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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Riverhead, New York, is a wintry winter month, with an average temperature ranging between max 38.7°F (3.7°C) and min 30.6°F (-0.8°C). Riverhead's January weather, marked by an average high temperature of 38.7°F (3.7°C) and an average low temperature of 30.6°F (-0.8°C), is the coldest in the year. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Riverhead, New York, with temperature in the range of an average low of 31.3°F (-0.4°C) and an average high of 39.7°F (4.3°C). February reports an average high-temperature of a still wintry 39.7°F (4.3°C), slightly varied from January's 38.7°F (3.7°C). Weather in February »
Weather in March
March, the first month of the spring in Riverhead, is a chilly month, with an average temperature ranging between max 43.5°F (6.4°C) and min 36.1°F (2.3°C). Riverhead, New York, commences March with an average high-temperature of a frosty 43.5°F (6.4°C), maintaining a close resemblance to the previous month. Weather in March »
Weather in April
April in Riverhead, New York, is a cool spring month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 51.4°F (10.8°C). The start of April signals a slight increase in the average high-temperature, moving from a chilly 43.5°F (6.4°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 Riverhead, is a mild month, with an average temperature fluctuating between 53.2°F (11.8°C) and 60.4°F (15.8°C). A shift in the average high-temperature is noticeable in May, changing from a cool 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 Riverhead, New York, with temperature in the range of an average low of 63°F (17.2°C) and an average high of 69.4°F (20.8°C). June brings a rise in Riverhead's average high-temperature, moving from a mild 60.4°F (15.8°C) in May to an agreeable 69.4°F (20.8°C). Weather in June »
Weather in July
July is a moderately hot summer month in Riverhead, New York, with an average temperature varying between 76.8°F (24.9°C) and 70.9°F (21.6°C). Riverhead's weather in July shows a minor rise in the average high-temperature, moving slightly up from June's agreeable 69.4°F (20.8°C) to a warm 76.8°F (24.9°C). Weather in July »
Weather in August
August, the last month of the summer in Riverhead, is also a moderately hot month, with an average temperature varying between 71.2°F (21.8°C) and 77.5°F (25.3°C). August, on average, is the warmest month, registering a high temperature of 77.5°F (25.3°C) and a low of 71.2°F (21.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Riverhead, is still a pleasant 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). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's moderately hot 77.5°F (25.3°C) to a pleasant 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Riverhead, New York, with an average temperature ranging between max 62.2°F (16.8°C) and min 55.6°F (13.1°C). Riverhead's October weather comes with a decrease in average high-temperatures, moving from an agreeable 71.2°F (21.8°C) in September to a comfortable 62.2°F (16.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Riverhead, New York, with an average temperature varying between 45.5°F (7.5°C) and 52.5°F (11.4°C). The transition into November involves a decrease in the average high-temperature, falling from a comfortable 62.2°F (16.8°C) in October to a fresh 52.5°F (11.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also a frosty month in Riverhead, New York, with an average temperature varying between 44.4°F (6.9°C) and 37°F (2.8°C). December ushers in a minute temperature change, with average high-temperatures reducing from November's cool 52.5°F (11.4°C) to a frosty 44.4°F (6.9°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Riverhead?
Riverhead's coldest month, January, generally records average temperatures ranging from a high of 38.7°F (3.7°C) to a low of 30.6°F (-0.8°C).
How many days does it rain in Riverhead?
Throughout the year, in Riverhead, there are 154.3 rainfall days, and 30" (762mm) of precipitation is accumulated.
When does it snow in Riverhead?
Months with snowfall in Riverhead are January through March, May, November and December.
How much does it snow in Riverhead?
Throughout the year, in Riverhead, there are 18.6 snowfall days, and 4.45" (113mm) of snow is accumulated.
When is the lowest UV index in Riverhead?
The months with the lowest UV index in Riverhead are January through March and December, with an average maximum UV index of 2.
What is the month with the least sunshine in Riverhead?
February has the least sunshine of the year, with an average of 4.7h of sunshine.
When does it snow the most in Riverhead?
March is the month with the most snowfall in Riverhead, New York. Snow falls for 3.7 days and accumulates 1.54" (39mm) of snow.
When is Daylight Saving Time (DST) in Riverhead?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Riverhead, 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.
When it does not snow in Riverhead?
In Riverhead, New York, 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?
With an average of 15h and 6min of daylight, June has the longest days of the year in Riverhead, New York.
What are the months with the highest UV index in Riverhead?
The months with the highest UV index in Riverhead, New York, 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 part of the year is the hottest in Riverhead?
August, characterized by an average high temperature of 77.5°F (25.3°C) and a low temperature of 71.2°F (21.8°C), is generally the warmest month in Riverhead.
What is the driest month in Riverhead?
September is the month with the least rainfall in Riverhead. Rain falls for 12.3 days and accumulates 1.89" (48mm) of precipitation.
What is the least humid month in Riverhead?
With an average relative humidity of 71%, November is the least humid month.
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?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Riverhead, 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 month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure
Riverhead, NY
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"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
Riverhead, NY
- Average wind speed in January:
14.5mph - Average wind speed in February:
13.9mph - Average wind speed in March:
13.7mph - Average wind speed in April:
12.6mph - Average wind speed in May:
10.7mph - Average wind speed in June:
9.8mph
- Average wind speed in July:
9.5mph - Average wind speed in August:
9.6mph - Average wind speed in September:
11.2mph - Average wind speed in October:
13.2mph - Average wind speed in November:
13.9mph - Average wind speed in December:
14.2mph
The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity
Riverhead, NY
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).
Average rainfall
Riverhead, NY
- Average rainfall in January:
1.97" - Average rainfall in February:
2.09" - Average rainfall in March:
2.64" - Average rainfall in April:
2.52" - Average rainfall in May:
2.4" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.8" - Average rainfall in August:
2.64" - Average rainfall in September:
1.89" - Average rainfall in October:
3.11" - Average rainfall in November:
2.44" - Average rainfall in December:
3.27"
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
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
9 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
13.1 days
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
The month with the highest snowfall is March (1.54").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days
Riverhead, NY
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2.9 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Riverhead, NY
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 January:
5h and 1min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Riverhead, NY
- Average sunshine days in January:
15.5 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
14.9 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
13.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is February (13.2 days).
Average UV index
Riverhead, 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 cloud cover
Riverhead, NY
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Riverhead, 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).
Riverhead, New York, USA
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