Climate and monthly weather forecast
Yaphank, NY

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Weather in January

January, like December, in Yaphank, New York, is an icy winter month, with an average temperature fluctuating between 30.6°F (-0.8°C) and 38.7°F (3.7°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 38.7°F (3.7°C) and a low of 30.6°F (-0.8°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Yaphank, New York, with an average temperature varying between 39.6°F (4.2°C) and 31.5°F (-0.3°C). Yaphank notes an average high-temperature of a still icy 39.6°F (4.2°C) in February, displaying minor variation from January. Weather in February »

Weather in March

March, the first month of the spring in Yaphank, is a frosty month, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 43.3°F (6.3°C). Entering March, the average high-temperature is recorded at a chilly 43.3°F (6.3°C), exhibiting a minimal shift from February's 39.6°F (4.2°C). Weather in March »

Weather in April

April in Yaphank, New York, is a cool spring month, with an average temperature fluctuating between 44.6°F (7°C) and 51.4°F (10.8°C). April's arrival is noted with a slight increase in the average high-temperature, moving from a chilly 43.3°F (6.3°C) in March to a cool 51.4°F (10.8°C). Weather in April »

Weather in May

May, the last month of the spring in Yaphank, is a moderate month, with an average temperature fluctuating between 54.1°F (12.3°C) and 60.4°F (15.8°C). In Yaphank, the average high-temperature in May rises, from a fresh 51.4°F (10.8°C) in April, to a moderate 60.4°F (15.8°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Yaphank, New York, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 69.3°F (20.7°C). June's onset is marked by a subtle temperature increase, moving from a moderate 60.4°F (15.8°C) in May to a pleasant 69.3°F (20.7°C). Weather in June »

Weather in July

July is a moderately hot summer month in Yaphank, New York, with an average temperature fluctuating between 71.4°F (21.9°C) and 76.8°F (24.9°C). Yaphank's transition into July is marked by a minor temperature shift, moving from an agreeable 69.3°F (20.7°C) in June to a moderately hot 76.8°F (24.9°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Yaphank, New York, with an average temperature varying between 77.5°F (25.3°C) and 71.4°F (21.9°C). Yaphank experiences its highest temperatures in August, with an average peak of 77.5°F (25.3°C) and a low of 71.4°F (21.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Yaphank, New York, with an average temperature fluctuating between 65.3°F (18.5°C) and 71.4°F (21.9°C). With the arrival of September, Yaphank experiences a modest decline in average high-temperatures, transitioning from a warm 77.5°F (25.3°C) in August to an agreeable 71.4°F (21.9°C). Weather in September »

Weather in October

October, like September, in Yaphank, New York, is another refreshing autumn month, with an average temperature ranging between min 55.9°F (13.3°C) and max 62.6°F (17°C). The onset of October entails a subtle temperature shift, as the average high-temperature eases from an agreeable 71.4°F (21.9°C) in September to a refreshing 62.6°F (17°C). Weather in October »

Weather in November

November, the last month of the autumn in Yaphank, is another cool month, with an average temperature ranging between min 45.5°F (7.5°C) and max 52.5°F (11.4°C). A shift in Yaphank's weather is observed as October turns into November, with the average high temperature reducing from a comfortable 62.6°F (17°C) to a fresh 52.5°F (11.4°C). Weather in November »

Weather in December

December, the first month of the winter in Yaphank, is still a chilly month, with temperature in the range of an average high of 44.8°F (7.1°C) and an average low of 37°F (2.8°C). A modest decline in the average high-temperature is seen during December, decreasing from a cool 52.5°F (11.4°C) in November to a chilly 44.8°F (7.1°C). Weather in December »
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

January, noted for its average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 30.6°F (-0.8°C), is considered the coldest month.

What is the driest month?

The months with the least rainfall are January, February and September Rain falls for 10.1 days and accumulates 2.01" (51mm) of rain.

How many days does it rain?

In Yaphank, during the entire year, the rain falls for 156.2 days and collects up to 30.2" (767mm) of precipitation.

When does it snow?

January through April, November and December are months with snowfall.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 5.3 days and accumulates 1.5" (38mm) of snow.

How many days does it snow?

In Yaphank, during the entire year, snow falls for 17.9 days and aggregates up to 4.57" (116mm) of snow.

When is the lowest UV index in Yaphank?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the month with the least sunshine?

The month with the least sunshine in Yaphank is February, with an average of 4.8h of sunshine.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the most humid month?

With an average relative humidity of 80%, May is the most humid month.

When it does not snow?

In Yaphank, snow does not fall in May through October.

When are the longest days?

June has the longest days of the year, with an average of 15h and 6min of daylight.

When is the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the month with the most sunshine?

July and August, with an average of 10.8h of sunshine, are months with the most sunshine.

What is the warmest month?

The highest temperatures are recorded in August, with averages reaching a high of 77.5°F (25.3°C) and a low of 71.4°F (21.9°C).

What is the least humid month?

The least humid month is November, with an average relative humidity of 71%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 12.8 days and typically aggregates up to 3.31" (84mm) of precipitation.

What is the month with the shortest days in Yaphank?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

Average temperature
Yaphank, NY

Average temperature - Yaphank, NY

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (38.7°F).

The months with the highest average low temperature are July and August (71.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure
Yaphank, NY

Average pressure - Yaphank, NY

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
Yaphank, NY

Average wind speed - Yaphank, NY

The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest months (with the lowest average wind speed) are July and August (9.6mph).

Average humidity
Yaphank, NY

Average humidity - Yaphank, NY

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).

Average rainfall
Yaphank, NY

Average rainfall - Yaphank, NY

The wettest month (with the highest rainfall) is December (3.31").
The driest months (with the least rainfall) are January, February and September (2.01").

Average rainfall days
Yaphank, NY

Average rainfall days - Yaphank, NY

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (9 days).

Average snowfall
Yaphank, NY

Average snowfall - Yaphank, NY

The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Yaphank, NY

Average snowfall days - Yaphank, NY

The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Yaphank, NY

Average daylight / Average sunshine - Yaphank, NY

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).

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

Average sunshine days
Yaphank, NY

Average sunshine days - Yaphank, NY

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is February (12.8 days).

Average UV index
Yaphank, NY

Average UV index - Yaphank, NY

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 and December (UV index 2).

Average visibility
Yaphank, NY

Average visibility - Yaphank, NY

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).

Yaphank, New York, USA

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