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
January, known for its average high temperature of 29.3°F (-1.5°C) and an average low temperature of 16.7°F (-8.5°C), is the coldest month.Humidity
The average relative humidity in January is 81%.Rainfall
In Jefferson Heights, in January, it is raining for 12.7 days, with typically 2.17" (55mm) of accumulated precipitation. In Jefferson Heights, during the entire year, the rain falls for 174.8 days and collects up to 33.46" (850mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Jefferson Heights, in January, snow falls for 14.6 days, with typically accumulated 8.86" (225mm) of snow. In Jefferson Heights, during the entire year, snow falls for 70.1 days and aggregates up to 51.18" (1300mm) of snow.Daylight
In January, the average length of the day is 9h and 31min.On the first day of the month, sunrise is at 7:24 am and sunset at 4:33 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:07 pm EST.
Sunshine
In Jefferson Heights, the average sunshine in January is 4.8h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In January, the maximum UV index of 2 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is it in January?
What is the average humidity in January in Jefferson Heights?
How much does it rain in January?
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 many hours of sunshine does Jefferson Heights have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Jefferson Heights, NY
- Average high temperature in January: 29.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in January: 16.7°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in January
Jefferson Heights, 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
Jefferson Heights, NY
- Average wind speed in January: 7.4mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in January
Jefferson Heights, NY
- Average humidity in January: 81%
The months with the highest relative humidity are February and December (83%).
The months with the lowest relative humidity are April, June and July (76%).
Average rainfall in January
Jefferson Heights, NY
- Average rainfall in January: 2.17"
The wettest month (with the highest rainfall) is July (3.46").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Jefferson Heights, NY
- Average rainfall days in January: 12.7 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (10 days).
Average snowfall in January
Jefferson Heights, NY
- Average snowfall in January: 8.86"
The month with the highest snowfall is February (11.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jefferson Heights, NY
- Average snowfall days in January: 14.6 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jefferson Heights, NY
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in January
Jefferson Heights, NY
- Average sunshine days in January: 12.7 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in January
Jefferson Heights, NY
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Jefferson Heights, NY
- Average cloud cover in January: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in January
Jefferson Heights, NY
- Average visibility in January: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Jefferson Heights, New York, USA
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