New Croton Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in New Croton Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in New Croton Reservoir today is 20.3°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 2 | 19.6°C | 19.4°C | |
| JUN 3 | 18.5°C | 19.4°C | |
| JUN 4 | 18.9°C | 19.4°C | |
| JUN 5 | 19.2°C | 19.4°C | |
| JUN 6 | 19.3°C | 19.4°C | |
| JUN 7 | 20.1°C | 19.4°C | |
| JUN 8 | 20.1°C | 19.4°C | |
| JUN 10 | 19.4°C | 20.3°C | |
| JUN 11 | 19.4°C | 20.2°C | |
| JUN 12 | 19.4°C | 20.2°C | |
| JUN 13 | 19.4°C | 20.1°C | |
| JUN 14 | 19.4°C | 20.1°C | |
| JUN 15 | 19.4°C | 20.0°C | |
| JUN 16 | 19.4°C | 20.0°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 | 10°C | 16°C |
| May | 11°C | 15°C | 20°C |
| June | 17°C | 19°C | 22°C |
| July | 22°C | 26°C | 30°C |
| August | 22°C | 26°C | 29°C |
| September | 19°C | 23°C | 27°C |
| October | 12°C | 16°C | 20°C |
| November | 6°C | 9°C | 12°C |
| December | 1°C | 4°C | 7°C |
New Croton Reservoir: Water Temperature by Location
New Croton Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
The New Croton Reservoir, part of New York City’s Croton watershed in Westchester County, shows pronounced seasonal temperature shifts typical of northeastern U.S. reservoirs. Surface temperatures in summer commonly reach roughly 70–78°F (21–26°C), though deeper water remains much cooler, often 45–55°F (7–13°C) due to thermal stratification. In spring the water warms from about 40–60°F (4–15°C) as ice melts and air temperatures climb; autumn cooling brings surface values down to roughly 50–65°F (10–18°C). Winter conditions can produce near-freezing surface temperatures around 32–40°F (0–4°C), with ice forming in colder periods. These approximate ranges vary with weather, depth, and inflow, so localized spots and depths can be substantially warmer or colder than the surface readings.
Swimming in the New Croton Reservoir is not permitted because the impoundment is part of New York City’s drinking water supply and is subject to strict protections for water quality, security, and public health. Restrictions help prevent contamination, preserve treatment standards, and reduce safety risks associated with cold, deep water and limited lifeguard coverage. Recreational use of watershed lands and water access points is therefore regulated, and any permitted activities are controlled to ensure the integrity of the municipal water system.