Shawnee Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Shawnee Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Shawnee Lake today is 23.2°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 |
|---|---|---|---|
| AUG 25 | 24.3°C | 24.5°C | |
| AUG 26 | 24.1°C | 24.5°C | |
| AUG 27 | 23.2°C | 24.5°C | |
| AUG 28 | 22.9°C | 24.5°C | |
| AUG 29 | 23.0°C | 24.5°C | |
| AUG 30 | 23.0°C | 24.5°C | |
| AUG 31 | 22.9°C | 24.5°C | |
| SEP 1 | 23.2°C | 22.0°C | |
| SEP 2 | 22.0°C | 23.1°C | |
| SEP 3 | 22.0°C | 23.1°C | |
| SEP 4 | 22.0°C | 23.0°C | |
| SEP 5 | 22.0°C | 23.0°C | |
| SEP 6 | 22.0°C | 22.9°C | |
| SEP 7 | 22.0°C | 22.8°C | |
| SEP 8 | 22.0°C | 22.8°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 | 4°C | 6°C |
| February | 1°C | 4°C | 7°C |
| March | 1°C | 6°C | 11°C |
| April | 6°C | 11°C | 15°C |
| May | 12°C | 18°C | 22°C |
| June | 17°C | 21°C | 24°C |
| July | 21°C | 25°C | 27°C |
| August | 20°C | 25°C | 29°C |
| September | 19°C | 22°C | 25°C |
| October | 13°C | 16°C | 19°C |
| November | 6°C | 12°C | 17°C |
| December | 2°C | 5°C | 8°C |
Shawnee Lake: Water Temperature by Location
Shawnee Lake: Weather Forecast
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Shawnee Lake in Pennsylvania experiences the seasonal temperature swings typical of small inland reservoirs in the region. Surface water in winter often approaches near‑freezing conditions, roughly 32–40°F (0–4°C), while spring brings a steady rise into the 45–65°F (7–18°C) range as the lake mixes and warms. Peak summer surface temperatures commonly reach about 70–80°F (21–27°C), and occasionally into the low 80s°F (28–29°C) during heat waves. By autumn the surface cools back to roughly 50–65°F (10–18°C) as stratification breaks down and the lake returns toward winter temperatures. Deeper water remains substantially colder year‑round because of thermal stratification, so actual experience of temperature can vary with depth and location on the lake.
Swimming opportunities at Shawnee Lake depend on local management and season; where public access and designated swim areas are provided, swimming is typically allowed during the warm months when lifeguards or clear signage indicate it is safe. Restrictions may be in place in other areas because of private ownership, water quality considerations, protection of habitat, or safety hazards such as steep drop‑offs and underwater structure. Visitors should follow posted rules, check local advisories for water quality, and be mindful that even in summer, sudden cold pockets at depth can pose risks.