Upper Cormorant Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Upper Cormorant Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Upper Cormorant Lake today is 17.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 18.9°C | 20.4°C | |
| SEP 15 | 17.8°C | 20.4°C | |
| SEP 16 | 17.9°C | 20.4°C | |
| SEP 17 | 18.1°C | 20.4°C | |
| SEP 18 | 16.9°C | 20.4°C | |
| SEP 19 | 17.1°C | 20.4°C | |
| SEP 20 | 16.2°C | 20.4°C | |
| SEP 21 | 17.2°C | 20.4°C | |
| SEP 22 | 20.4°C | 17.4°C | |
| SEP 23 | 20.4°C | 17.5°C | |
| SEP 24 | 20.4°C | 17.7°C | |
| SEP 25 | 20.4°C | 17.8°C | |
| SEP 26 | 20.4°C | 18.0°C | |
| SEP 27 | 20.4°C | 18.2°C | |
| SEP 28 | 20.4°C | 18.3°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 | 2°C | 7°C | 12°C |
| February | 2°C | 9°C | 15°C |
| March | 1°C | 9°C | 17°C |
| April | 2°C | 11°C | 20°C |
| May | 5°C | 14°C | 21°C |
| June | 14°C | 18°C | 23°C |
| July | 17°C | 22°C | 27°C |
| August | 21°C | 25°C | 28°C |
| September | 17°C | 20°C | 24°C |
| October | 5°C | 12°C | 18°C |
| November | 4°C | 8°C | 11°C |
| December | 2°C | 7°C | 11°C |
Upper Cormorant Lake: Water Temperature by Location
Upper Cormorant Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Upper Cormorant Lake in Minnesota experiences a wide seasonal swing in surface temperatures because of the region’s continental climate and the lake’s depth and exposure. In spring, surface water commonly runs about 40–60°F (4–16°C) as the lake thaws and warms slowly. Summer brings the warmest conditions, with typical surface temperatures around 68–78°F (20–26°C), and in shallow, sun-exposed areas occasionally reaching near 80°F (27°C). By fall the lake cools back toward 45–60°F (7–16°C) as stratification breaks down. In winter the lake is usually at or below freezing at the surface when ice forms, with water around 32°F (0°C) or a few degrees colder just under the ice (roughly 28–33°F / −2 to 1°C). Actual temperatures vary year to year with air temperature, wind, and recent precipitation.
Swimming in Upper Cormorant Lake is generally possible during the warmer months when surface temperatures are comfortable, but use is subject to local rules, posted advisories, and water-quality conditions. Summer temperatures in the high 60s to mid 70s °F (about 20–24°C) are most inviting for swimmers; water below about 60°F (16°C) feels brisk and increases the risk of cold-water stress. Algal blooms, bacterial advisories, boat traffic, and sudden drop-offs can affect safety, so check local health or park notices, heed signage, and follow standard precautions such as supervising children and wearing life jackets where appropriate.