Highland Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Highland Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Highland Lake today is 17.1°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 |
|---|---|---|---|
| JUN 3 | 13.0°C | 17.0°C | |
| JUN 4 | 13.9°C | 17.0°C | |
| JUN 5 | 14.7°C | 17.0°C | |
| JUN 6 | 14.9°C | 17.0°C | |
| JUN 7 | 17.4°C | 17.0°C | |
| JUN 8 | 17.5°C | 17.0°C | |
| JUN 11 | 17.0°C | 17.1°C | |
| JUN 12 | 17.0°C | 17.1°C | |
| JUN 13 | 17.0°C | 17.1°C | |
| JUN 14 | 17.0°C | 17.1°C | |
| JUN 15 | 17.0°C | 17.1°C | |
| JUN 16 | 17.0°C | 17.1°C | |
| JUN 17 | 17.0°C | 17.1°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 | 2°C | 4°C |
| February | 0°C | 3°C | 5°C |
| March | 0°C | 4°C | 8°C |
| April | 5°C | 8°C | 11°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 17°C | 21°C |
| July | 18°C | 24°C | 29°C |
| August | 21°C | 24°C | 27°C |
| September | 19°C | 23°C | 26°C |
| October | 14°C | 17°C | 19°C |
| November | 8°C | 12°C | 15°C |
| December | 3°C | 6°C | 9°C |
Highland Lake: Water Temperature by Location
Highland Lake: Weather Forecast
June 9
June 10
June 11
June 12
Location & Local Information
Highland Lake in Connecticut follows the familiar seasonal rhythm of New England lakes, with surface water temperatures that vary considerably through the year. In winter the lake typically approaches freezing, with temperatures around 32–39°F (0–4°C) and often developing ice cover. Spring brings a gradual warming, roughly 40–60°F (4–15°C) as the ice breaks up and the water stratifies. By late spring and summer the surface commonly reaches a comfortable range for recreation, about 70–80°F (21–27°C) on warm days, sometimes briefly higher during heat waves. In autumn the water cools again to roughly 50–65°F (10–18°C) as air temperatures fall and the lake mixes.
Swimming is generally possible at Highland Lake during the warmer months where access is permitted, particularly from public beaches, docks or private shorefront properties; the summer temperature range makes open-water swimming comfortable for many. Whether swimming is allowed at a specific spot depends on local rules, ownership and safety considerations — some areas may be closed because of boat traffic, water-quality advisories such as algal blooms, or seasonal hazards. In winter swimming is unsafe except for experienced, properly equipped cold-water swimmers because of near-freezing water and ice. Always check local signs and advisories before entering the water.