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 22.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| JUN 3 | 18.7°C | 21.5°C | |
| JUN 4 | 18.9°C | 21.5°C | |
| JUN 5 | 18.9°C | 21.5°C | |
| JUN 6 | 19.0°C | 21.5°C | |
| JUN 7 | 19.2°C | 21.5°C | |
| JUN 8 | 21.9°C | 21.5°C | |
| JUN 10 | 22.2°C | 21.5°C | |
| JUN 11 | 21.5°C | 22.2°C | |
| JUN 12 | 21.5°C | 22.1°C | |
| JUN 13 | 21.5°C | 22.1°C | |
| JUN 14 | 21.5°C | 22.1°C | |
| JUN 15 | 21.5°C | 22.0°C | |
| JUN 16 | 21.5°C | 22.0°C | |
| JUN 17 | 21.5°C | 22.0°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 | 24°C | 28°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
June 9
June 10
June 11
June 12
June 13
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.