St. Louis — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in St. Louis, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in St. Louis today is 19.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 | 20.9°C | 16.5°C | |
| OCT 6 | 20.7°C | 16.5°C | |
| OCT 7 | 20.3°C | 16.5°C | |
| OCT 8 | 19.5°C | 16.5°C | |
| OCT 9 | 19.3°C | 16.5°C | |
| OCT 10 | 19.0°C | 16.5°C | |
| OCT 11 | 19.5°C | 16.5°C | |
| OCT 12 | 19.8°C | 16.5°C | |
| OCT 13 | 16.5°C | 19.5°C | |
| OCT 14 | 16.5°C | 19.4°C | |
| OCT 15 | 16.5°C | 19.2°C | |
| OCT 16 | 16.5°C | 19.1°C | |
| OCT 17 | 16.5°C | 18.9°C | |
| OCT 18 | 16.5°C | 18.7°C | |
| OCT 19 | 16.5°C | 18.6°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 | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 3°C | 9°C | 14°C |
| April | 5°C | 12°C | 19°C |
| May | 8°C | 16°C | 23°C |
| June | 14°C | 20°C | 26°C |
| July | 17°C | 24°C | 31°C |
| August | 17°C | 23°C | 30°C |
| September | 11°C | 19°C | 27°C |
| October | 8°C | 17°C | 25°C |
| November | 3°C | 10°C | 17°C |
| December | 2°C | 6°C | 8°C |
St. Louis: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
In St. Louis, Missouri, the Mississippi River runs through the city, offering a scenic landscape, but it is not typically considered a destination for swimming. The water temperature in the Mississippi River varies significantly throughout the year. During the warmer summer months, temperatures can reach anywhere between 75°F and 85°F (24°C to 29°C), which is warm enough for water activities. However, due to strong currents, water debris, and concerns about water quality, swimming in the Mississippi River is not safe or recommended in the area.
Despite the warm water temperatures in summer, the Mississippi River's strong flow and unpredictable nature make it more suitable for boating, fishing, and other non-swimming activities. Swimming in the river could pose serious risks, including swift currents, underwater obstacles, and pollution. As a result, locals and visitors prefer alternative swimming options, such as public pools or water parks, where water quality and safety are closely monitored.
For those seeking safe water recreation in St. Louis, there are various parks and pools throughout the city. Local aquatic centers and public swimming pools offer safe and controlled environments for swimming, with water temperatures typically maintained between 75°F and 80°F (24°C to 27°C). These alternatives provide a much safer and more comfortable option for swimming, especially during the hot summer months.