Two Mile Run Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Two Mile Run Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Two Mile Run Reservoir today is 58°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| MAY 6 | 56°F | 62°F | |
| MAY 7 | 55°F | 62°F | |
| MAY 8 | 55°F | 62°F | |
| MAY 9 | 55°F | 62°F | |
| MAY 10 | 54°F | 62°F | |
| MAY 11 | 53°F | 62°F | |
| MAY 12 | 55°F | 62°F | |
| MAY 13 | 56°F | 62°F | |
| MAY 14 | 62°F | 58°F | |
| MAY 15 | 62°F | 58°F | |
| MAY 16 | 62°F | 59°F | |
| MAY 17 | 62°F | 59°F | |
| MAY 18 | 62°F | 59°F | |
| MAY 19 | 62°F | 59°F | |
| MAY 20 | 62°F | 59°F |
* 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 | 32°F | 38°F | 43°F |
| February | 32°F | 38°F | 45°F |
| March | 32°F | 38°F | 46°F |
| April | 43°F | 51°F | 61°F |
| May | 52°F | 62°F | 72°F |
| June | 63°F | 69°F | 75°F |
| July | 73°F | 77°F | 81°F |
| August | 70°F | 77°F | 84°F |
| September | 66°F | 72°F | 77°F |
| October | 55°F | 61°F | 66°F |
| November | 41°F | 50°F | 57°F |
| December | 36°F | 42°F | 46°F |
Two Mile Run Reservoir: Water Temperature by Location
Two Mile Run Reservoir: Weather Forecast
May 14
May 15
May 16
Location & Local Information
Two Mile Run Reservoir in Pennsylvania experiences the sorts of seasonal water temperatures typical of small, wooded reservoirs in the region. In winter the surface commonly approaches freezing, often 32–40°F (0–4°C) under ice or near-ice conditions. Spring warming moves temperatures into roughly 40–60°F (4–15°C) depending on late-season runoff and air temperatures. By summer the reservoir surface can reach about 65–78°F (18–26°C) on warm, calm days, although deeper water stays cooler. In early autumn temperatures typically fall back into the 50–65°F (10–18°C) range. Actual temperatures vary with depth, inflow, shading, and weather patterns, so localized conditions at the lake can differ from these general seasonal bands.
Swimming at Two Mile Run Reservoir is generally not permitted or recommended for several reasons. Many reservoirs are managed for water supply, flood control, or habitat and thus restrict bathing to protect water quality; additionally, steep drop-offs, cold deep water, submerged hazards and lack of lifeguards create safety risks such as cold-water shock and drowning. While shore-based activities like fishing, hiking and non-motorized boating may be allowed in designated areas, anyone interested in entering the water should follow posted rules and contact the managing agency for the official swimming policy and safety guidance.