Frances Slocum Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Frances Slocum Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Frances Slocum Lake today is 20.3°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 14 | 20.7°C | 22.5°C | |
| SEP 15 | 21.3°C | 22.5°C | |
| SEP 16 | 20.8°C | 22.5°C | |
| SEP 17 | 20.1°C | 22.5°C | |
| SEP 18 | 20.5°C | 22.5°C | |
| SEP 19 | 20.4°C | 22.5°C | |
| SEP 20 | 20.8°C | 22.5°C | |
| SEP 21 | 20.3°C | 22.5°C | |
| SEP 22 | 22.5°C | 20.4°C | |
| SEP 23 | 22.5°C | 20.5°C | |
| SEP 24 | 22.5°C | 20.6°C | |
| SEP 25 | 22.5°C | 20.7°C | |
| SEP 26 | 22.5°C | 20.9°C | |
| SEP 27 | 22.5°C | 21.0°C | |
| SEP 28 | 22.5°C | 21.1°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 | 4°C | 7°C |
| February | 0°C | 4°C | 7°C |
| March | 0°C | 4°C | 7°C |
| April | 5°C | 11°C | 17°C |
| May | 11°C | 16°C | 21°C |
| June | 18°C | 21°C | 24°C |
| July | 20°C | 25°C | 29°C |
| August | 21°C | 24°C | 27°C |
| September | 19°C | 23°C | 26°C |
| October | 12°C | 18°C | 24°C |
| November | 5°C | 11°C | 16°C |
| December | 0°C | 6°C | 10°C |
Frances Slocum Lake: Water Temperature by Location
Frances Slocum Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Frances Slocum Lake in northeastern Pennsylvania experiences wide seasonal variation in water temperature typical of small, temperate reservoirs. In winter the surface often hovers around freezing, roughly 32–39°F (0–4°C), and ice formation is common. Spring temperatures climb through the 40s and 50s°F as runoff and warming air raise the surface into about 4–15°C. By mid to late summer the lake commonly reaches its warmest, with surface readings frequently between 65–80°F (18–27°C) on sunny days, though shallow bays can be slightly warmer. In autumn the water cools again into the 45–60°F range (7–16°C) as air temperatures fall and stratification breaks down.
Swimming at Frances Slocum Lake is not offered as a supervised recreational activity; the area does not have a designated swimming beach or lifeguards, and the reservoir’s management and safety policies discourage open water bathing. Water level fluctuations, submerged structures and vegetation, and the absence of regular lifeguard coverage are the main reasons visitors are advised against swimming. Visitors can still enjoy boating, fishing, hiking and shoreline picnicking, but anyone considering entering the water should be aware of local rules and personal safety risks before doing so.