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Wachusett Reservoir

Wachusett Reservoir Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Wachusett 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

56°F

TODAY

56°F

YESTERDAY

47°F

A WEEK AGO

As of today, the minimum water temperature in the Wachusett Reservoir ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.

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 Wachusett Reservoir Over the Last 30 Days

Today the water temperature in Wachusett Reservoir is higher than the same day in previous years. The water temperature range here in May is from 48°F to 57°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 Wachusett 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
Apr 2947°F45°F
Apr 3047°F45°F
May 151°F52°F
May 251°F52°F
May 355°F52°F
May 455°F52°F
May 556°F52°F
May 656°F52°F
May 752°F55°F
May 852°F55°F
May 952°F55°F
May 1052°F55°F
May 1152°F55°F
May 1252°F55°F
May 1352°F54°F
May 1452°F54°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 Wachusett Reservoir by Month

January

MinimumAverageMaximum
32°F36°F41°F

February

MinimumAverageMaximum
32°F35°F39°F

March

MinimumAverageMaximum
32°F37°F41°F

April

MinimumAverageMaximum
37°F45°F52°F

May

MinimumAverageMaximum
48°F52°F57°F

June

MinimumAverageMaximum
59°F64°F68°F

July

MinimumAverageMaximum
73°F77°F81°F

August

MinimumAverageMaximum
72°F76°F81°F

September

MinimumAverageMaximum
68°F72°F77°F

October

MinimumAverageMaximum
57°F61°F66°F

November

MinimumAverageMaximum
41°F46°F50°F

December

MinimumAverageMaximum
34°F38°F43°F

Monthly Water Temperature Histogram for Wachusett Reservoir

Known Beaches in the Area of Wachusett Reservoir?

Sterling Town Beach

Sterling Town Beach is a 3-stars sandy beach, located in a 5 km (3 miles) radius of Wachusett Reservoir. There is parking. There are restrooms. Snorkeling is possible.

Wachusett Reservoir Weather

MAY 7

55°F / 66°F
fog

rain: 47% | wind: 11 mph

MAY 8

50°F / 72°F
overcast

rain: 42% | wind: 9 mph

MAY 9

43°F / 57°F
moderate rain

rain: 50% | wind: 9 mph

MAY 10

45°F / 50°F
slight rain showers

rain: 50% | wind: 14 mph

MAY 11

45°F / 70°F
overcast

rain: 14% | wind: 11 mph

MAY 12

45°F / 75°F
partly cloudy

rain: 5% | wind: 13 mph

Water Temperature in Wachusett Reservoir: General Trends and Swimming Opportunities

Wachusett Reservoir is located in the state of Massachusetts, in the county of Worcester, at an elevation of 377 feet (115 meters) above sea level.

Wachusett Reservoir is a medium lake. Its surface area is 6.2 sq mi (16.1 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Wachusett Reservoir varies throughout the year, ranging from 32°F (0°C) in January to 81°F (27°C) in July. The average annual water temperature of the lake is 54°F (12°C). The months when the average water temperature in Wachusett Reservoir exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

The nearest cities ans towns to Wachusett Reservoir are: Boylston, West Boylston, Sterling, Clinton, Berlin, Shrewsbury, South Lancaster, Northborough, Lancaster, Holden in Massachusetts.

Geographical Location of Wachusett Reservoir

Frequently Asked Questions About Wachusett Reservoir and its Water Temperatures

What is the current water temperature in Wachusett Reservoir?

The water temperature today in Wachusett Reservoir is 56°F (13.1°C).

What is the water temperature in Wachusett Reservoir during the summer months?

The average water temperature in Wachusett Reservoir during the summer months is typically between 64°F to 77°F (18°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 Wachusett Reservoir in May?

The average water temperature in Wachusett Reservoir in May ranges from 48°F to 57°F (9°C to 14°C).

What is the water temperature in Wachusett Reservoir in September?

The average water temperature in Wachusett Reservoir in September is typically between 68°F to 77°F (20°C to 25°C).

Where is Wachusett Reservoir located?

Wachusett Reservoir is located in the United States in the state of Massachusetts, in the county of Worcester, at an elevation of 377 feet (115 meters) above sea level. The surface area of the lake is 6.198 sq mi (16.05 sq km).

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

No, it is not possible to swim in Wachusett Reservoir, as it's a primary source of drinking water for Boston, Massachusetts, and swimming is strictly prohibited to maintain water quality.

What are the coordinates of Wachusett Reservoir?

Wachusett Reservoir is located at coordinates 42.3740°N 71.7380°W.

Is Lake Wachusett Reservoir a popular vacation spot among Americans?

Wachusett Reservoir is among the top 1,000 most popular lakes in the United States, which is impressive considering there are tens of thousands of lakes in the country.