Clark Fork River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Clark Fork River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Clark Fork River today is 19.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 24 | 23.0°C | 20.5°C | |
| AUG 25 | 21.5°C | 20.5°C | |
| AUG 26 | 21.4°C | 20.5°C | |
| AUG 27 | 21.5°C | 20.5°C | |
| AUG 28 | 21.3°C | 20.5°C | |
| AUG 29 | 21.3°C | 20.5°C | |
| AUG 30 | 21.3°C | 20.5°C | |
| AUG 31 | 19.2°C | 20.5°C | |
| SEP 1 | 15.5°C | 19.0°C | |
| SEP 2 | 15.5°C | 18.8°C | |
| SEP 3 | 15.5°C | 18.6°C | |
| SEP 4 | 15.5°C | 18.5°C | |
| SEP 5 | 15.5°C | 18.3°C | |
| SEP 6 | 15.5°C | 18.1°C | |
| SEP 7 | 15.5°C | 17.9°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 0°C | 6°C | 11°C |
| April | 4°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 11°C | 17°C | 22°C |
| July | 13°C | 19°C | 25°C |
| August | 17°C | 21°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 7°C | 12°C | 16°C |
| November | 3°C | 8°C | 16°C |
| December | 3°C | 5°C | 8°C |
Clark Fork River: Water Temperature by Location
Clark Fork River: Weather Forecast
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Location & Local Information
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.