Snoqualmie River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Snoqualmie River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Snoqualmie River today is 21.6°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 | 20.7°C | 21.4°C | |
| AUG 5 | 20.7°C | 21.4°C | |
| AUG 6 | 19.0°C | 21.4°C | |
| AUG 7 | 21.5°C | 21.4°C | |
| AUG 8 | 21.6°C | 21.4°C | |
| AUG 9 | 21.9°C | 21.4°C | |
| AUG 10 | 21.9°C | 21.4°C | |
| AUG 11 | 21.8°C | 21.4°C | |
| AUG 12 | 21.4°C | 21.6°C | |
| AUG 13 | 21.4°C | 21.6°C | |
| AUG 14 | 21.4°C | 21.6°C | |
| AUG 15 | 21.4°C | 21.6°C | |
| AUG 16 | 21.4°C | 21.6°C | |
| AUG 17 | 21.4°C | 21.5°C | |
| AUG 18 | 21.4°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 | 3°C | 4°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 3°C | 7°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 | 24°C |
| August | 17°C | 21°C | 23°C |
| September | 11°C | 18°C | 19°C |
| October | 8°C | 13°C | 16°C |
| November | 3°C | 8°C | 16°C |
| December | 3°C | 5°C | 8°C |
Snoqualmie River: Water Temperature by Location
Snoqualmie River: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Source Confluence of the Middle and North Forks
Mouth Snohomish River
Length 45 mi (72 km)
The Snoqualmie River, flowing through the lush forests of Washington State, is a beautiful and fast-moving river. The water temperature is quite cold year-round, influenced by its source in the Cascade Mountains and the melting snow from higher elevations. During the summer, the river's water temperature typically hovers around 50 to 60°F (10 to 16°C), which can feel quite chilly for swimming. In the winter, the water temperature drops even further, making swimming conditions even less favorable.
While the Snoqualmie River offers stunning views and opportunities for various outdoor activities, swimming is not the most popular option due to the river's cold temperatures and strong currents, particularly in the faster-moving sections. However, in slower, calmer stretches, such as near designated parks or recreation areas, swimming and wading can be more enjoyable. For those seeking adventure, the river is well known for kayaking, rafting, and fishing, as its clear waters and surrounding scenery provide a great backdrop for outdoor exploration. If you do choose to swim, it's essential to be mindful of water levels and currents, which can change rapidly.