Bone Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Bone Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Bone Lake today is 18.4°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 | 20.5°C | 21.1°C | |
| SEP 15 | 20.1°C | 21.1°C | |
| SEP 16 | 19.3°C | 21.1°C | |
| SEP 17 | 19.1°C | 21.1°C | |
| SEP 18 | 18.5°C | 21.1°C | |
| SEP 19 | 18.7°C | 21.1°C | |
| SEP 20 | 18.6°C | 21.1°C | |
| SEP 22 | 21.1°C | 18.5°C | |
| SEP 23 | 21.1°C | 18.7°C | |
| SEP 24 | 21.1°C | 18.8°C | |
| SEP 25 | 21.1°C | 18.9°C | |
| SEP 26 | 21.1°C | 19.1°C | |
| SEP 27 | 21.1°C | 19.2°C | |
| SEP 28 | 21.1°C | 19.3°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 | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 2°C | 4°C |
| April | 2°C | 7°C | 11°C |
| May | 9°C | 15°C | 20°C |
| June | 16°C | 22°C | 27°C |
| July | 21°C | 24°C | 27°C |
| August | 20°C | 24°C | 29°C |
| September | 18°C | 21°C | 25°C |
| October | 6°C | 13°C | 19°C |
| November | 2°C | 7°C | 12°C |
| December | 1°C | 3°C | 6°C |
Bone Lake: Water Temperature by Location
Bone Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Bone Lake in Wisconsin typically follows the seasonal pattern of small temperate lakes. In spring the surface generally ranges from about 40–60°F (4–15°C) as snowmelt and cool rains keep temperatures low. By early summer surface waters often warm into the 60–70°F range (15–21°C), with midsummer highs commonly between 70–80°F (21–27°C) on warm years; in hot spells local shallow bays can approach the mid-80s°F (around 29°C). As air temperatures cool in late summer and autumn, surface readings usually fall back into the 50s–60s°F (10–20°C). In winter the lake is typically at or just above freezing at the surface when ice is present (around 32°F / 0°C) and liquid water below the ice often sits close to 32–38°F (0–3°C). Actual temperatures will vary with depth, wind, recent weather, and year-to-year climate variations.
Swimming in Bone Lake is generally allowed and is a common recreational activity during the warmer months because it is a natural lake used for boating and shore access. Whether you should swim at a given time depends on water temperature, clarity, local water-quality advisories, and posted rules at public accesses or private properties. Cooler spring and fall temperatures may be uncomfortable and increase risk of cold-water shock; in winter the lake is not safe for swimming under ice. For safety, check current conditions and any local advisories before entering the water.