Stillwater River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Stillwater River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Stillwater River today is 19.6°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 | 21.2°C | 21.0°C | |
| AUG 25 | 21.1°C | 21.0°C | |
| AUG 26 | 21.2°C | 21.0°C | |
| AUG 27 | 21.2°C | 21.0°C | |
| AUG 28 | 20.1°C | 21.0°C | |
| AUG 29 | 20.5°C | 21.0°C | |
| AUG 30 | 20.2°C | 21.0°C | |
| AUG 31 | 20.1°C | 21.0°C | |
| SEP 1 | 17.6°C | 19.5°C | |
| SEP 2 | 17.6°C | 19.4°C | |
| SEP 3 | 17.6°C | 19.3°C | |
| SEP 4 | 17.6°C | 19.2°C | |
| SEP 5 | 17.6°C | 19.1°C | |
| SEP 6 | 17.6°C | 19.0°C | |
| SEP 7 | 17.6°C | 18.9°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 | 1°C | 6°C | 9°C |
| February | 1°C | 5°C | 9°C |
| March | 2°C | 7°C | 11°C |
| April | 4°C | 10°C | 16°C |
| May | 7°C | 14°C | 21°C |
| June | 12°C | 18°C | 22°C |
| July | 14°C | 20°C | 25°C |
| August | 17°C | 21°C | 25°C |
| September | 11°C | 18°C | 19°C |
| October | 7°C | 12°C | 16°C |
| November | 2°C | 9°C | 16°C |
| December | 1°C | 5°C | 8°C |
Stillwater River: Water Temperature by Location
Stillwater River: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
The Stillwater River, flowing through the mountainous regions of Montana, is known for its scenic beauty and clear, cool waters. The river’s water temperature is typically quite cold, especially in the upper sections where snowmelt from the surrounding mountains feeds into the river. During the summer months, the water temperature can range from 50 to 60°F (10 to 16°C), offering a refreshing but brisk environment for swimming. In the cooler months, temperatures can drop significantly, making swimming even less comfortable, especially in the more remote and high-altitude stretches of the river.
Swimming in the Stillwater River is possible but less common compared to other water activities like fishing, rafting, or kayaking. The river has several sections with calm waters suitable for wading or short swims, but due to the cold temperatures and fast-moving currents in certain areas, it is not typically a primary destination for swimming. However, in slower-moving stretches, particularly in the summer when the water levels are lower, it can be a nice place to cool off. As always, it’s important to be cautious of changing water conditions and potential hazards when swimming in natural rivers, especially in regions with significant mountain runoff.