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 Westchester, the lowest average temperatures are observed in January, with a high of 28.8°F (-1.8°C) and a low of 18°F (-7.8°C).Humidity
January and February, with an average relative humidity of 82%, are the most humid months in Westchester.Rainfall
In Westchester, during January, the rain falls for 6.3 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Westchester, Illinois, during the entire year, the rain falls for 149.4 days and collects up to 25.08" (637mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In January, in Westchester, it is snowing for 12.4 days. Throughout January, 3.62" (92mm) of snow is accumulated. Throughout the year, there are 45.8 snowfall days, and 14.25" (362mm) of snow is accumulated.Daylight
In Westchester, the average length of the day in January is 9h and 33min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:30 pm. On the last day of January, in Westchester, sunrise is at 7:05 am and sunset at 5:04 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.7h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 1 during January morphs into the following directions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the coldest month in Westchester?
How cold is January in Westchester?
What are the most humid months in Westchester?
What is the average humidity in January in Westchester?
How many days does it rain in January in Westchester?
How much does it snow in Westchester in January?
What is the average length of the day in January in Westchester?
When are sunrise and sunset in January in Westchester?
What is the month with the least sunshine in Westchester?
How many hours of sunshine does Westchester have in January?
When is the lowest UV index in Westchester?
What is the UV index intensity in January in Westchester?
Average temperature in January
Westchester, IL
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Westchester, IL
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Westchester, IL
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Westchester, IL
- Average humidity in January: 82%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Westchester, IL
- Average rainfall in January: 1.34"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").
Average rainfall days in January
Westchester, IL
- Average rainfall days in January: 6.3 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in January
Westchester, IL
- Average snowfall in January: 3.62"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Westchester, IL
- Average snowfall days in January: 12.4 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Westchester, IL
- 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: 3h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Westchester, IL
- Average sunshine days in January: 14.2 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in January
Westchester, IL
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Westchester, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Westchester, IL
- 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).
Westchester, Illinois, USA
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