Mallard Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Mallard Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Mallard Lake today is 30.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. 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 |
|---|---|---|---|
| JUL 14 | 24.4°C | 26.8°C | |
| JUL 15 | 26.6°C | 26.8°C | |
| JUL 16 | 26.7°C | 26.8°C | |
| JUL 17 | 26.7°C | 26.8°C | |
| JUL 18 | 26.7°C | 26.8°C | |
| JUL 19 | 26.8°C | 26.8°C | |
| JUL 20 | 26.6°C | 26.8°C | |
| JUL 21 | 29.6°C | 26.8°C | |
| JUL 22 | 26.8°C | 30.3°C | |
| JUL 23 | 26.8°C | 30.1°C | |
| JUL 24 | 26.8°C | 29.9°C | |
| JUL 25 | 26.8°C | 29.8°C | |
| JUL 26 | 26.8°C | 29.6°C | |
| JUL 27 | 26.8°C | 29.4°C | |
| JUL 28 | 26.8°C | 29.2°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 | 1°C | 3°C | 6°C |
| February | 1°C | 6°C | 10°C |
| March | 3°C | 8°C | 13°C |
| April | 7°C | 12°C | 17°C |
| May | 13°C | 17°C | 21°C |
| June | 19°C | 22°C | 25°C |
| July | 23°C | 27°C | 31°C |
| August | 24°C | 26°C | 29°C |
| September | 20°C | 23°C | 26°C |
| October | 15°C | 19°C | 22°C |
| November | 4°C | 10°C | 14°C |
| December | 0°C | 3°C | 5°C |
Mallard Lake: Water Temperature by Location
Mallard Lake: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Mallard Lake in northeastern Illinois follows the seasonal temperature patterns typical of shallow to moderately deep inland lakes in that region. In winter the surface hovers around freezing, about 32°F (0°C), and often forms ice. During spring temperatures generally rise from roughly 40–60°F (4–16°C) as snowmelt and runoff cool the water. By summer the lake commonly warms to the mid-60s to upper 70s °F, roughly 18–26°C, with warm spells sometimes pushing local surface readings into the low 80s °F (around 27–28°C) on calm, sunny days. In autumn the water cools back to the 50–65°F range (10–18°C). These ranges vary with depth, recent weather, and water clarity, so local measurements can differ from general expectations.
Swimming opportunities at Mallard Lake are limited because there are no designated public swimming beaches or lifeguarded areas; many similar forest preserve and small-lake sites discourage or prohibit open swimming for safety and management reasons. Concerns include lack of lifeguards, potential boat traffic, variable water quality and visibility, and underwater hazards. While some visitors may wade or enter the water at their own risk during warm months, official recreational swimming is not a primary managed use of the lake, and anyone considering entering the water should check current local rules and conditions.