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Union Valley Reservoir

Union Valley Reservoir Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Union Valley Reservoir, 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

40°F

TODAY

40°F

YESTERDAY

39°F

A WEEK AGO

As of today, the minimum water temperature in the Union Valley Reservoir 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 Union Valley Reservoir Over the Last 30 Days

Today the water temperature in Union Valley Reservoir is lower than the same day in previous years. The water temperature range here in February is from 37°F to 45°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 Union Valley Reservoir 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

DateCurrentAverageForecast
Feb 1639°F41°F
Feb 1739°F41°F
Feb 1838°F41°F
Feb 1939°F41°F
Feb 2039°F41°F
Feb 2139°F41°F
Feb 2240°F41°F
Feb 2340°F41°F
Feb 2441°F40°F
Feb 2541°F40°F
Feb 2641°F40°F
Feb 2741°F40°F
Feb 2841°F40°F
Mar 142°F40°F
Mar 242°F40°F
Mar 342°F40°F
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Union Valley Reservoir by Month

January

MinimumAverageMaximum
39°F43°F48°F

February

MinimumAverageMaximum
37°F41°F45°F

March

MinimumAverageMaximum
37°F42°F46°F

April

MinimumAverageMaximum
45°F49°F54°F

May

MinimumAverageMaximum
54°F58°F63°F

June

MinimumAverageMaximum
63°F67°F72°F

July

MinimumAverageMaximum
73°F77°F81°F

August

MinimumAverageMaximum
73°F77°F81°F

September

MinimumAverageMaximum
70°F75°F79°F

October

MinimumAverageMaximum
59°F64°F68°F

November

MinimumAverageMaximum
52°F56°F61°F

December

MinimumAverageMaximum
41°F46°F50°F

Monthly Water Temperature Histogram for Union Valley Reservoir

Union Valley Reservoir Weather

FEBRUARY 23

39°F / 54°F
moderate drizzle

rain: 15% | wind: 7 mph

FEBRUARY 24

39°F / 59°F
overcast

rain: 15% | wind: 8 mph

FEBRUARY 25

34°F / 55°F
overcast

rain: 10% | wind: 6 mph

FEBRUARY 26

36°F / 64°F
clear sky

rain: 1% | wind: 10 mph

Water Temperature in Union Valley Reservoir: General Trends and Swimming Opportunities

Union Valley Reservoir is located in the state of California, in the county of El Dorado, at an elevation of 4832 feet (1473 meters) above sea level.

Union Valley Reservoir is a medium lake. Its surface area is 4.3 sq mi (11.1 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Union Valley Reservoir varies throughout the year, ranging from 37°F (3°C) in February to 81°F (27°C) in July. The average annual water temperature of the lake is 57°F (14°C). The months when the average water temperature in Union Valley Reservoir exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

The nearest cities ans towns to Union Valley Reservoir are: Pollock Pines, Camino, Tahoma, Somerset, Placerville, Georgetown, South Lake Tahoe, Sunnyside-Tahoe City, Foresthill, Diamond Springs in California.

Geographical Location of Union Valley Reservoir

Frequently Asked Questions About Union Valley Reservoir and its Water Temperatures

What is the current water temperature in Union Valley Reservoir?

The water temperature today in Union Valley Reservoir is 40°F (4.2°C).

What is the water temperature in Union Valley Reservoir during the summer months?

The average water temperature in Union Valley Reservoir during the summer months is typically between 67°F to 77°F (19°C to 25°C), and it can reach up to 81°F (27°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Union Valley Reservoir in May?

The average water temperature in Union Valley Reservoir in May ranges from 54°F to 63°F (12°C to 17°C).

What is the water temperature in Union Valley Reservoir in September?

The average water temperature in Union Valley Reservoir in September is typically between 70°F to 79°F (21°C to 26°C).

Where is Union Valley Reservoir located?

Union Valley Reservoir is located in the United States in the state of California, in the county of El Dorado, at an elevation of 4832 feet (1473 meters) above sea level. The surface area of the lake is 4.273 sq mi (11.07 sq km).

Is it possible to swim in Union Valley Reservoir and what are the possibilities for this?

Yes, it is possible to swim in Union Valley Reservoir in California. The possibilities include recreational swimming, boating, and engaging in other water sports.

What are the coordinates of Union Valley Reservoir?

Union Valley Reservoir is located at coordinates 38.8740°N 120.4130°W.

Is Lake Union Valley Reservoir a popular vacation spot among Americans?

Union Valley Reservoir enjoys local popularity among the residents of State California, and nationally, it ranks in the top 10 percent of all lakes in the country.