Stump Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Stump Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Stump Lake today is 4.2°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 | 1.9°C | 10.5°C | |
| APR 12 | 2.2°C | 10.5°C | |
| APR 13 | 2.9°C | 10.5°C | |
| APR 14 | 3.4°C | 10.5°C | |
| APR 15 | 4.2°C | 10.5°C | |
| APR 16 | 3.7°C | 10.5°C | |
| APR 17 | 4.3°C | 10.5°C | |
| APR 18 | 4.2°C | 10.5°C | |
| APR 19 | 10.5°C | 4.5°C | |
| APR 20 | 10.5°C | 4.8°C | |
| APR 21 | 10.5°C | 5.1°C | |
| APR 22 | 10.5°C | 5.5°C | |
| APR 23 | 10.5°C | 5.8°C | |
| APR 24 | 10.5°C | 6.1°C | |
| APR 25 | 10.5°C | 6.4°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 | 1°C | 7°C | 12°C |
| February | 0°C | 8°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 1°C | 11°C | 20°C |
| May | 6°C | 14°C | 21°C |
| June | 14°C | 18°C | 22°C |
| July | 17°C | 20°C | 23°C |
| August | 19°C | 24°C | 28°C |
| September | 16°C | 19°C | 22°C |
| October | 5°C | 11°C | 16°C |
| November | 2°C | 6°C | 9°C |
| December | 1°C | 5°C | 7°C |
Stump Lake: Water Temperature by Location
Stump Lake: Weather Forecast
April 19
April 20
April 21
April 22
April 23
Location & Local Information
Stump Lake in North Dakota typically experiences cold winters and warm summers. Surface water temperatures in midwinter commonly sit near freezing, roughly 32°F (0°C) with lake ice present. During spring thaw temperatures rise from the 40s to 60s°F (4–16°C) as the lake mixes and warms. Summer surface readings often reach the 70s to low 80s°F (21–28°C) on hot days, though deeper water remains cooler. In autumn the surface cools back through the 60s and 50s into the 40s°F (15–5°C) before refreezing. Actual temperatures vary year to year based on air temperature, wind, depth, and water clarity; shallow bays warm and cool faster than the main basin.
Swimming is generally allowed during the ice‑free season, and people commonly wade, swim, and boat from shore, but formal lifeguards are typically not provided. Access is determined by local land and park regulations, so visitors should heed posted advisories. Natural factors such as cold spring and early fall temperatures, aquatic vegetation, muddy or uneven bottoms, fluctuating water levels, and occasional algal blooms can limit safe swimming. For safety, swimmers should consider water temperature (which affects hypothermia risk), avoid areas with visible blue‑green algae, and exercise caution in unguarded open water.