Morrison Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Morrison Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Morrison Lake today is 19.3°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 | 20.7°C | 23.0°C | |
| SEP 15 | 21.1°C | 23.0°C | |
| SEP 16 | 20.1°C | 23.0°C | |
| SEP 17 | 20.0°C | 23.0°C | |
| SEP 18 | 19.9°C | 23.0°C | |
| SEP 19 | 19.6°C | 23.0°C | |
| SEP 20 | 19.8°C | 23.0°C | |
| SEP 21 | 19.3°C | 23.0°C | |
| SEP 22 | 23.0°C | 19.5°C | |
| SEP 23 | 23.0°C | 19.7°C | |
| SEP 24 | 23.0°C | 19.9°C | |
| SEP 25 | 23.0°C | 20.0°C | |
| SEP 26 | 23.0°C | 20.2°C | |
| SEP 27 | 23.0°C | 20.4°C | |
| SEP 28 | 23.0°C | 20.6°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 | 3°C | 6°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 4°C | 8°C |
| April | 3°C | 9°C | 15°C |
| May | 11°C | 15°C | 18°C |
| June | 17°C | 21°C | 24°C |
| July | 22°C | 25°C | 27°C |
| August | 22°C | 25°C | 28°C |
| September | 19°C | 23°C | 27°C |
| October | 14°C | 17°C | 19°C |
| November | 6°C | 10°C | 13°C |
| December | 2°C | 5°C | 8°C |
Morrison Lake: Water Temperature by Location
Morrison Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Morrison Lake in Michigan typically follows the seasonal temperature patterns of inland freshwater lakes in the region. Surface water in spring often ranges from about 40–60°F (4–16°C) as the lake thaws and warms; by midsummer surface temperatures commonly reach roughly 65–80°F (18–27°C), which is when the water feels most comfortable for swimming. In autumn the surface cools back toward 45–65°F (7–18°C), and in winter the lake will approach freezing at 32°F (0°C) and frequently ice over, with deeper water remaining considerably colder year-round. Thermal stratification in summer can keep deeper layers much cooler than surface readings, so temperature varies with depth, weather and shading.
Swimming at Morrison Lake is generally possible and commonly practiced during the warmer months, primarily because surface temperatures in July and August reach the comfortable range for recreational bathing. Whether swimming is permitted at a particular access point depends on land ownership, posted rules and current health advisories; for safety reasons people should avoid entering the water when ice is present and heed warnings about strong currents, underwater hazards or harmful algal blooms. Because conditions change rapidly, checking local signage or municipal guidance on water quality and life‑safety provisions is recommended before swimming.