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Clark Fork River
Clark Fork River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Clark Fork 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 Clark Fork River
42°F
TODAY
42°F
YESTERDAY
45°F
A WEEK AGO
As of today, the minimum water temperature in the Clark Fork 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 Clark Fork River Over the Last 30 Days
Today the water temperature in Clark Fork River is lower than the same day in previous years. The water temperature range here in November is from 37°F to 61°F. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Clark Fork 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
| Date | Current | Average | Forecast |
|---|---|---|---|
| Oct 29 | 45°F | 53°F | |
| Oct 30 | 45°F | 53°F | |
| Oct 31 | 44°F | 53°F | |
| Nov 1 | 45°F | 47°F | |
| Nov 2 | 44°F | 47°F | |
| Nov 3 | 44°F | 47°F | |
| Nov 4 | 42°F | 47°F | |
| Nov 5 | 42°F | 47°F | |
| Nov 6 | 47°F | 42°F | |
| Nov 7 | 47°F | 43°F | |
| Nov 8 | 47°F | 43°F | |
| Nov 9 | 47°F | 43°F | |
| Nov 10 | 47°F | 43°F | |
| Nov 11 | 47°F | 43°F | |
| Nov 12 | 47°F | 44°F | |
| Nov 13 | 47°F | 44°F |
Water Temperature Ranges in Clark Fork River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 40°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 40°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 32°F | 42°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 39°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 62°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 61°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 60°F | 68°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 45°F | 53°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Clark Fork River
Water Temperature in Cities and Towns on Clark Fork River
Clark Fork River Weather
NOVEMBER 6
41°F / 50°F
moderate rainrain: 90% | wind: 12 mph
NOVEMBER 7
34°F / 45°F
heavy intensity snow fallrain: 91% | wind: 14 mph
NOVEMBER 8
28°F / 46°F
overcastrain: 79% | wind: 9 mph
NOVEMBER 9
28°F / 50°F
overcastrain: 6% | wind: 2 mph
NOVEMBER 10
34°F / 54°F
overcastrain: 26% | wind: 3 mph
Water Temperature in Clark Fork River: General Trends and Swimming Opportunities
Source Silver Bow Creek
Mouth Lake Pend Oreille
• location Bonner County, Idaho
Length 310 mi (500 km)
The Clark Fork River, flowing through the western part of Montana, is known for its scenic beauty and its wide range of outdoor recreational opportunities. During the warmer months, especially from late spring to early fall, the water temperature in the river tends to hover around 15°C (59°F) to 20°C (68°F), depending on the weather and the region of the river. These temperatures are cool, but still refreshing enough for swimming, especially on hotter days when the river’s clear waters offer a perfect respite. The colder months bring a noticeable drop in temperature, making swimming impractical and less enjoyable.
For those looking to swim in the Clark Fork River, there are several spots along its course that are more suitable. Areas with slower currents and wider stretches, such as near popular recreation areas like the Alberton Gorge or near the town of Missoula, tend to be ideal for a swim. However, it’s important to note that certain sections of the river can have fast-moving water, especially after heavy rainfall or during spring runoff, which can make swimming hazardous. Swimmers should always check water conditions and be aware of local advisories to ensure their safety.
While the river is a great place for activities such as kayaking, fishing, and rafting, swimming is most enjoyable in the calmer, warmer areas during the summer months. The Clark Fork River offers a perfect blend of outdoor fun and natural beauty, making it a popular destination for those seeking a day of relaxation in the water. During the summer, the river is a great place to cool off, though caution should always be taken due to the varying water conditions and temperatures along its path.
Geographical Location of Clark Fork River
Nearby Rivers
Frequently Asked Questions About Clark Fork River and its Water Temperatures
What is the current water temperature in Clark Fork River?
The water temperature today in Clark Fork River ranges from 42°F (5.8°C) to 51°F (10.5°C).
What is the water temperature in Clark Fork River during the summer months?
The average water temperature in Clark Fork 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 Clark Fork River in May?
The average water temperature in Clark Fork River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Clark Fork River in September?
The average water temperature in Clark Fork River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does Clark Fork River flow?
Clark Fork River flows through United States (Montana, Idaho).
Is it possible to swim in the Clark Fork River?
Yes, it is possible to swim in the Clark Fork River. However, it is essential to ensure the safety conditions such as water flow and temperature before taking a plunge.
What major cities are located on Clark Fork River?
Cities along the course of Clark Fork River include Missoula (Montana).

