Forest Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Forest Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Forest Lake today is 24.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 |
|---|---|---|---|
| AUG 4 | 28.9°C | 24.6°C | |
| AUG 5 | 28.8°C | 24.6°C | |
| AUG 6 | 28.8°C | 24.6°C | |
| AUG 7 | 28.5°C | 24.6°C | |
| AUG 8 | 27.5°C | 24.6°C | |
| AUG 9 | 27.5°C | 24.6°C | |
| AUG 10 | 24.8°C | 24.6°C | |
| AUG 11 | 24.9°C | 24.6°C | |
| AUG 12 | 24.6°C | 24.9°C | |
| AUG 13 | 24.6°C | 24.9°C | |
| AUG 14 | 24.6°C | 24.9°C | |
| AUG 15 | 24.6°C | 24.8°C | |
| AUG 16 | 24.6°C | 24.8°C | |
| AUG 17 | 24.6°C | 24.8°C | |
| AUG 18 | 24.6°C | 24.8°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 | 2°C | 4°C |
| March | 0°C | 2°C | 5°C |
| April | 4°C | 8°C | 13°C |
| May | 9°C | 15°C | 21°C |
| June | 16°C | 22°C | 27°C |
| July | 21°C | 24°C | 27°C |
| August | 20°C | 25°C | 30°C |
| September | 18°C | 21°C | 23°C |
| October | 6°C | 13°C | 19°C |
| November | 2°C | 8°C | 12°C |
| December | 1°C | 3°C | 6°C |
Forest Lake: Water Temperature by Location
Forest Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Forest Lake, a mesotrophic lake in Minnesota, follows the typical seasonal heating and cooling pattern of Upper Midwest lakes. During winter, water beneath the ice generally sits just above freezing, roughly 33–39°F (1–4°C). In spring the surface warms from about 40–60°F (4–16°C) as ice-out and turnover occur. By summer, surface temperatures often reach the most comfortable swimming range, roughly 70–80°F (21–27°C), with shallow bays occasionally climbing into the low 80s (∼27–28°C) on hot, calm days. In autumn the lake cools again, with surface readings commonly falling to 50–65°F (10–18°C) before ice forms.
Swimming is permitted at designated public beaches and from private shorelines when conditions are safe; municipal beach areas typically operate in summer and may have lifeguards during peak hours. Local authorities and health departments monitor water quality for bacteria and harmful algal blooms and will post advisories or closures if necessary, so swimmers should check current notices before entering the water. Apart from water temperature, safety considerations include weather, wind and underwater hazards; colder spring or autumn waters can present hypothermia risks even when air temperatures feel mild.