Riverhead
New York, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Riverhead, NY

January, the same as December, is a wintry winter month in Riverhead, New York, with average temperature fluctuating between 38.7°F (3.7°C) and 30.6°F (-0.8°C). January is the coldest month, with an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 30.6°F (-0.8°C). Weather in January »

February, the last month of the winter, in Riverhead, is also a wintry month, with average temperature varying between 39.7°F (4.3°C) and 31.3°F (-0.4°C). In February, the average high-temperature is essentially the same as in January - a still wintry 39.7°F (4.3°C). Weather in February »

March, the first month of the spring, in Riverhead, is a chilly month, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 36.1°F (2.3°C). In Riverhead, New York, the average high-temperature is almost the same as in February - a chilly 43.5°F (6.4°C). Weather in March »

April is a fresh spring month in Riverhead, New York, with average temperature fluctuating between 51.4°F (10.8°C) and 44.4°F (6.9°C). In April, the average high-temperature marginally rises, from a chilly 43.5°F (6.4°C) in March, to a cool 51.4°F (10.8°C). Weather in April »

The last month of the spring, May, is a mild month in Riverhead, New York, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 53.2°F (11.8°C). In Riverhead, the average high-temperature in May rises, from a cool 51.4°F (10.8°C) in April, to a moderate 60.4°F (15.8°C). Weather in May »

The first month of the summer, June, is a pleasant month in Riverhead, New York, with average temperature ranging between min 63°F (17.2°C) and max 69.4°F (20.8°C). In Riverhead, the average high-temperature in June increases, from a moderate 60.4°F (15.8°C) in May, to an agreeable 69.4°F (20.8°C). Weather in June »

July is a moderately hot summer month in Riverhead, New York, with average temperature fluctuating between 70.9°F (21.6°C) and 76.8°F (24.9°C). In Riverhead, the average high-temperature in July marginally rises, from a pleasant 69.4°F (20.8°C) in June, to a warm 76.8°F (24.9°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Riverhead, New York, with average temperature ranging between min 71.2°F (21.8°C) and max 77.5°F (25.3°C). August is the warmest month, with an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 71.2°F (21.8°C). Weather in August »

September, the first month of the autumn, in Riverhead, is also an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 65.1°F (18.4°C). In Riverhead, the average high-temperature slightly decreases, from a moderately hot 77.5°F (25.3°C) in August, to an agreeable 71.2°F (21.8°C). Weather in September »

October, like September, in Riverhead, New York, is another enjoyable autumn month, with average temperature varying between 55.6°F (13.1°C) and 62.2°F (16.8°C). In Riverhead, New York, the average high-temperature drops, from an agreeable 71.2°F (21.8°C) in September, to an enjoyable 62.2°F (16.8°C). Weather in October »

November, the last month of the autumn, in Riverhead, is another cool month, with average temperature varying between 45.5°F (7.5°C) and 52.5°F (11.4°C). In Riverhead, the average high-temperature in November decreases, from an enjoyable 62.2°F (16.8°C) in October, to a cool 52.5°F (11.4°C). Weather in November »

The first month of the winter, December, is also a frosty month in Riverhead, New York, with average temperature varying between 37°F (2.8°C) and 44.4°F (6.9°C). In Riverhead, the average high-temperature slightly decreases, from a cool 52.5°F (11.4°C) in November, to a chilly 44.4°F (6.9°C). Weather in December »

What is the coldest month in Riverhead?

With an average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 30.6°F (-0.8°C), January is the coldest month in Riverhead.

How much does it rain in Riverhead?

Throughout the year, there are 154.3 rainfall days, and 30" (762mm) of precipitation is accumulated.

When does it snow in Riverhead?

January through March, May, November and December are months with snowfall in Riverhead, New York.

How much does it snow in Riverhead?

In Riverhead, during the entire year, snow falls for 18.6 days, and aggregates up to 4.45" (113mm) of snow.

When is the lowest UV index in Riverhead?

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

What is the month with the least sunshine in Riverhead?

February has the least sunshine of the year in Riverhead, with an average of 4.7h of sunshine.

When does it snow the most in Riverhead?

The month with the most snowfall is March when snow falls for 3.7 days and typically aggregates up to 1.54" (39mm) of snow.

When it does not snow in Riverhead?

In Riverhead snow does not fall in April, June through October.

What is the most humid month in Riverhead?

May is the most humid month in Riverhead, with an average relative humidity of 80%.

When are the longest days in Riverhead?

The month with the longest days in Riverhead is June, with an average of 15.1h of daylight.

What is the month with the highest UV index in Riverhead?

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

What are the months with the most sunshine in Riverhead?

July and August, with an average of 10.7h of sunshine, are months with the most sunshine in Riverhead.

What is the warmest month in Riverhead?

August is the warmest month in Riverhead, New York, with an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 71.2°F (21.8°C).

What is the driest month in Riverhead?

The month with the least rainfall is September when the rain falls for 12.3 days and typically collects 1.89" (48mm) of precipitation.

What is the least humid month in Riverhead?

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

What is the wettest month in Riverhead?

The month with the most rainfall is December when the rain falls for 13.1 days and typically aggregates up to 3.27" (83mm) of precipitation.

What is the month with the shortest days in Riverhead?

December has the shortest days of the year, with an average of 9.3h of daylight.
Average temperature - Riverhead, NY
Average rainfall - Riverhead, NY

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days - Riverhead, NY

The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (9 days).

Average snowfall - Riverhead, NY
Average snowfall days - Riverhead, NY

The month with the highest number of snowfall days is January (5.5 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight / Average sunshine - Riverhead, NY

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

Months with the most sunshine are July and August (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average UV index - Riverhead, NY