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O'Neill Forebay

O'Neill Forebay Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in O'Neill Forebay, 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

58°F

A WEEK AGO

As of today, the minimum water temperature in the O'Neill Forebay 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 O'Neill Forebay Over the Last 30 Days

Today the water temperature in O'Neill Forebay is lower than the same day in previous years. The water temperature range here in April is from 55°F to 64°F. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for O'Neill Forebay 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
Mar 2558°F51°F
Mar 2657°F51°F
Mar 2759°F51°F
Mar 2859°F51°F
Mar 2958°F51°F
Mar 3058°F51°F
Mar 3156°F51°F
Apr 156°F60°F
Apr 260°F56°F
Apr 360°F56°F
Apr 460°F56°F
Apr 560°F57°F
Apr 660°F57°F
Apr 760°F57°F
Apr 860°F57°F
Apr 960°F57°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 O'Neill Forebay by Month

January

MinimumAverageMaximum
48°F53°F57°F

February

MinimumAverageMaximum
48°F52°F57°F

March

MinimumAverageMaximum
43°F51°F59°F

April

MinimumAverageMaximum
55°F60°F64°F

May

MinimumAverageMaximum
57°F61°F66°F

June

MinimumAverageMaximum
63°F67°F72°F

July

MinimumAverageMaximum
64°F69°F73°F

August

MinimumAverageMaximum
70°F74°F79°F

September

MinimumAverageMaximum
66°F70°F75°F

October

MinimumAverageMaximum
63°F67°F72°F

November

MinimumAverageMaximum
61°F66°F70°F

December

MinimumAverageMaximum
54°F58°F63°F

Monthly Water Temperature Histogram for O'Neill Forebay

O'Neill Forebay Weather

APRIL 2

37°F / 63°F
overcast

rain: 65% | wind: 19 mph

APRIL 3

39°F / 64°F
overcast

rain: 3% | wind: 10 mph

APRIL 4

43°F / 70°F
clear sky

rain: 2% | wind: 11 mph

APRIL 5

45°F / 73°F
clear sky

rain: 1% | wind: 12 mph

Water Temperature in O'Neill Forebay: General Trends and Swimming Opportunities

O'Neill Forebay is located in the state of California, in the county of Merced, at an elevation of 216 feet (66 meters) above sea level.

O'Neill Forebay is a small lake. Its surface area is 3.51 sq mi (9.09 sq km). These are small water bodies often used for recreation, fishing, or irrigation.

The water temperature in O'Neill Forebay varies throughout the year, ranging from 43°F (6°C) in March to 79°F (26°C) in August. The average annual water temperature of the lake is 63°F (17°C). The months when the average water temperature in O'Neill Forebay exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

The nearest cities ans towns to O'Neill Forebay are: Los Banos, Gustine, Newman, South Dos Palos, Dos Palos, Hilmar-Irwin, Hollister, Ridgemark, Patterson, Livingston in California.

Geographical Location of O'Neill Forebay

Frequently Asked Questions About O'Neill Forebay and its Water Temperatures

What is the current water temperature in O'Neill Forebay?

The water temperature today in O'Neill Forebay is 56°F (13.2°C).

What is the water temperature in O'Neill Forebay during the summer months?

The average water temperature in O'Neill Forebay during the summer months is typically between 67°F to 74°F (19°C to 23°C), and it can reach up to 79°F (26°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in O'Neill Forebay in May?

The average water temperature in O'Neill Forebay in May ranges from 57°F to 66°F (14°C to 19°C).

What is the water temperature in O'Neill Forebay in September?

The average water temperature in O'Neill Forebay in September is typically between 66°F to 75°F (19°C to 24°C).

Where is O'Neill Forebay located?

O'Neill Forebay is located in the United States in the state of California, in the county of Merced, at an elevation of 216 feet (66 meters) above sea level. The surface area of the lake is 3.509 sq mi (9.09 sq km).

Is it possible to swim in O'Neill Forebay and what are the possibilities for this?

No, it's not possible to swim in O'Neill Forebay due to regulations by the California Department of Water Resources. The reservoir is primarily used for fishing and boating.

What are the coordinates of O'Neill Forebay?

O'Neill Forebay is located at coordinates 37.0880°N 121.0510°W.

Is Lake O'Neill Forebay a popular vacation spot among Americans?

O'Neill Forebay enjoys local popularity among the residents of State California, and nationally, it ranks in the top 10 percent of all lakes in the country.