Upper Greenwood Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Upper Greenwood Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Upper Greenwood Lake today is 15.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| OCT 5 | 18.1°C | 15.5°C | |
| OCT 6 | 17.4°C | 15.5°C | |
| OCT 7 | 17.4°C | 15.5°C | |
| OCT 8 | 16.6°C | 15.5°C | |
| OCT 9 | 16.0°C | 15.5°C | |
| OCT 10 | 16.3°C | 15.5°C | |
| OCT 11 | 16.0°C | 15.5°C | |
| OCT 12 | 16.2°C | 15.5°C | |
| OCT 13 | 15.5°C | 15.4°C | |
| OCT 14 | 15.5°C | 15.4°C | |
| OCT 15 | 15.5°C | 15.4°C | |
| OCT 16 | 15.5°C | 15.4°C | |
| OCT 17 | 15.5°C | 15.4°C | |
| OCT 18 | 15.5°C | 15.4°C | |
| OCT 19 | 15.5°C | 15.4°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 | 5°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 4°C | 7°C |
| April | 4°C | 9°C | 15°C |
| May | 11°C | 15°C | 19°C |
| June | 17°C | 20°C | 24°C |
| July | 20°C | 25°C | 30°C |
| August | 22°C | 26°C | 29°C |
| September | 19°C | 23°C | 27°C |
| October | 12°C | 16°C | 19°C |
| November | 5°C | 9°C | 12°C |
| December | 1°C | 4°C | 7°C |
Upper Greenwood Lake: Water Temperature by Location
Upper Greenwood Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Upper Greenwood Lake experiences pronounced seasonal changes in water temperature. In spring the surface typically runs about 45–65°F (7–18°C) as the lake stratifies and warms; by early summer temperatures commonly reach 65–75°F (18–24°C). The warmest period is mid to late summer when surface readings often climb into the mid to high 70s°F, occasionally reaching 80°F or a bit above (24–27+°C), making the water most comfortable for casual swimming. In autumn the lake cools again to roughly 50–70°F (10–21°C) depending on air temperatures, and in winter surface water can approach freezing, generally around 33–40°F (1–4°C) where ice is present. Local conditions such as recent weather, wind, and depth can shift these values from week to week.
Swimming in Upper Greenwood Lake is permitted in appropriate areas, but access and rules are set by shoreline property owners and the lake association, so not all shorelines are open to the public. Designated beaches and association-managed areas typically allow swimming during posted hours and may provide lifeguards or post safety advisories; restrictions exist to protect water quality, swimmer safety, and private property rights. Visitors should check current water-quality notices, posted rules, and seasonal hours before entering the water.