Lake Springfield — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Springfield, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Springfield today is 23.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 | 23.1°C | 25.0°C | |
| SEP 15 | 23.0°C | 25.0°C | |
| SEP 16 | 22.1°C | 25.0°C | |
| SEP 17 | 22.7°C | 25.0°C | |
| SEP 18 | 22.2°C | 25.0°C | |
| SEP 19 | 22.7°C | 25.0°C | |
| SEP 20 | 22.5°C | 25.0°C | |
| SEP 22 | 25.0°C | 23.2°C | |
| SEP 23 | 25.0°C | 23.3°C | |
| SEP 24 | 25.0°C | 23.4°C | |
| SEP 25 | 25.0°C | 23.5°C | |
| SEP 26 | 25.0°C | 23.6°C | |
| SEP 27 | 25.0°C | 23.7°C | |
| SEP 28 | 25.0°C | 23.8°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 | 3°C | 6°C |
| March | 3°C | 6°C | 10°C |
| April | 5°C | 11°C | 18°C |
| May | 14°C | 18°C | 23°C |
| June | 20°C | 23°C | 26°C |
| July | 25°C | 28°C | 31°C |
| August | 24°C | 27°C | 30°C |
| September | 23°C | 25°C | 27°C |
| October | 16°C | 20°C | 24°C |
| November | 7°C | 12°C | 16°C |
| December | 0°C | 4°C | 7°C |
Lake Springfield: Water Temperature by Location
Lake Springfield: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Springfield is a man-made reservoir in central Illinois whose surface temperatures follow the region’s seasonal cycle. In spring (April–May) surface water commonly warms from roughly 45–65°F (7–18°C) as air temperatures rise. By summer (June–August) the lake often reaches about 70–80°F (21–27°C), and on hot stretches may climb into the mid-80s°F (around 29°C) in shallow bays. Autumn sees a steady cooling, with surface readings dropping from about 60°F to the 40s°F (16–4°C) through September to November. In winter the lake can approach freezing, with many areas in the low 30s–40°F (0–5°C) and occasional ice cover when conditions are sustained.
Swimming in Lake Springfield is generally restricted rather than encouraged because the reservoir serves as a municipal water supply and because of safety concerns such as variable depths, cold-water shock, and boat traffic. The city and park authorities typically permit boating and fishing in designated zones but discourage or prohibit unregulated wading and swimming to protect water quality and public safety. Visitors who want to swim should consult local rules and opt for supervised municipal pools or designated, staffed beaches in the region where lifeguards and water-quality monitoring are provided.