Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's onset brings a slight change in high-temperatures, falling from an icy 41.7°F (5.4°C) in November to a freezing cold 28.8°F (-1.8°C). The average low-temperature, in December, in Westfield, is 18.5°F (-7.5°C).Humidity
In Westfield, the average relative humidity in December is 85%.Rainfall
In Westfield, in December, it is raining for 6.4 days, with typically 1.69" (43mm) of accumulated precipitation. Throughout the year, there are 146.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Westfield, in December, during 13.4 snowfall days, 5.24" (133mm) of snow is typically accumulated. Throughout the year, in Westfield, there are 61.9 snowfall days, and 24.76" (629mm) of snow is accumulated.Daylight
The month with the shortest days in Westfield is December, with an average of 9h and 0min of daylight.On the first day of December in Westfield, sunrise is at 7:12 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:30 pm CST.
Sunshine
The average sunshine in December is 3.8h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 1 during December leads to these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is December in Westfield?
What is the average humidity in December in Westfield?
How many days does it rain in December in Westfield?
How much does it snow in Westfield in December?
What is the month with the shortest days in Westfield?
What is the average length of the day in December in Westfield?
When are sunrise and sunset in December in Westfield?
How long on average sun shines in December in Westfield?
What is the month with the lowest UV index in Westfield?
How high is the UV index in December in Westfield?
Average temperature in December
Westfield, WI
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in December
Westfield, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Westfield, WI
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Westfield, WI
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Westfield, WI
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is June (3.94").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in December
Westfield, WI
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Westfield, WI
- Average snowfall in December: 5.24"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Westfield, WI
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Westfield, WI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Westfield, WI
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in December
Westfield, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Westfield, WI
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Westfield, WI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Westfield, Wisconsin, USA
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