Summit Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Summit Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Summit Lake today is 21.4°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 15 | 22.7°C | 24.5°C | |
| SEP 16 | 22.8°C | 24.5°C | |
| SEP 17 | 22.7°C | 24.5°C | |
| SEP 18 | 21.4°C | 24.5°C | |
| SEP 19 | 21.1°C | 24.5°C | |
| SEP 20 | 21.4°C | 24.5°C | |
| SEP 21 | 22.6°C | 24.5°C | |
| SEP 22 | 22.4°C | 24.5°C | |
| SEP 23 | 24.5°C | 21.6°C | |
| SEP 24 | 24.5°C | 21.7°C | |
| SEP 25 | 24.5°C | 21.9°C | |
| SEP 26 | 24.5°C | 22.0°C | |
| SEP 27 | 24.5°C | 22.2°C | |
| SEP 28 | 24.5°C | 22.3°C | |
| SEP 29 | 24.5°C | 22.5°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 | 0°C | 2°C | 4°C |
| February | 1°C | 6°C | 10°C |
| March | 1°C | 6°C | 12°C |
| April | 7°C | 12°C | 16°C |
| May | 13°C | 18°C | 24°C |
| June | 16°C | 21°C | 26°C |
| July | 24°C | 29°C | 33°C |
| August | 23°C | 27°C | 30°C |
| September | 21°C | 25°C | 28°C |
| October | 14°C | 18°C | 22°C |
| November | 6°C | 12°C | 17°C |
| December | 1°C | 6°C | 9°C |
Summit Lake: Water Temperature by Location
Summit Lake: Weather Forecast
September 24
September 25
September 26
September 27
Location & Local Information
Summit Lake in Nebraska follows the seasonal warming and cooling typical of shallow Midwestern reservoirs. In spring, surface temperatures generally run from about 45–65°F (7–18°C) as snowmelt and cool rains keep the water brisk. By mid to late summer the lake often warms to roughly 70–85°F (21–29°C) on the surface, with the warmest readings in August on calm, sunny days. In early fall temperatures usually fall back into the 50–70°F (10–21°C) range as air temperatures cool, and in winter the lake can approach freezing, roughly 32–40°F (0–4°C), often forming ice where conditions allow.
Recreational swimming is typically allowed during the ice‑free months because Summit Lake is used for multiple outdoor activities, including bathing and boating, and is managed to support public recreation. That said, access depends on local management, posted rules and current water‑quality conditions: swimming may be restricted or discouraged when harmful algal blooms occur, bacterial counts are high, heavy boat traffic creates hazards, or ice is present. Lifeguards are not commonly provided at smaller Nebraska lakes, so swimmers should heed signage, wear life jackets as appropriate, and check current advisories from the agency that manages the lake before entering the water.