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Island Park Reservoir

Island Park Reservoir Current Water Temperature and Forecast

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

49°F

TODAY

50°F

YESTERDAY

50°F

A WEEK AGO

As of today, the minimum water temperature in the Island Park Reservoir 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 Island Park Reservoir Over the Last 30 Days

Today the water temperature in Island Park Reservoir is higher than the same day in previous years. The water temperature range here in October is from 39°F to 57°F. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Island Park 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
Oct 1550°F48°F
Oct 1650°F48°F
Oct 1750°F48°F
Oct 1850°F48°F
Oct 1950°F48°F
Oct 2050°F48°F
Oct 2150°F48°F
Oct 2249°F48°F
Oct 2348°F49°F
Oct 2448°F49°F
Oct 2548°F49°F
Oct 2648°F49°F
Oct 2748°F49°F
Oct 2848°F49°F
Oct 2948°F49°F
Oct 3048°F49°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 Island Park Reservoir by Month

January

MinimumAverageMaximum
32°F35°F39°F

February

MinimumAverageMaximum
32°F37°F41°F

March

MinimumAverageMaximum
34°F39°F43°F

April

MinimumAverageMaximum
37°F42°F46°F

May

MinimumAverageMaximum
39°F46°F54°F

June

MinimumAverageMaximum
54°F58°F63°F

July

MinimumAverageMaximum
61°F66°F70°F

August

MinimumAverageMaximum
68°F73°F79°F

September

MinimumAverageMaximum
57°F63°F68°F

October

MinimumAverageMaximum
39°F48°F57°F

November

MinimumAverageMaximum
32°F32°F36°F

December

MinimumAverageMaximum
32°F34°F39°F

Monthly Water Temperature Histogram for Island Park Reservoir

Island Park Reservoir Weather

OCTOBER 23

30°F / 52°F
overcast

rain: 3% | wind: 7 mph

OCTOBER 24

28°F / 48°F
overcast

rain: 2% | wind: 9 mph

Water Temperature in Island Park Reservoir: General Trends and Swimming Opportunities

Island Park Reservoir is located in the state of Idaho, in the county of Fremont, at an elevation of 6295 feet (1919 meters) above sea level.

Island Park Reservoir is a medium lake. Its surface area is 11.8 sq mi (30.6 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Island Park Reservoir varies throughout the year, ranging from 32°F (0°C) in January to 79°F (26°C) in August. The average annual water temperature of the lake is 48°F (9°C). The average monthly water temperature in Island Park Reservoir exceeds 68 degrees Fahrenheit (20°C) only in August.

The nearest cities ans towns to Island Park Reservoir are: Ashton in Idaho and West Yellowstone in Montana.

Geographical Location of Island Park Reservoir

Frequently Asked Questions About Island Park Reservoir and its Water Temperatures

What is the current water temperature in Island Park Reservoir?

The water temperature today in Island Park Reservoir is 49°F (9.2°C).

What is the water temperature in Island Park Reservoir during the summer months?

The average water temperature in Island Park Reservoir during the summer months is typically between 59°F to 74°F (15°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 Island Park Reservoir in May?

The average water temperature in Island Park Reservoir in May ranges from 39°F to 48°F (4°C to 9°C).

What is the water temperature in Island Park Reservoir in September?

The average water temperature in Island Park Reservoir in September is typically between 59°F to 68°F (15°C to 20°C).

Where is Island Park Reservoir located?

Island Park Reservoir is located in the United States in the state of Idaho, in the county of Fremont, at an elevation of 6295 feet (1919 meters) above sea level. The surface area of the lake is 11.797 sq mi (30.55 sq km).

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

Yes, it is possible to swim in Island Park Reservoir, Idaho. However, the available options may vary depending on local regulations, weather conditions, and individual safety measures.

What are the coordinates of Island Park Reservoir?

Island Park Reservoir is located at coordinates 44.4100°N 111.5120°W.

Is Lake Island Park Reservoir a popular vacation spot among Americans?

Island Park Reservoir enjoys local popularity among the residents of State Idaho, and nationally, it ranks in the top 10 percent of all lakes in the country.

What species of fish can be found in Island Park Reservoir?

Island Park Reservoir is home to fish species such as Rainbow trout (best caught in Spring, Fall), Cutthroat trout (Spring, Fall), Brook trout (Spring, Fall), Brown trout (Spring, Fall).