Cedar Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Cedar Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Cedar Lake today is 19°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 | 21.5°C | 21.3°C | |
| SEP 15 | 21.1°C | 21.3°C | |
| SEP 16 | 20.3°C | 21.3°C | |
| SEP 17 | 19.9°C | 21.3°C | |
| SEP 18 | 19.3°C | 21.3°C | |
| SEP 19 | 19.6°C | 21.3°C | |
| SEP 20 | 19.6°C | 21.3°C | |
| SEP 21 | 19.0°C | 21.3°C | |
| SEP 22 | 21.3°C | 19.1°C | |
| SEP 23 | 21.3°C | 19.2°C | |
| SEP 24 | 21.3°C | 19.3°C | |
| SEP 25 | 21.3°C | 19.5°C | |
| SEP 26 | 21.3°C | 19.6°C | |
| SEP 27 | 21.3°C | 19.7°C | |
| SEP 28 | 21.3°C | 19.8°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 | 1°C | 4°C |
| February | 0°C | 3°C | 5°C |
| March | 0°C | 2°C | 4°C |
| April | 3°C | 9°C | 14°C |
| May | 10°C | 16°C | 21°C |
| June | 15°C | 21°C | 27°C |
| July | 21°C | 25°C | 28°C |
| August | 20°C | 25°C | 30°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 |
Cedar Lake: Water Temperature by Location
Cedar Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Cedar Lake (8) in Wisconsin generally follows the seasonal temperature patterns typical of midwestern kettle and glacial lakes. In spring the surface water commonly ranges from about 35–60°F (2–16°C) as the lake mixes and warms; by early summer surface temperatures climb to roughly 60–70°F (16–21°C). Peak midsummer conditions often bring surface readings into the mid-60s to upper-70s°F (18–26°C), while early fall sees a cooling back toward 50–65°F (10–18°C). In winter the lake can sit at near-freezing temperatures, roughly 32–39°F (0–4°C), and often forms lake ice in cold spells.
Swimming is generally permitted at Wisconsin lakes such as Cedar Lake (8) during the warmer months when surface temperatures are comfortable for recreation, but whether swimming is advisable depends on local conditions. Summer warmth typically makes swimming pleasant when water is in the mid-60s to upper-70s°F (18–26°C), yet periodic issues like elevated bacterial counts or blue‑green algae blooms can prompt temporary advisories or closures. Users should follow posted signs at public access points and heed any local health advisories before entering the water.