December weather forecastWestfield, IN
December
Weather in December
December marks the culmination of the year with the arrival of winter in Westfield. The weather undergoes a significant transformation from November, with an increase in snowfall to 1.38" (35mm), the highest in the year. Throughout December, the cold intensifies, and the days continue to shorten, leading to longer, colder nights. Despite the freezing conditions, the holiday spirit often keeps the hearts of the residents warm. The bitter cold of December sets the tone for the imminent January frost.Temperature
The arrival of December corresponds with a temperature reduction, down from November's chilly 48.9°F (9.4°C) to a cold 37.9°F (3.3°C). The nights of December anticipate an average low-temperature of 27.5°F (-2.5°C).Humidity
The months with the highest humidity are January and December, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 6.9 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 128.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 5.9 days and accumulates 1.38" (35mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:47 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:29 pm EST.
Sunshine
The average sunshine in December in Westfield is 4.1h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Westfield, IN
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Westfield, IN
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Westfield, IN
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Westfield, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Westfield, IN
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Westfield, IN
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Westfield, IN
- Average snowfall in December: 1.38"
The month with the highest snowfall is December (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Westfield, IN
- Average snowfall days in December: 5.9 days
The month with the highest number of snowfall days is January (8 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, IN
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 6min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Westfield, IN
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Westfield, IN
- Average UV index in December: 1
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 December
Westfield, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Westfield, IN
- Average visibility in December: 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).
