Jefferson River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Jefferson River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Jefferson River today is 22.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 4 | 22.1°C | 19.7°C | |
| AUG 5 | 22.5°C | 19.7°C | |
| AUG 6 | 21.4°C | 19.7°C | |
| AUG 7 | 22.0°C | 19.7°C | |
| AUG 8 | 22.0°C | 19.7°C | |
| AUG 9 | 22.0°C | 19.7°C | |
| AUG 10 | 21.9°C | 19.7°C | |
| AUG 11 | 22.1°C | 19.7°C | |
| AUG 12 | 19.7°C | 22.3°C | |
| AUG 13 | 19.7°C | 22.1°C | |
| AUG 14 | 19.7°C | 22.0°C | |
| AUG 15 | 19.7°C | 21.9°C | |
| AUG 16 | 19.7°C | 21.7°C | |
| AUG 17 | 19.7°C | 21.6°C | |
| AUG 18 | 19.7°C | 21.5°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 | 5°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 12°C | 17°C | 22°C |
| July | 13°C | 19°C | 25°C |
| August | 16°C | 20°C | 24°C |
| September | 11°C | 18°C | 19°C |
| October | 5°C | 11°C | 16°C |
| November | 0°C | 8°C | 16°C |
| December | 1°C | 5°C | 8°C |
Jefferson River: Water Temperature by Location
Jefferson River: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
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.