55°F (2–13°C) as the lake stratifies. Peak summer conditions commonly produce the warmest surface water, often ranging from about 65–80°F (18–27°C) in July and August on shallower bays, though deeper or shaded areas remain cooler. In early fall the lake cools again to roughly 50–65°F (10–18°C) as turnover begins, before refreezing later in the season. Local weather, depth, and wind exposure can shift these ranges year to year.
Swimming opportunities at Ike Walton Lake depend on access points, shoreline development, and seasonal conditions; where designated public beaches or private shorelines allow, swimming is generally permitted. Water is most comfortable for casual swimming in summer when surface temperatures reach the mid-60s to upper-70s °F (around 18–26°C). Caution is advised during spring and fall when colder water can increase risk of cold-water shock, and in winter when ice must be of sufficient thickness for any activity. As with any lake, water quality, aquatic vegetation, and posted advisories should be checked before entering the water.