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Jefferson River

Jefferson River Current Water Temperature and Forecast

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

5.5°C

TODAY

8.1°C

YESTERDAY

7.6°C

A WEEK AGO

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

Today the water temperature in Jefferson River is lower than the same day in previous years. The water temperature range here in April is from 5°C to 16°C. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Jefferson 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
Apr 137.6°C9.9°C
Apr 148.2°C9.9°C
Apr 157.8°C9.9°C
Apr 166.4°C9.9°C
Apr 176.7°C9.9°C
Apr 188.2°C9.9°C
Apr 198.1°C9.9°C
Apr 205.5°C9.9°C
Apr 219.9°C5.8°C
Apr 229.9°C6.1°C
Apr 239.9°C6.3°C
Apr 249.9°C6.5°C
Apr 259.9°C6.7°C
Apr 269.9°C6.9°C
Apr 279.9°C7.1°C
Apr 289.9°C7.3°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Jefferson River by Month

January

MinimumAverageMaximum
0°C4.5°C9°C

February

MinimumAverageMaximum
0°C4.5°C9°C

March

MinimumAverageMaximum
0°C5.5°C11°C

April

MinimumAverageMaximum
5°C9.9°C16°C

May

MinimumAverageMaximum
8°C13.4°C21°C

June

MinimumAverageMaximum
14°C18.5°C22°C

July

MinimumAverageMaximum
17°C20°C24°C

August

MinimumAverageMaximum
17°C21.4°C23°C

September

MinimumAverageMaximum
11°C17.6°C19°C

October

MinimumAverageMaximum
8°C13.3°C16°C

November

MinimumAverageMaximum
3°C8.1°C16°C

December

MinimumAverageMaximum
3°C4.7°C8°C

Monthly Water Temperature Histogram for Jefferson River

Water Temperature in Cities and Towns on Jefferson River

Whitehall
United States (Montana)
5.9°C
Three Forks
United States (Montana)
5.6°C

Jefferson River Weather

APRIL 20

3°C / 16°C
light drizzle

rain: 30% | wind: 23 km/h

APRIL 21

2°C / 14°C
slight snow shower

rain: 54% | wind: 33 km/h

APRIL 22

-1°C / 11°C
slight snow shower

rain: 54% | wind: 16 km/h

APRIL 23

1°C / 14°C
overcast

rain: 13% | wind: 9 km/h

Water Temperature in Jefferson River: General Trends and Swimming Opportunities

Source:
• location Twin Bridges, Montana
Mouth Missouri River
• location Three Forks, Montana
Length 83 mi (134 km)

The Jefferson River, located in southwestern Montana, is a pristine waterway known for its clear waters and tranquil surroundings. Fed by mountain streams and snowmelt, the river’s temperature remains relatively cool for much of the year. In the spring and early summer, when snowmelt is at its peak, the water is typically between 45°F and 55°F (7°C to 13°C). By mid to late summer, the water warms to a more comfortable range of 60°F–70°F (15°C to 21°C), especially in slower-moving sections, making it more inviting for recreational activities.

Swimming in the Jefferson River is possible, particularly during the warmer summer months when the water temperature is more agreeable. However, the river is better known for activities like fly fishing, kayaking, and canoeing, thanks to its calm flow and abundant fish populations. For swimmers, there are a few accessible spots along the river where the water is shallow and calm, ideal for a refreshing dip. The Jefferson River’s scenic beauty and serene atmosphere make it a wonderful place to enjoy the outdoors, whether you’re in the water or simply relaxing along its banks.

Geographical Location of Jefferson River

Frequently Asked Questions About Jefferson River and its Water Temperatures

What is the current water temperature in Jefferson River?

The water temperature today in Jefferson River ranges from 42°F (5.6°C) to 43°F (5.9°C).

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

The average water temperature in Jefferson 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 Jefferson River in May?

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

What is the water temperature in Jefferson River in September?

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

Where does Jefferson River flow?

Jefferson River flows through United States (Montana).

Is it possible to swim in the Jefferson River?

Yes, it is possible to swim in the Jefferson River. However, safety is crucial as the river conditions can be unpredictable.