Norton Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Norton Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Norton Reservoir today is 20.9°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 |
|---|---|---|---|
| JUN 3 | 17.2°C | 18.9°C | |
| JUN 4 | 17.4°C | 18.9°C | |
| JUN 5 | 19.2°C | 18.9°C | |
| JUN 6 | 20.0°C | 18.9°C | |
| JUN 7 | 20.3°C | 18.9°C | |
| JUN 8 | 20.6°C | 18.9°C | |
| JUN 10 | 20.9°C | 18.9°C | |
| JUN 11 | 18.9°C | 20.8°C | |
| JUN 12 | 18.9°C | 20.7°C | |
| JUN 13 | 18.9°C | 20.6°C | |
| JUN 14 | 18.9°C | 20.5°C | |
| JUN 15 | 18.9°C | 20.4°C | |
| JUN 16 | 18.9°C | 20.3°C | |
| JUN 17 | 18.9°C | 20.2°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 | 5°C | 9°C |
| February | 1°C | 6°C | 11°C |
| March | 0°C | 7°C | 14°C |
| April | 8°C | 12°C | 16°C |
| May | 12°C | 17°C | 22°C |
| June | 16°C | 19°C | 21°C |
| July | 21°C | 24°C | 27°C |
| August | 22°C | 24°C | 27°C |
| September | 20°C | 23°C | 26°C |
| October | 13°C | 17°C | 20°C |
| November | 6°C | 11°C | 15°C |
| December | 4°C | 7°C | 10°C |
Norton Reservoir: Water Temperature by Location
Norton Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Norton Reservoir’s water temperature follows the typical New England seasonal pattern. In winter the surface is often near freezing, roughly 33–40°F (0.5–4°C). Spring brings a steady rise, with temperatures commonly in the 40–65°F range (4–18°C) as the lake thaws and warms. By midsummer the surface usually reaches comfortable levels for recreational use, often around 70–78°F (21–26°C), and on warm spells can approach or briefly exceed about 80–85°F (27–29°C). During fall the water cools again, generally falling back into the 50–65°F range (10–18°C) as air temperatures decline.
Swimming in Norton Reservoir is possible but subject to local rules and seasonal conditions. Municipal authorities typically permit swimming in designated areas when water quality and safety are acceptable, but closures can occur for reasons such as blue‑green algae blooms, elevated bacterial counts, or hazardous conditions. There may be limited or no lifeguard supervision, and shoreline access or facilities can vary, so swimmers should heed posted signs, check current advisories from local health or conservation departments, and be mindful that colder shoulder-season temperatures significantly increase the risk of cold‑water shock.