Idaho Falls — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Idaho Falls, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Idaho Falls today is 16.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| SEP 14 | 17.4°C | 17.0°C | |
| SEP 15 | 17.4°C | 17.0°C | |
| SEP 16 | 16.8°C | 17.0°C | |
| SEP 17 | 16.7°C | 17.0°C | |
| SEP 18 | 16.2°C | 17.0°C | |
| SEP 19 | 16.1°C | 17.0°C | |
| SEP 20 | 16.0°C | 17.0°C | |
| SEP 21 | 16.5°C | 17.0°C | |
| SEP 22 | 17.0°C | 16.5°C | |
| SEP 23 | 17.0°C | 16.6°C | |
| SEP 24 | 17.0°C | 16.6°C | |
| SEP 25 | 17.0°C | 16.6°C | |
| SEP 26 | 17.0°C | 16.6°C | |
| SEP 27 | 17.0°C | 16.7°C | |
| SEP 28 | 17.0°C | 16.7°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 | 3°C | 5°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 | 14°C | 19°C | 22°C |
| July | 17°C | 21°C | 26°C |
| August | 17°C | 21°C | 26°C |
| September | 11°C | 17°C | 23°C |
| October | 8°C | 13°C | 16°C |
| November | 3°C | 8°C | 16°C |
| December | 3°C | 5°C | 8°C |
Idaho Falls: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
The Snake River, which flows through Idaho Falls, offers scenic views and various recreational activities, but it’s not widely known for swimming due to its cold water temperatures and strong currents. During the warmer months, typically from late spring to early fall, the river's water temperature can range from 50°F to 65°F (10°C to 18°C), making it quite chilly for most swimmers. These cold temperatures can be refreshing in hot weather but are often too cold for extended swimming.
While swimming in the Snake River is not as popular as other water sports, activities like kayaking, rafting, and fishing are common in this area. The river's strong currents, especially near the falls, also pose safety risks, making swimming less ideal. For those determined to take a dip, it's important to exercise caution and be aware of the river's fast-moving waters and potential hazards, including submerged rocks and varying water levels.
For a more comfortable and safer swimming experience, Idaho Falls residents and visitors often opt for nearby lakes, reservoirs, or public pools, where the water is warmer and calmer. Some of these spots can reach temperatures around 70°F to 75°F (21°C to 24°C) in the summer, providing a more inviting environment for swimming.