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Boise River

Boise River Current Water Temperature and Forecast

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

38°F

TODAY

40°F

YESTERDAY

35°F

A WEEK AGO

As of today, the minimum water temperature in the Boise River 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 Boise River Over the Last 30 Days

Today the water temperature in Boise River is lower than the same day in previous years. The water temperature range here in February is from 34°F to 48°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 Boise River 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 1535°F41°F
Feb 1635°F41°F
Feb 1735°F41°F
Feb 1836°F41°F
Feb 1938°F41°F
Feb 2040°F41°F
Feb 2140°F41°F
Feb 2238°F41°F
Feb 2341°F38°F
Feb 2441°F39°F
Feb 2541°F39°F
Feb 2641°F39°F
Feb 2741°F39°F
Feb 2841°F39°F
Mar 144°F40°F
Mar 244°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 Boise River 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

Water Temperature in Cities and Towns on Boise River

United States (Idaho)
39°F
Middleton
United States (Idaho)
40°F

Boise River Weather

FEBRUARY 23

27°F / 37°F
dense intensity drizzle

rain: 78% | wind: 14 mph

FEBRUARY 24

36°F / 43°F
moderate drizzle

rain: 62% | wind: 12 mph

FEBRUARY 25

36°F / 46°F
light drizzle

rain: 24% | wind: 11 mph

FEBRUARY 26

32°F / 50°F
clear sky

rain: 8% | wind: 7 mph

Water Temperature in Boise River: General Trends and Swimming Opportunities

Source Sawtooth Range
• location Idaho
• elevation 3,497 ft (1,066 m)
Mouth Snake River
• location Idaho
• elevation 2,100 ft (640 m)
Length 102 mi (164 km)

The Boise River, flowing through the city of Boise in southwestern Idaho, is known for its clear waters and recreational opportunities. The river’s water temperature is generally cool, with summer temperatures typically ranging from the mid-50s to low 60s Fahrenheit (13-18°C). While this is refreshing during the hot summer months, it is still on the cooler side, especially compared to warmer lakes or pools. In the winter months, the water temperature drops significantly due to snowmelt and cold air, which can bring the temperature down into the low 40s (5-10°C).

Swimming in the Boise River is popular during the summer, especially in areas where the river's flow is calmer. The river features several parks and access points, such as the Boise River Greenbelt, where locals and visitors enjoy activities like tubing, wading, and swimming. The river’s clear, fresh water provides an inviting environment for those seeking relief from the summer heat. However, swimmers should be cautious of the strong currents in certain sections, particularly in areas where the flow is faster or the water is deeper.

While swimming is possible in the Boise River, it is often more known for tubing and kayaking, as its flow offers ideal conditions for these activities. The river is also a popular spot for fishing and enjoying the scenic beauty of the Boise area. For those specifically looking to swim, calmer sections and designated swimming areas provide a safe and enjoyable experience. The Boise River remains a key natural resource for recreation and a beloved spot for outdoor activities.

Geographical Location of Boise River

Frequently Asked Questions About Boise River and its Water Temperatures

What is the current water temperature in Boise River?

The water temperature today in Boise River ranges from 39°F (3.8°C) to 40°F (4.3°C).

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

The average water temperature in Boise River 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 River in May?

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

What is the water temperature in Boise River in September?

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

Where does Boise River flow?

Boise River flows through United States (Idaho).

Is it possible to swim in the Boise River?

Yes, it is possible to swim in the Boise River. However, caution must be exercised due to varying water levels and currents.

What major cities are located on Boise River?

Cities along the course of Boise River include Boise (Idaho).