Upper Gull Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Upper Gull Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Upper Gull Lake today is 16.3°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 | 19.9°C | 19.7°C | |
| SEP 15 | 19.4°C | 19.7°C | |
| SEP 16 | 18.5°C | 19.7°C | |
| SEP 17 | 17.3°C | 19.7°C | |
| SEP 18 | 16.9°C | 19.7°C | |
| SEP 19 | 17.4°C | 19.7°C | |
| SEP 20 | 17.4°C | 19.7°C | |
| SEP 22 | 19.7°C | 16.5°C | |
| SEP 23 | 19.7°C | 16.6°C | |
| SEP 24 | 19.7°C | 16.8°C | |
| SEP 25 | 19.7°C | 17.0°C | |
| SEP 26 | 19.7°C | 17.2°C | |
| SEP 27 | 19.7°C | 17.3°C | |
| SEP 28 | 19.7°C | 17.5°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 | 6°C | 12°C |
| February | 2°C | 9°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 1°C | 11°C | 20°C |
| May | 6°C | 14°C | 21°C |
| June | 12°C | 17°C | 22°C |
| July | 17°C | 21°C | 26°C |
| August | 21°C | 25°C | 28°C |
| September | 17°C | 20°C | 23°C |
| October | 5°C | 12°C | 18°C |
| November | 4°C | 8°C | 11°C |
| December | 2°C | 7°C | 11°C |
Upper Gull Lake: Water Temperature by Location
Upper Gull Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Upper Gull Lake’s surface water temperatures follow the typical seasonal pattern of central Minnesota lakes. After ice-out in spring, temperatures commonly rise from roughly 40–60°F (4–16°C) through May and June as the sun warms shallow bays. Peak summer surface temperatures in July and August often reach about 68–78°F (20–26°C) in open, sheltered areas, while deeper water remains cooler and may form a thermocline. By early fall the surface usually cools back into the 50–68°F (10–20°C) range, and in winter the lake settles near freezing beneath the ice at about 32–39°F (0–4°C).
Swimming is generally possible and commonly practiced during the warmer months when surface temperatures are most comfortable; many people swim from public accesses, beaches, and private shorelines. Local authorities or lake associations may monitor water quality and post advisories if bacteria levels or harmful algal blooms are detected, so checking signs and reports before entering the water is recommended. Cold or icy conditions make swimming unsafe outside summer, and sudden drops in temperature near deeper areas can increase hypothermia risk, so swimmers typically choose calm, warm-weather days and stay attentive to posted guidance.