Dry Lake Number One — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Dry Lake Number One, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Dry Lake Number One today is 21.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| JUN 2 | 15.9°C | 18.1°C | |
| JUN 3 | 19.4°C | 18.1°C | |
| JUN 4 | 18.9°C | 18.1°C | |
| JUN 5 | 20.5°C | 18.1°C | |
| JUN 6 | 21.0°C | 18.1°C | |
| JUN 7 | 21.6°C | 18.1°C | |
| JUN 8 | 21.7°C | 18.1°C | |
| JUN 10 | 18.1°C | 21.6°C | |
| JUN 11 | 18.1°C | 21.4°C | |
| JUN 12 | 18.1°C | 21.2°C | |
| JUN 13 | 18.1°C | 21.1°C | |
| JUN 14 | 18.1°C | 20.9°C | |
| JUN 15 | 18.1°C | 20.7°C | |
| JUN 16 | 18.1°C | 20.5°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 | 1°C | 7°C | 12°C |
| February | 1°C | 8°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 2°C | 11°C | 20°C |
| May | 7°C | 14°C | 22°C |
| June | 14°C | 18°C | 22°C |
| July | 17°C | 21°C | 24°C |
| August | 20°C | 24°C | 28°C |
| September | 17°C | 20°C | 22°C |
| October | 5°C | 12°C | 18°C |
| November | 3°C | 7°C | 10°C |
| December | 1°C | 6°C | 11°C |
Dry Lake Number One: Water Temperature by Location
Dry Lake Number One: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Dry Lake Number One is a typical shallow prairie lake in South Dakota, so its surface water temperatures change a lot through the year. In spring the lake is cold, often ranging from about 40–60°F (4–15°C) as snowmelt and cool rains freshen the water. Summer is when the surface warms most: typical summer surface temperatures are roughly 60–80°F (16–27°C), and on hot, calm afternoons shallow bays can reach the mid‑80s°F (around 29°C). In fall temperatures fall back into the 40–60°F (4–15°C) band as air cools, and in winter the lake commonly freezes with water at or below 32°F (0°C) under ice cover.
Swimming opportunities depend less on a uniform rule and more on local conditions and regulations. Recreational swimming is physically possible during the warmer months when surface temperatures are comfortable, but whether you should swim depends on access, signage, water quality (turbidity and algal blooms can occur in shallow lakes), and safety resources such as lifeguards. Many small prairie lakes have no formal swim facilities or monitoring, so visitors are advised to check with county or state authorities for advisories, avoid areas with visible algae or debris, and consider that shallow, warm water can heat quickly but may also harbor hazards.