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Boise

Water Temperature in Boise in Boise River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Boise in Boise River, 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 Water Temperature in Boise

42°F

TODAY

41°F

YESTERDAY

43°F

A WEEK AGO

As of today, the minimum water temperature in Boise ranges from 41°F (5°C) to 47°F (8°C). This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.

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 Boise River in Boise Over the Last 30 Days

Today the water temperature in Boise is lower than the same day in previous years. The water temperature range here in March is from 37°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 Boise 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.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
Mar 2043°F44°F
Mar 2143°F44°F
Mar 2242°F44°F
Mar 2342°F44°F
Mar 2442°F44°F
Mar 2541°F44°F
Mar 2641°F44°F
Mar 2742°F44°F
Mar 2844°F42°F
Mar 2944°F42°F
Mar 3044°F42°F
Mar 3144°F43°F
Apr 150°F43°F
Apr 250°F44°F
Apr 350°F44°F
Apr 450°F44°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 Boise by Month

January

MinimumAverageMaximum
34°F41°F48°F

February

MinimumAverageMaximum
34°F41°F48°F

March

MinimumAverageMaximum
37°F44°F52°F

April

MinimumAverageMaximum
41°F50°F61°F

May

MinimumAverageMaximum
46°F56°F70°F

June

MinimumAverageMaximum
57°F65°F72°F

July

MinimumAverageMaximum
63°F68°F75°F

August

MinimumAverageMaximum
63°F71°F73°F

September

MinimumAverageMaximum
52°F64°F66°F

October

MinimumAverageMaximum
46°F56°F61°F

November

MinimumAverageMaximum
37°F47°F61°F

December

MinimumAverageMaximum
37°F40°F46°F

Monthly Water Temperature Histogram for Boise River in Boise

Boise Weather

MARCH 28

43°F / 68°F
moderate drizzle

rain: 32% | wind: 14 mph

MARCH 29

37°F / 52°F
moderate drizzle

rain: 32% | wind: 17 mph

MARCH 30

39°F / 55°F
overcast

rain: 13% | wind: 14 mph

MARCH 31

41°F / 55°F
moderate drizzle

rain: 54% | wind: 16 mph

APRIL 1

37°F / 54°F
light drizzle

rain: 54% | wind: 13 mph

Water Temperature in Boise: General Trends and Swimming Opportunities

The Boise River, flowing through the city of Boise, Idaho, offers a variety of recreational activities, although swimming is generally not the most popular choice due to the river's varying conditions. During the warmer months, typically in late spring and summer, the water temperature in the Boise River can range from 60°F to 70°F (15°C to 21°C). While this temperature may feel refreshing on a hot day, the river's swift currents and the potential presence of rocks and debris make it less ideal for casual swimming.

That being said, the Boise River is a popular destination for activities such as tubing, kayaking, and paddleboarding. These activities are especially enjoyed during the summer, when the water temperature is more tolerable, and the river's flow provides a fun, natural current for tubing. For those looking to cool off, the river provides a refreshing spot, but it's best to enjoy it through these other recreational options rather than swimming.

For a more traditional swimming experience, Boise offers a number of community pools and nearby lakes where the water is calmer and more suitable for swimming. The proximity of the city to outdoor destinations also provides opportunities to visit nearby reservoirs and lakes, where water temperatures may rise to more comfortable levels for swimmers, typically around 70°F to 75°F (21°C to 24°C) in the summer months. These locations offer a safer and more enjoyable alternative for swimming enthusiasts.

Geographical Location of Boise

Frequently Asked Questions About Boise and its Water Temperatures

What is the current water temperature in Boise?

The water temperature today in Boise is 42°F (5.5°C).

What is the water temperature in Boise during the summer months?

The average water temperature in Boise during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Boise in May?

The average water temperature in Boise in May ranges from 46°F to 70°F (8°C to 21°C).

What is the water temperature in Boise in September?

The average water temperature in Boise in September is typically between 52°F to 66°F (11°C to 19°C).

Is it possible to swim in the Boise River in Boise, and what are the available options for doing so?

Yes, it is possible to swim in the Boise River in Boise. Options include Barber Park for a relaxed swim or whitewater parks for adventurous river surfing and kayaking.