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Lake Hennessey
Lake Hennessey Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Lake Hennessey, 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
49°F
TODAY
50°F
YESTERDAY
51°F
A WEEK AGO
As of today, the minimum water temperature in the Lake Hennessey ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used.
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 Hennessey Over the Last 30 Days
Today the water temperature in Lake Hennessey is higher than the same day in previous years. The water temperature range here in February is from 43°F to 52°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Lake Hennessey 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 | 51°F | 47°F | |
| Feb 17 | 51°F | 47°F | |
| Feb 18 | 51°F | 47°F | |
| Feb 19 | 49°F | 47°F | |
| Feb 20 | 49°F | 47°F | |
| Feb 21 | 49°F | 47°F | |
| Feb 22 | 50°F | 47°F | |
| Feb 23 | 49°F | 47°F | |
| Feb 24 | 47°F | 49°F | |
| Feb 25 | 47°F | 49°F | |
| Feb 26 | 47°F | 49°F | |
| Feb 27 | 47°F | 49°F | |
| Feb 28 | 47°F | 49°F | |
| Mar 1 | 53°F | 49°F | |
| Mar 2 | 53°F | 49°F | |
| Mar 3 | 53°F | 49°F |
Water Temperature Ranges in Lake Hennessey by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 50°F | 54°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 47°F | 52°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 53°F | 57°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 61°F | 66°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 68°F | 72°F | 77°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 70°F | 75°F | 79°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 73°F | 78°F | 82°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 73°F | 78°F | 82°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 68°F | 72°F | 77°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 66°F | 71°F | 75°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 59°F | 64°F | 68°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 56°F | 61°F |
Monthly Water Temperature Histogram for Lake Hennessey
Known Beaches in the Area of Lake Hennessey?
Lake Hennessey Beach
Lake Hennessey Beach is a 3-stars sandy beach, is located directly in Lake Hennessey. There is parking. There are restrooms. Lake Hennessey Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Lake Hennessey Weather
FEBRUARY 24
46°F / 63°F
overcastrain: 20% | wind: 7 mph
FEBRUARY 25
43°F / 66°F
overcastrain: 20% | wind: 6 mph
FEBRUARY 26
45°F / 72°F
overcastrain: 0% | wind: 4 mph
FEBRUARY 27
48°F / 70°F
overcastrain: 18% | wind: 6 mph
FEBRUARY 28
43°F / 64°F
overcastrain: 15% | wind: 5 mph
Water Temperature in Lake Hennessey: General Trends and Swimming Opportunities
Lake Hennessey is located in the state of California, in the county of Napa, at an elevation of 311 feet (95 meters) above sea level.
Lake Hennessey is a small lake. Its surface area is 1.19 sq mi (3.08 sq km). These are small water bodies often used for recreation, fishing, or irrigation.
The water temperature in Lake Hennessey varies throughout the year, ranging from 43°F (6°C) in February to 82°F (28°C) in July. The average annual water temperature of the lake is 64°F (18°C). The months when the average water temperature in Lake Hennessey exceeds 68 degrees Fahrenheit (20°C) are May, June, July, August, September and October.
The nearest cities ans towns to Lake Hennessey are: Saint Helena, Deer Park, Yountville, Angwin, Kenwood, Eldridge, Calistoga, Fetters Hot Springs-Agua Caliente, Boyes Hot Springs, Sonoma in California.
Geographical Location of Lake Hennessey
Nearby Lakes
Frequently Asked Questions About Lake Hennessey and its Water Temperatures
What is the current water temperature in Lake Hennessey?
The water temperature today in Lake Hennessey is 49°F (9.7°C).
What is the water temperature in Lake Hennessey during the summer months?
The average water temperature in Lake Hennessey during the summer months is typically between 75°F to 78°F (24°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 Hennessey in May?
The average water temperature in Lake Hennessey in May ranges from 68°F to 77°F (20°C to 25°C).
What is the water temperature in Lake Hennessey in September?
The average water temperature in Lake Hennessey in September is typically between 68°F to 77°F (20°C to 25°C).
Where is Lake Hennessey located?
Lake Hennessey is located in the United States in the state of California, in the county of Napa, at an elevation of 311 feet (95 meters) above sea level. The surface area of the lake is 1.189 sq mi (3.08 sq km).
Is it possible to swim in Lake Hennessey and what are the possibilities for this?
No, it is not possible to swim in Lake Hennessey, California. The lake's regulations strictly prohibit swimming and other body-contact water activities.
What are the coordinates of Lake Hennessey?
Lake Hennessey is located at coordinates 38.4920°N 122.3770°W.
Is Lake Lake Hennessey a popular vacation spot among Americans?
Lake Hennessey enjoys local popularity among the residents of State California, and nationally, it ranks in the top 10 percent of all lakes in the country.
What species of fish can be found in Lake Hennessey?
Lake Hennessey is home to fish species such as Largemouth bass (best caught in Spring, Fall), Smallmouth bass (Spring, Fall), Bluegill (Spring, Summer), Channel catfish (Spring, Summer), Black crappie (Spring, Fall).