Farm Island Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Farm Island Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Farm Island Lake today is 17.5°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 | 20.0°C | 20.0°C | |
| SEP 15 | 19.2°C | 20.0°C | |
| SEP 16 | 19.4°C | 20.0°C | |
| SEP 17 | 18.6°C | 20.0°C | |
| SEP 18 | 18.3°C | 20.0°C | |
| SEP 19 | 18.2°C | 20.0°C | |
| SEP 20 | 18.2°C | 20.0°C | |
| SEP 22 | 20.0°C | 17.6°C | |
| SEP 23 | 20.0°C | 17.8°C | |
| SEP 24 | 20.0°C | 17.9°C | |
| SEP 25 | 20.0°C | 18.0°C | |
| SEP 26 | 20.0°C | 18.1°C | |
| SEP 27 | 20.0°C | 18.3°C | |
| SEP 28 | 20.0°C | 18.4°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 | 4°C |
| April | 1°C | 6°C | 10°C |
| May | 7°C | 13°C | 19°C |
| June | 14°C | 21°C | 27°C |
| July | 17°C | 23°C | 27°C |
| August | 19°C | 24°C | 28°C |
| September | 17°C | 20°C | 23°C |
| October | 6°C | 12°C | 18°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 3°C | 6°C |
Farm Island Lake: Water Temperature by Location
Farm Island Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Farm Island Lake, like many inland lakes in northern Minnesota, experiences a strong seasonal cycle in surface water temperature. In winter the lake is usually ice-covered and water temperatures hover near 32°F (0°C) under the ice. During spring thaw the surface warms from roughly 34–55°F (1–13°C) as runoff and sunshine increase. Peak summer surface temperatures commonly reach about 68–78°F (20–26°C), and on warm, calm July afternoons parts of the lake can briefly approach the low 80s°F (around 27–28°C). By fall the water cools again, typically falling into the 50–65°F range (10–18°C) as air temperatures decline.
Swimming is generally allowed at Farm Island Lake and is a common recreational use during the warmer months because it is a public freshwater body with accessible shoreline. That said, swimmers should observe posted signs, local rules and any advisories issued by health or park authorities; summer algal blooms or elevated bacterial readings can lead to temporary restrictions. Even when open for swimming, users should be mindful of temperature-related risks: water below about 70°F (21°C) can feel uncomfortably cool and increases cold-water shock or hypothermia risk, while warm, stagnant areas may harbor algae or reduced water quality. Respecting local guidance ensures safer enjoyment of the lake.