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 is the month that records the lowest temperatures, with averages ranging from a high of 42.1°F (5.6°C) to a low of 28°F (-2.2°C).Humidity
The average relative humidity in January is 74%.Rainfall
In January, the rain falls for 9.6 days. Throughout January, 2.6" (66mm) of precipitation is accumulated. Throughout the year, in Williamsville, there are 156.7 rainfall days, and 37.44" (951mm) of precipitation is accumulated.Snowfall
January through March, October through December are months with snowfall in Williamsville. In Williamsville, in January, snow falls for 3 days, with typically accumulated 0.91" (23mm) of snow. Throughout the year, in Williamsville, there are 10.7 snowfall days, and 5.08" (129mm) of snow is accumulated.Daylight
The average length of the day in January in Williamsville is 9h and 58min.On the first day of January, sunrise is at 7:15 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:25 pm CST.
Sunshine
In January, the average sunshine is 5.1h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Williamsville. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Williamsville?
Is January cold in Williamsville?
What is the average humidity in January in Williamsville?
How much does it rain in Williamsville in January?
How many days does it snow in January in Williamsville?
How many hours of daylight does Williamsville have in January?
When is the sunrise / sunset in January in Williamsville?
How long on average sun shines in January in Williamsville?
What are the months with the lowest UV index in Williamsville?
How high is the UV index in January in Williamsville?
Average temperature in January
Williamsville, MO
- Average high temperature in January: 42.1°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in January: 28°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in January
Williamsville, MO
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Williamsville, MO
- Average wind speed in January: 8.6mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in January
Williamsville, MO
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Williamsville, MO
- Average rainfall in January: 2.6"
The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in January
Williamsville, MO
- Average rainfall days in January: 9.6 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.6 days).
Average snowfall in January
Williamsville, MO
- Average snowfall in January: 0.91"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in January
Williamsville, MO
- Average snowfall days in January: 3 days
The month with the highest number of snowfall days is February (3.3 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
Williamsville, MO
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Williamsville, MO
- Average sunshine days in January: 18.5 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in January
Williamsville, MO
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Williamsville, MO
- Average cloud cover in January: 44
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in January
Williamsville, MO
- 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).
Williamsville, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location