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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 Brookhaven, New York, is a wintry winter month, with an average temperature varying between 30.6°F (-0.8°C) and 38.7°F (3.7°C). Brookhaven's January weather reaches an average high of 38.7°F (3.7°C) and an average low of 30.6°F (-0.8°C), making it the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Brookhaven, New York, with an average temperature varying between 31.5°F (-0.3°C) and 39.6°F (4.2°C). Entering February, Brookhaven's average high-temperature reads a still icy 39.6°F (4.2°C), indicating a close resemblance to the previous month's climate. Weather in February »
Weather in March
March, the first month of the spring in Brookhaven, is a chilly month, with an average temperature ranging between min 36.3°F (2.4°C) and max 43.3°F (6.3°C). March's advent denotes a minor fluctuation in the average high-temperature to a chilly 43.3°F (6.3°C) from February's 39.6°F (4.2°C). Weather in March »
Weather in April
April in Brookhaven, New York, is a fresh spring month, with an average temperature ranging between max 51.4°F (10.8°C) and min 44.6°F (7°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a frosty 43.3°F (6.3°C) in March to a cool 51.4°F (10.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a mild month in Brookhaven, New York, with an average temperature fluctuating between 60.4°F (15.8°C) and 54.1°F (12.3°C). The start of May signals an increase in the average high-temperature, moving from a cool 51.4°F (10.8°C) in April to a refreshing 60.4°F (15.8°C). Weather in May »
Weather in June
June, the first month of the summer in Brookhaven, is a pleasant month, with an average temperature varying between 63.1°F (17.3°C) and 69.3°F (20.7°C). June signifies a subtle uplift in the average high-temperature, adjusting from a refreshing 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 warm summer month in Brookhaven, New York, with an average temperature varying between 71.4°F (21.9°C) and 76.8°F (24.9°C). Brookhaven's weather in July presents a minor rise in the average high-temperature, moving from a pleasant 69.3°F (20.7°C) in June to a moderately hot 76.8°F (24.9°C). Weather in July »
Weather in August
August, the last month of the summer in Brookhaven, is also a moderately hot month, with an average temperature ranging between max 77.5°F (25.3°C) and min 71.4°F (21.9°C). August, noted for its average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 71.4°F (21.9°C), is considered the warmest month. Weather in August »
Weather in September
September, the first month of the autumn in Brookhaven, is also an agreeable month, with an average temperature ranging between min 65.3°F (18.5°C) and max 71.4°F (21.9°C). In Brookhaven, the average high-temperature in September gently drops from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.4°F (21.9°C). Weather in September »
Weather in October
October, like September, in Brookhaven, New York, is another comfortable autumn month, with an average temperature ranging between min 55.9°F (13.3°C) and max 62.6°F (17°C). The arrival of October suggests a slight decrease in the average high-temperature, moving from a pleasant 71.4°F (21.9°C) in September to a refreshing 62.6°F (17°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Brookhaven, New York, with an average temperature varying between 52.5°F (11.4°C) and 45.5°F (7.5°C). The move into November indicates a reduction in the average high-temperature, down from October's comfortable 62.6°F (17°C) 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 Brookhaven, New York, with an average temperature ranging between max 44.8°F (7.1°C) and min 37°F (2.8°C). December is characterized by a slight reduction in average high-temperature, easing from a fresh 52.5°F (11.4°C) in November to a frosty 44.8°F (7.1°C). Weather in December »
Updated: Jul 2, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
January is Brookhaven's coldest month, registering average high temperatures of 38.7°F (3.7°C) and lows of 30.6°F (-0.8°C).
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 Brookhaven?
In Brookhaven, during the entire year, the rain falls for 156.2 days and collects up to 30.2" (767mm) of precipitation.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 5.3 days and typically aggregates up to 1.5" (38mm) of snow.
How many days does it snow?
In Brookhaven, 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?
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2.
What is the month with the least sunshine?
With an average of 4.8h of sunshine, February has the least sunshine of the year.
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 Brookhaven, 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 are the months with the most sunshine?
The months with the most sunshine are July and August, with an average of 10.8h of sunshine.
What part of the year is the hottest?
With average high temperatures of 77.5°F (25.3°C) and lows of 71.4°F (21.9°C), August is the warmest month.
What is the least humid month?
With an average relative humidity of 71%, November is the least humid month.
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?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Brookhaven, 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
Brookhaven, 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
Brookhaven, 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:
9.6mph - Average wind speed in August:
9.6mph - Average wind speed in September:
11.1mph - Average wind speed in October:
13mph - Average wind speed in November:
13.7mph - Average wind speed in December:
14mph
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
Brookhaven, NY
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).
Average rainfall
Brookhaven, NY
- Average rainfall in January:
2.01" - Average rainfall in February:
2.01" - Average rainfall in March:
2.64" - Average rainfall in April:
2.52" - Average rainfall in May:
2.4" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.87" - Average rainfall in August:
2.68" - Average rainfall in September:
2.01" - Average rainfall in October:
3.15" - Average rainfall in November:
2.32" - Average rainfall in December:
3.31"
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
Brookhaven, NY
- Average rainfall days in January:
10.1 days - Average rainfall days in February:
9 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
15 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
16 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
12.8 days
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
Brookhaven, 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
Brookhaven, NY
- Average snowfall days in January:
5.3 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 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:
0.6 days - Average snowfall days in December:
3.4 days
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
Brookhaven, 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 4min - 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 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
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
Brookhaven, NY
- Average sunshine days in January:
15.6 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.4 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
13.5 days
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
Brookhaven, 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
Brookhaven, NY
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Brookhaven, 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).
Brookhaven, New York, USA
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