Flanagan Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Flanagan Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Flanagan Lake today is 24.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 |
|---|---|---|---|
| JUN 23 | 23.9°C | 20.5°C | |
| JUN 24 | 23.9°C | 20.5°C | |
| JUN 25 | 24.1°C | 20.5°C | |
| JUN 26 | 24.2°C | 20.5°C | |
| JUN 27 | 24.4°C | 20.5°C | |
| JUN 28 | 24.7°C | 20.5°C | |
| JUN 29 | 24.7°C | 20.5°C | |
| JUN 30 | 24.7°C | 20.5°C | |
| JUL 1 | 28.0°C | 24.9°C | |
| JUL 2 | 28.0°C | 25.0°C | |
| JUL 3 | 28.0°C | 25.2°C | |
| JUL 4 | 28.0°C | 25.4°C | |
| JUL 5 | 28.0°C | 25.5°C | |
| JUL 6 | 28.0°C | 25.7°C | |
| JUL 7 | 28.0°C | 25.9°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 | 2°C | 6°C | 11°C |
| April | 6°C | 12°C | 17°C |
| May | 14°C | 19°C | 24°C |
| June | 16°C | 21°C | 25°C |
| July | 23°C | 28°C | 33°C |
| August | 23°C | 27°C | 30°C |
| September | 21°C | 23°C | 26°C |
| October | 14°C | 18°C | 21°C |
| November | 7°C | 12°C | 15°C |
| December | 2°C | 6°C | 9°C |
Flanagan Lake: Water Temperature by Location
Flanagan Lake: Weather Forecast
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Location & Local Information
Public data specifically for Flanagan Lake in Nebraska are limited, but its seasonal surface temperatures are likely similar to other small inland Nebraska reservoirs. In spring the water commonly runs cool, roughly 45–65°F (7–18°C) as runoff and air temperatures are still low. By summer surface readings often climb to about 75–85°F (24–29°C) on warm afternoons in July and August, with shallower bays warming faster. In early fall temperatures typically fall back to 50–68°F (10–20°C) as nights cool. In winter the lake can approach freezing, around 32–39°F (0–4°C), and may ice over at times. Thermal stratification can occur in deeper sections, so lower depths remain colder than the surface.
Swimming at Flanagan Lake is generally permitted at many Nebraska recreation lakes and reservoirs, but allowance depends on local rules, posted signs and current conditions. When allowed, people swim because surface temperatures in midsummer reach comfortable ranges (about 75–85°F / 24–29°C), yet caution is advised: water quality issues such as blue‑green algae, sudden depth changes, submerged hazards and lack of lifeguards can make swimming unsafe. Visitors should follow posted guidance, check for advisories from the managing agency and avoid swimming during algal blooms or after heavy runoff when water quality may be compromised.