Mount Storm Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Mount Storm Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Mount Storm Lake today is 20.4°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 |
|---|---|---|---|
| SEP 13 | 20.8°C | 22.8°C | |
| SEP 14 | 21.0°C | 22.8°C | |
| SEP 15 | 20.9°C | 22.8°C | |
| SEP 16 | 21.0°C | 22.8°C | |
| SEP 17 | 20.1°C | 22.8°C | |
| SEP 18 | 20.1°C | 22.8°C | |
| SEP 19 | 20.4°C | 22.8°C | |
| SEP 20 | 21.3°C | 22.8°C | |
| SEP 21 | 22.8°C | 20.5°C | |
| SEP 22 | 22.8°C | 20.6°C | |
| SEP 23 | 22.8°C | 20.8°C | |
| SEP 24 | 22.8°C | 20.9°C | |
| SEP 25 | 22.8°C | 21.0°C | |
| SEP 26 | 22.8°C | 21.1°C | |
| SEP 27 | 22.8°C | 21.2°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 7°C |
| April | 7°C | 10°C | 14°C |
| May | 10°C | 16°C | 22°C |
| June | 14°C | 18°C | 22°C |
| July | 19°C | 23°C | 26°C |
| August | 18°C | 22°C | 26°C |
| September | 19°C | 23°C | 26°C |
| October | 16°C | 20°C | 23°C |
| November | 3°C | 10°C | 16°C |
| December | 0°C | 6°C | 10°C |
Mount Storm Lake: Water Temperature by Location
Mount Storm Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Mount Storm Lake is a man-made reservoir used primarily as a cooling pond for the adjacent power plant, and its water temperatures reflect both seasonal climate and industrial thermal discharge. In winter the lake commonly cools to roughly 33–45°F (1–7°C). Spring warms into the mid ranges, about 45–65°F (7–18°C). Summer surface temperatures are typically the warmest, often 70–85°F (21–29°C) across much of the basin, and in areas near the plant’s discharge can reach into the upper 80s or low 90s°F (30–33°C) at times. In autumn surface readings usually fall back to about 50–70°F (10–21°C) as air temperatures decline. Temperatures can vary by depth and location, with cooler, deeper water beneath warmer surface layers and localized thermal plumes near outflow structures.
Swimming at Mount Storm Lake is generally not permitted or recommended because the reservoir functions as an industrial cooling pond. Restrictions and signage limit recreational contact due to safety hazards such as warm thermal discharges, variable currents, steep drop-offs, and potential water-quality issues like algal activity where warm water accumulates. Boating and fishing are commonly allowed in regulated areas, but deliberate swimming is discouraged to reduce risks to public health and to protect operational needs of the facility.