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
In South Hempstead, the lowest temperatures are generally noted in January, averaging a high of 37.6°F (3.1°C) and a low of 29.3°F (-1.5°C).Humidity
In January, the average relative humidity is 73%.Rainfall
In South Hempstead, during January, the rain falls for 6.2 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 112.1 rainfall days, and 8.66" (220mm) of precipitation is accumulated.Snowfall
January through March, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 4.2 days and typically aggregates up to 0.43" (11mm) of snow.Daylight
In January, the average length of the day is 9h and 39min.On the first day of January, sunrise is at 7:18 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:10 pm EST.
Sunshine
In South Hempstead, New York, the average sunshine in January is 5.2h.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 reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 2 during January translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
South Hempstead, NY
- Average high temperature in January: 37.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in January: 29.3°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in January
South Hempstead, NY
- Average pressure in January: 30.05"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
South Hempstead, NY
- Average wind speed in January: 12.9mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in January
South Hempstead, NY
- Average humidity in January: 73%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall in January
South Hempstead, NY
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in January
South Hempstead, NY
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in January
South Hempstead, NY
- Average snowfall in January: 0.43"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in January
South Hempstead, NY
- Average snowfall days in January: 4.2 days
The month with the highest number of snowfall days is January (4.2 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
South Hempstead, NY
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
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 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
South Hempstead, NY
- Average sunshine days in January: 20.7 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in January
South Hempstead, 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
South Hempstead, NY
- Average cloud cover in January: 43
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
South Hempstead, 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).
South Hempstead, New York, USA
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