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
Williamstown's January weather, marked by an average high temperature of 34.7°F (1.5°C) and an average low temperature of 21.9°F (-5.6°C), is the coldest in the year.Humidity
January and December, with an average relative humidity of 82%, are the most humid months in Williamstown.Rainfall
In Williamstown, in January, it is raining for 9.8 days, with typically 2.32" (59mm) of accumulated precipitation. In Williamstown, Indiana, during the entire year, the rain falls for 161.3 days and collects up to 31.26" (794mm) of precipitation.Snowfall
Months with snowfall in Williamstown are January through April, October through December. In Williamstown, Indiana, in January, during 9.8 snowfall days, 2.32" (59mm) of snow is typically accumulated. Throughout the year, there are 35 snowfall days, and 10.67" (271mm) of snow is accumulated.Daylight
In Williamstown, Indiana, the average length of the day in January is 9h and 46min.On the first day of the month, sunrise is at 8:01 am and sunset at 5:28 pm. On the last day of January, sunrise is at 7:50 am and sunset at 6:00 pm EST.
Sunshine
The month with the least sunshine is January, with an average of 3.9h of sunshine.UV index
In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What is the coldest month in Williamstown?
How cold is it in Williamstown in January?
What are the most humid months in Williamstown?
What is the average humidity in January in Williamstown?
How many days does it rain in January in Williamstown?
How much does it snow in Williamstown in January?
How many hours of daylight does Williamstown have in January?
When is the sunrise / sunset in January in Williamstown?
What is the month with the least sunshine in Williamstown?
How many hours of sunshine does Williamstown have in January?
What is the UV index intensity in January in Williamstown?
Average temperature in January
Williamstown, IN
- Average high temperature in January: 34.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in January: 21.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in January
Williamstown, IN
- Average pressure in January: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Williamstown, IN
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in January
Williamstown, IN
- Average humidity in January: 82%
The months with the highest relative humidity are January and December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Williamstown, IN
- Average rainfall in January: 2.32"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in January
Williamstown, IN
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in January
Williamstown, IN
- Average snowfall in January: 2.32"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Williamstown, IN
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Williamstown, IN
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Williamstown, IN
- Average sunshine days in January: 13 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in January
Williamstown, IN
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Williamstown, IN
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Williamstown, IN
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Williamstown, Indiana, USA
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