January weather forecastWilliamsville, NY
January
Weather in January
January, like December, is another subzero cold winter month in Williamsville, New York, with an average temperature fluctuating between 18.7°F (-7.4°C) and 29.3°F (-1.5°C).Temperature
In Williamsville, the month of January is known for its lowest average temperatures, reaching a high of 29.3°F (-1.5°C) and a low of 18.7°F (-7.4°C).Humidity
January and February, with an average relative humidity of 86%, are the most humid months in Williamsville.Rainfall
In Williamsville, in January, during 7.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 139.2 rainfall days, and 14.84" (377mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. The months with the most snowfall in Williamsville are January and February, with an average 2.95" (75mm) of accumulated snow.Daylight
In January, the average length of the day in Williamsville is 9h and 26min.On the first day of the month, sunrise is at 7:46 am and sunset at 4:50 pm. On the last day of January, sunrise is at 7:31 am and sunset at 5:25 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 2.4h of sunshine.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Williamsville. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 1 in January suggests the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Williamsville, NY
- Average high temperature in January: 29.3°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 (29.3°F).
- Average low temperature in January: 18.7°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in January
Williamsville, 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
Williamsville, NY
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in January
Williamsville, NY
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in January
Williamsville, NY
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in January
Williamsville, NY
- Average rainfall days in January: 7.1 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in January
Williamsville, NY
- Average snowfall in January: 2.95"
The months with the highest snowfall are January and February (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Williamsville, NY
- Average snowfall days in January: 15.8 days
The month with the highest number of snowfall days is January (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
Williamsville, NY
- Average daylight in January: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 2h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in January
Williamsville, NY
- Average sunshine days in January: 11.1 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in January
Williamsville, NY
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in January
Williamsville, NY
- Average cloud cover in January: 77
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
Williamsville, NY
- Average visibility in January: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
