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
With the beginning of December, the average high-temperature shows a decrease, transitioning from a wintry 41.7°F (5.4°C) in November to a freezing cold 28.8°F (-1.8°C). Westfield's average low-temperature for the month of December records at 18.5°F (-7.5°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In December, the rain falls for 6.4 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 146.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Westfield, Wisconsin, in December, during 13.4 snowfall days, 5.24" (133mm) of snow is typically accumulated. In Westfield, during the entire year, snow falls for 61.9 days and aggregates up to 24.76" (629mm) of snow.Daylight
The month with the shortest days 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
In Westfield, 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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December in Westfield?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Westfield have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
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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