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Lake Saint John
Lake Saint John Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Lake Saint John, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Lake Water Temperature Information
35°F
TODAY
35°F
YESTERDAY
34°F
A WEEK AGO
As of today, the minimum water temperature in the Lake Saint John ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
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.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Lake Saint John Over the Last 30 Days
Today the water temperature in Lake Saint John is lower than the same day in previous years. The water temperature range here in February is from 32°F to 59°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.
The forecasted water temperature values for Lake Saint John are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 16 | 34°F | 46°F | |
| Feb 17 | 34°F | 46°F | |
| Feb 18 | 34°F | 46°F | |
| Feb 19 | 34°F | 46°F | |
| Feb 20 | 34°F | 46°F | |
| Feb 21 | 34°F | 46°F | |
| Feb 22 | 35°F | 46°F | |
| Feb 23 | 35°F | 46°F | |
| Feb 24 | 46°F | 35°F | |
| Feb 25 | 46°F | 36°F | |
| Feb 26 | 46°F | 37°F | |
| Feb 27 | 46°F | 37°F | |
| Feb 28 | 46°F | 38°F | |
| Mar 1 | 58°F | 39°F | |
| Mar 2 | 58°F | 40°F | |
| Mar 3 | 58°F | 41°F |
Water Temperature Ranges in Lake Saint John by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 34°F | 44°F | 54°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 46°F | 59°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 54°F | 58°F | 63°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 59°F | 63°F | 68°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 61°F | 65°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 64°F | 68°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 67°F | 72°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 73°F | 78°F | 82°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 64°F | 68°F | 72°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 45°F | 50°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 39°F | 44°F | 48°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 47°F | 52°F |
Monthly Water Temperature Histogram for Lake Saint John
Known Beaches in the Area of Lake Saint John?
Arlington Beach
Arlington Beach is a 2-stars sandy beach, located in a 8 km (5 miles) radius of Lake Saint John. There is parking.
South Poinsett Access Area
South Poinsett Access Area is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Lake Saint John. There are restrooms. South Poinsett Access Area is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.
Lake Saint John Weather
FEBRUARY 23
25°F / 45°F
overcastrain: 1% | wind: 12 mph
FEBRUARY 24
36°F / 45°F
overcastrain: 4% | wind: 18 mph
FEBRUARY 25
34°F / 48°F
light drizzlerain: 8% | wind: 19 mph
FEBRUARY 26
34°F / 45°F
moderate snow fallrain: 21% | wind: 21 mph
Water Temperature in Lake Saint John: General Trends and Swimming Opportunities
Lake Saint John (SD) is located in the state of South Dakota, in the county of Hamlin, at an elevation of 1650 feet (503 meters) above sea level.
Lake Saint John (SD) is a small lake. Its surface area is 1.99 sq mi (5.14 sq km). These are small water bodies often used for recreation, fishing, or irrigation.
The water temperature in Lake Saint John (SD) varies throughout the year, ranging from 39°F (4°C) in November to 82°F (28°C) in August. The average annual water temperature of the lake is 59°F (15°C). The months when the average water temperature in Lake Saint John (SD) exceeds 68 degrees Fahrenheit (20°C) are June, August and September.
The nearest cities ans towns to Lake Saint John are: Hayti, Volga, De Smet, Watertown, Brookings, Clear Lake in South Dakota.
Geographical Location of Lake Saint John
Nearby Lakes
Frequently Asked Questions About Lake Saint John and its Water Temperatures
What is the current water temperature in Lake Saint John?
The water temperature today in Lake Saint John is 35°F (1.5°C).
What is the water temperature in Lake Saint John during the summer months?
The average water temperature in Lake Saint John during the summer months is typically between 67°F to 78°F (19°C to 26°C), and it can reach up to 82°F (28°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Lake Saint John in May?
The average water temperature in Lake Saint John in May ranges from 61°F to 70°F (16°C to 21°C).
What is the water temperature in Lake Saint John in September?
The average water temperature in Lake Saint John in September is typically between 64°F to 72°F (18°C to 22°C).
Where is Lake Saint John located?
Lake Saint John is located in the United States in the state of South Dakota, in the county of Hamlin, at an elevation of 1650 feet (503 meters) above sea level. The surface area of the lake is 1.986 sq mi (5.14 sq km).
Is it possible to swim in Lake Saint John and what are the possibilities for this?
Yes, it is possible to swim in Lake Saint John, South Dakota, provided that there are no local restrictions or advisories in place. The suitability for swimming may be influenced by factors such as water temperature, cleanliness, and weather conditions.
What are the coordinates of Lake Saint John?
Lake Saint John is located at coordinates 44.5650°N 97.1860°W.
Is Lake Lake Saint John a popular vacation spot among Americans?
Lake Saint John enjoys local popularity among the residents of State South Dakota, and nationally, it ranks in the top 10 percent of all lakes in the country.