Yellowstone River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Yellowstone River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Yellowstone River today is 2.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters. 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 |
|---|---|---|---|
| APR 11 | 3.6°C | 9.4°C | |
| APR 12 | 3.6°C | 9.4°C | |
| APR 13 | 3.0°C | 9.4°C | |
| APR 14 | 3.1°C | 9.4°C | |
| APR 15 | 3.1°C | 9.4°C | |
| APR 16 | 3.1°C | 9.4°C | |
| APR 17 | 2.7°C | 9.4°C | |
| APR 19 | 9.4°C | 2.8°C | |
| APR 20 | 9.4°C | 3.1°C | |
| APR 21 | 9.4°C | 3.5°C | |
| APR 22 | 9.4°C | 3.8°C | |
| APR 23 | 9.4°C | 4.2°C | |
| APR 24 | 9.4°C | 4.5°C | |
| APR 25 | 9.4°C | 4.9°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 | 1°C | 5°C | 9°C |
| March | 1°C | 6°C | 11°C |
| April | 2°C | 9°C | 16°C |
| May | 5°C | 13°C | 21°C |
| June | 7°C | 15°C | 22°C |
| July | 12°C | 18°C | 24°C |
| August | 13°C | 18°C | 23°C |
| September | 11°C | 18°C | 19°C |
| October | 6°C | 11°C | 16°C |
| November | 2°C | 10°C | 16°C |
| December | 0°C | 5°C | 8°C |
Yellowstone River: Water Temperature by Location
Yellowstone River: Weather Forecast
April 19
April 20
April 21
April 22
Location & Local Information
Source Confluence of North and South Forks
• location Absaroka Range, Wyoming
Mouth Missouri River
• location McKenzie County, near Buford, North Dakota
Length 692 mi (1,114 km)
The Yellowstone River, one of the longest free-flowing rivers in the United States, flows through Yellowstone National Park and offers a variety of outdoor activities, including swimming. Water temperatures in the river can be quite cold, especially in the upper stretches, where snowmelt from the surrounding mountains feeds into the river. During the summer months, the water temperature typically ranges from 45°F to 70°F (7°C to 21°C), but it can still feel chilly due to the river's cold mountain origins, particularly in spring and early summer.
Swimming in the Yellowstone River is generally not recommended in many sections due to the strong currents and cold water temperatures, which can be dangerous for swimmers. However, there are some calmer and more shallow sections of the river, particularly near Yellowstone Lake, where swimming might be more feasible. These areas tend to warm up slightly during the summer, making for a more comfortable experience. Visitors often enjoy wading in these shallower parts or floating down the river in a raft or kayak rather than swimming directly in the water.
The river is more well-known for its opportunities for rafting, fishing, and wildlife watching rather than for swimming. However, the surrounding beauty of Yellowstone National Park, including its geothermal features and wildlife, make the Yellowstone River an essential part of the outdoor experience in the area. For those looking to swim, it's important to always assess the water conditions and choose safe, calm areas away from fast-moving currents or deep sections of the river.