Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
During the coldest month, January, temperatures average a high of 37.4°F (3°C) and a low of 28.8°F (-1.8°C).Humidity
The average relative humidity in January is 72%.Rainfall
In Old Westbury, during January, the rain falls for 5.4 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Old Westbury, during the entire year, the rain falls for 103.6 days and collects up to 7.83" (199mm) of precipitation.Snowfall
January through March and December are months with snowfall. In Old Westbury, in January, snow falls for 4.4 days, with typically accumulated 0.35" (9mm) of snow. In Old Westbury, during the entire year, snow falls for 14.8 days and aggregates up to 1.34" (34mm) of snow.Daylight
In January, the average length of the day is 9h and 39min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:37 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:09 pm EST.
Sunshine
In January, the average sunshine is 5.1h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In January, the UV index of 2 transforms into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the coldest month in Old Westbury?
How cold is January in Old Westbury?
What is the average humidity in January in Old Westbury?
How much does it rain in Old Westbury in January?
How much does it snow in Old Westbury in January?
How many hours of daylight does Old Westbury have in January?
When are sunrise and sunset in January in Old Westbury?
How long on average sun shines in January in Old Westbury?
What are the months with the lowest UV index in Old Westbury?
What is the UV index reading in January in Old Westbury?
Average temperature in January
Old Westbury, NY
- Average high temperature in January: 37.4°F
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).
- Average low temperature in January: 28.8°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 in January
Old Westbury, NY
- Average pressure in January: 30.05"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 in January
Old Westbury, NY
- Average wind speed in January: 12.5mph
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 in January
Old Westbury, NY
- Average humidity in January: 72%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall in January
Old Westbury, NY
- Average rainfall in January: 0.51"
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 in January
Old Westbury, NY
- Average rainfall days in January: 5.4 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 in January
Old Westbury, NY
- Average snowfall in January: 0.35"
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 in January
Old Westbury, NY
- Average snowfall days in January: 4.4 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 in January /
Average sunshine in January
Old Westbury, NY
- Average daylight in January: 9h and 4min
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
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 in January
Old Westbury, NY
- Average sunshine days in January: 22.4 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 in January
Old Westbury, NY
- Average UV index in January: 2
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 in January
Old Westbury, NY
- Average cloud cover in January: 44
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 in January
Old Westbury, NY
- Average visibility in January: 6mi
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).
Old Westbury, New York, USA
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