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 48°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used. 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 |
|---|---|---|---|
| MAY 6 | 47°F | 56°F | |
| MAY 7 | 47°F | 56°F | |
| MAY 8 | 46°F | 56°F | |
| MAY 9 | 46°F | 56°F | |
| MAY 10 | 48°F | 56°F | |
| MAY 11 | 48°F | 56°F | |
| MAY 12 | 48°F | 56°F | |
| MAY 13 | 48°F | 56°F | |
| MAY 14 | 56°F | 48°F | |
| MAY 15 | 56°F | 49°F | |
| MAY 16 | 56°F | 49°F | |
| MAY 17 | 56°F | 50°F | |
| MAY 18 | 56°F | 50°F | |
| MAY 19 | 56°F | 50°F | |
| MAY 20 | 56°F | 51°F |
* 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 | 32°F | 34°F | 39°F |
| February | 32°F | 35°F | 39°F |
| March | 32°F | 35°F | 39°F |
| April | 34°F | 42°F | 50°F |
| May | 45°F | 56°F | 66°F |
| June | 57°F | 69°F | 81°F |
| July | 68°F | 74°F | 81°F |
| August | 70°F | 76°F | 82°F |
| September | 63°F | 68°F | 73°F |
| October | 43°F | 54°F | 64°F |
| November | 37°F | 45°F | 52°F |
| December | 34°F | 38°F | 43°F |
Farm Island Lake: Water Temperature by Location
Farm Island Lake: Weather Forecast
May 14
May 15
May 16
May 17
May 18
May 19
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.