Senachwine Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Senachwine Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Senachwine Lake today is 16.5°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 |
|---|---|---|---|
| OCT 5 | 19.1°C | 17.5°C | |
| OCT 6 | 19.1°C | 17.5°C | |
| OCT 7 | 18.5°C | 17.5°C | |
| OCT 8 | 17.7°C | 17.5°C | |
| OCT 9 | 17.4°C | 17.5°C | |
| OCT 10 | 17.1°C | 17.5°C | |
| OCT 11 | 17.0°C | 17.5°C | |
| OCT 12 | 17.2°C | 17.5°C | |
| OCT 13 | 17.5°C | 16.6°C | |
| OCT 14 | 17.5°C | 16.6°C | |
| OCT 15 | 17.5°C | 16.7°C | |
| OCT 16 | 17.5°C | 16.7°C | |
| OCT 17 | 17.5°C | 16.8°C | |
| OCT 18 | 17.5°C | 16.8°C | |
| OCT 19 | 17.5°C | 16.9°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 5°C | 11°C |
| April | 6°C | 12°C | 18°C |
| May | 14°C | 19°C | 24°C |
| June | 18°C | 22°C | 25°C |
| July | 22°C | 26°C | 31°C |
| August | 23°C | 27°C | 30°C |
| September | 17°C | 22°C | 27°C |
| October | 13°C | 18°C | 22°C |
| November | 3°C | 8°C | 13°C |
| December | 2°C | 5°C | 8°C |
Senachwine Lake: Water Temperature by Location
Senachwine Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Senachwine Lake, a shallow Illinois River backwater in central Illinois, tends to follow seasonal patterns typical of Midwestern backwater lakes. In spring (roughly March–May) surface temperatures commonly range from about 40–65°F (4–18°C) as the water warms after ice melt. By summer (June–August) the lake often reaches its warmest, with surface readings frequently between 70–85°F (21–29°C) in warm spells, though shallower bays can heat even higher on hot, calm days. During fall (September–November) temperatures fall back toward 50–70°F (10–21°C) as air cools, and in winter the lake can approach freezing, with surface temperatures around 32–40°F (0–4°C) and occasional ice cover in cold stretches.
Swimming at Senachwine Lake is possible but not formally developed; there are few if any designated sandy beaches, lifeguards, or municipal swim facilities, so recreational swimming is generally at one’s own risk. Factors that influence whether people choose to swim include shallow, muddy bottoms, abundant aquatic vegetation, boat traffic in some areas, and occasional water-quality issues such as algal blooms that can prompt temporary advisories. Visitors are advised to check postings by local managers or the state wildlife area for current conditions and any restrictions before entering the water.