April weather forecastCold Spring Harbor, NY

April

Weather in April

April is a cool spring month in Cold Spring Harbor, New York, with an average temperature varying between 45°F (7.2°C) and 54°F (12.2°C).

Temperature

An increase in the average high-temperature marks April, moving from March's chilly 44.4°F (6.9°C) to a cool 54°F (12.2°C). Cold Spring Harbor records a slight downturn in temperature to an average of 45°F (7.2°C) during April nights.

Humidity

In April, the average relative humidity is 73%.

Rainfall

In Cold Spring Harbor, during April, the rain falls for 13.8 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 152.5 rainfall days, and 35.04" (890mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Cold Spring Harbor. April is the last month it regularly snows. During 0.2 snowfall days, in April, Cold Spring Harbor aggregates 0.04" (1mm) of snow. Throughout the year, there are 15.5 snowfall days, and 5.71" (145mm) of snow is accumulated.

Ocean temperature

In Cold Spring Harbor, in April, the average water temperature is 45.3°F (7.4°C).
Note: Swimming in 45.3°F (7.4°C) poses a severe threat. Even short exposure to 55.4°F (13°C) is chilling, and going below 50°F (10°C) can cause breathing irregularities and intense cold shock, based on one's stamina.

Daylight

The average length of the day in April is 13h and 20min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:52 am and sunset at 7:49 pm EDT.

Sunshine

The average sunshine in April is 8.6h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 during April translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. Around midday, solar radiation is most harmful; hence, exposure should be limited. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.

Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In April, the average high-temperature and low-temperature are 54°F (12.2°C) and 45°F (7.2°C) respectively.

In Cold Spring Harbor, the average relative humidity in April is 73%.

In Cold Spring Harbor, New York, in April, during 13.8 rainfall days, 2.87" (73mm) of precipitation is typically accumulated.

April is the last month it regularly snows. During 0.2 snowfall days, in April, Cold Spring Harbor aggregates 0.04" (1mm) of snow.

In Cold Spring Harbor, in April, the average water temperature is 45.3°F (7.4°C). Swimming in 45.3°F (7.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

The average day length in April is 13h and 20min.

In April, on the first day of the month, sunrise is at 6:35 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 7:49 pm EDT.

In Cold Spring Harbor, the average sunshine duration in April is 8.6h.

In Cold Spring Harbor, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

44.4°F

54°F

63.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.1mph

11.3mph

9.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

2.9

0.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

17.5

14.9

13.7

Average UV index

Average cloud cover

Average visibility

Average temperature in April
Cold Spring Harbor, NY

Average high temperature in April: 54°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37°F).

Average low temperature in April: 45°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).

Average pressure in April
Cold Spring Harbor, NY

Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
Cold Spring Harbor, NY

Average wind speed in April: 10.6mph

The windiest month (with the highest average wind speed) is January (12.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in April
Cold Spring Harbor, NY

Average humidity in April: 73%

The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).

Average rainfall in April
Cold Spring Harbor, NY

Average rainfall in April: 2.87"

The wettest month (with the highest rainfall) is July (4.09").
The driest month (with the least rainfall) is January (2.09").

Average rainfall days in April
Cold Spring Harbor, NY

Average rainfall days in April: 13.8 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in April
Cold Spring Harbor, NY

Average snowfall in April: 0.04"

The month with the highest snowfall is March (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in April
Cold Spring Harbor, NY

Average snowfall days in April: 0.2 days

The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in April
Cold Spring Harbor, NY

Average sea temperature in April: 45.4°F

The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in April /
Average sunshine in April
Cold Spring Harbor, NY

Average daylight in April: 13h and 18min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in April: 8h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in April
Cold Spring Harbor, NY

Average sunshine days in April: 14.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.4 days).

Average UV index in April
Cold Spring Harbor, NY

Average UV index in April: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in April
Cold Spring Harbor, NY

Average cloud cover in April: 43

The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in April
Cold Spring Harbor, NY

Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).