Climate and monthly weather forecastOld Westbury, NY
Climate and monthly weather forecast
Weather in January
January, like December, in Old Westbury, New York, is a wintry winter month, with an average temperature fluctuating between 37.4°F (3°C) and 28.8°F (-1.8°C). Old Westbury's coldest month, January, registers temperatures that range from a high of 37.4°F (3°C) to a low of 28.8°F (-1.8°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Old Westbury, New York, with temperature in the range of an average low of 30.2°F (-1°C) and an average high of 39.4°F (4.1°C). Old Westbury notes an average high-temperature of a still icy 39.4°F (4.1°C) in February, displaying minor variation from January. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Old Westbury, New York, with an average temperature fluctuating between 36°F (2.2°C) and 44.6°F (7°C). Transitioning into March, Old Westbury records an average high-temperature of a frosty 44.6°F (7°C), almost identical to February's 39.4°F (4.1°C). Weather in March »Weather in April
April is a cool spring month in Old Westbury, New York, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 44.8°F (7.1°C). April sees a rise in the average high-temperature, climbing from a chilly 44.6°F (7°C) in March to a cool 53.8°F (12.1°C). Weather in April »Weather in May
May, the last month of the spring in Old Westbury, is a comfortable month, with an average temperature varying between 63.7°F (17.6°C) and 54.3°F (12.4°C). An increase in the average high-temperature marks May, moving from April's cool 53.8°F (12.1°C) to a comfortable 63.7°F (17.6°C). Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in Old Westbury, New York, with an average temperature ranging between max 72.7°F (22.6°C) and min 63.9°F (17.7°C). June brings a rise in the average high-temperature, transitioning from May's enjoyable 63.7°F (17.6°C) to an agreeable 72.7°F (22.6°C). Weather in June »Weather in July
July is a moderately hot summer month in Old Westbury, New York, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 71.2°F (21.8°C). In Old Westbury, the highest average temperatures are observed in July, with a high of 80.1°F (26.7°C) and a low of 71.2°F (21.8°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Old Westbury, New York, with an average temperature fluctuating between 79.2°F (26.2°C) and 71.2°F (21.8°C). An average high-temperature of a still moderately hot 79.2°F (26.2°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »Weather in September
September, the first month of the autumn in Old Westbury, is also an agreeable month, with an average temperature fluctuating between 64.8°F (18.2°C) and 72.5°F (22.5°C). As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 79.2°F (26.2°C) in August to an agreeable 72.5°F (22.5°C). Weather in September »Weather in October
October, like September, in Old Westbury, New York, is another comfortable autumn month, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 54.5°F (12.5°C). The start of October signals a decrease in the average high-temperature, transitioning from an agreeable 72.5°F (22.5°C) in September to a comfortable 62.4°F (16.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Old Westbury, New York, with an average temperature fluctuating between 51.4°F (10.8°C) and 43.7°F (6.5°C). In November, the average high-temperature goes from an enjoyable 62.4°F (16.9°C) in October to a cool 51.4°F (10.8°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Old Westbury, New York, with an average temperature varying between 43.3°F (6.3°C) and 35.8°F (2.1°C). December witnesses a gentle descent in average high-temperature, descending from November's fresh 51.4°F (10.8°C) to a chilly 43.3°F (6.3°C). Weather in December »Updated: Jul 13, 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
January is Old Westbury's coldest month, registering average high temperatures of 37.4°F (3°C) and lows of 28.8°F (-1.8°C).
Throughout the year, there are 103.6 rainfall days, and 7.83" (199mm) of precipitation is accumulated.
January through March and December are months with snowfall.
In Old Westbury, during the entire year, snow falls for 14.8 days and aggregates up to 1.34" (34mm) of snow.
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2.
With an average of 4.7h of sunshine, February has the least sunshine of the year.
The month with the most snowfall is March, when snow falls for 2.9 days and typically aggregates up to 0.43" (11mm) of snow.
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.
In Old Westbury, snow does not fall in April through November.
May and June, with an average relative humidity of 76%, are most humid months.
The month with the longest days is June, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Old Westbury's warmest month, July, generally records average temperatures ranging from a high of 80.1°F (26.7°C) to a low of 71.2°F (21.8°C).
The month with the most rainfall is July, when the rain falls for 11.3 days and typically aggregates up to 0.87" (22mm) of precipitation.
July has the most sunshine of the year, with an average of 10.8h of sunshine.
September is the month with the least rainfall. Rain falls for 8.8 days and accumulates 0.35" (9mm) of precipitation.
November is the least humid month, with an average relative humidity of 71%.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Old Westbury, NY
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37.4°F).
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Old Westbury, NY
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.05"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:
30.07"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
Old Westbury, NY
- Average wind speed in January:
12.5mph - Average wind speed in February:
12.1mph - Average wind speed in March:
11.8mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
8.1mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.4mph - Average wind speed in October:
11.2mph - Average wind speed in November:
11.7mph - Average wind speed in December:
12.1mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity
Old Westbury, NY
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall
Old Westbury, NY
- Average rainfall in January:
0.51" - Average rainfall in February:
0.43" - Average rainfall in March:
0.47" - Average rainfall in April:
0.75" - Average rainfall in May:
0.75" - Average rainfall in June:
0.63"
- Average rainfall in July:
0.87" - Average rainfall in August:
0.71" - Average rainfall in September:
0.35" - Average rainfall in October:
0.79" - Average rainfall in November:
0.75" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days
Old Westbury, NY
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
10.3 days - Average rainfall days in May:
10 days - Average rainfall days in June:
8.8 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
8.8 days - Average rainfall days in October:
9.2 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is July (11.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall
Old Westbury, NY
The month with the highest snowfall is March (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Old Westbury, NY
- Average snowfall days in January:
4.4 days - Average snowfall days in February:
4 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.2 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:
0.1 days - Average snowfall days in November:
0.4 days - Average snowfall days in December:
2.8 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Old Westbury, NY
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h 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 January:
5h and 6min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Old Westbury, NY
- Average sunshine days in January:
22.4 days - Average sunshine days in February:
19.3 days - Average sunshine days in March:
20.2 days - Average sunshine days in April:
17.8 days - Average sunshine days in May:
18.2 days - Average sunshine days in June:
19.2 days
- Average sunshine days in July:
16.9 days - Average sunshine days in August:
17.4 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
22 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (16.9 days).
Average UV index
Old Westbury, 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
Old Westbury, NY
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 28).
Average visibility
Old Westbury, 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).
