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
The average high-temperature drops in December, from November's frosty 47.5°F (8.6°C) to a wintry 36.5°F (2.5°C). December nights are marked by an average low-temperature of 27°F (-2.8°C).Humidity
The months with the highest humidity in Westlawn are January, February and December, with an average relative humidity of 83%.Rainfall
In Westlawn, in December, during 7.7 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Westlawn, during the entire year, the rain falls for 128.5 days and collects up to 15" (381mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Westlawn, Indiana, in December, snow falls for 6.8 days, with typically accumulated 0.87" (22mm) of snow. Throughout the year, there are 32.5 snowfall days, and 6.42" (163mm) of snow is accumulated.Daylight
December has the shortest days of the year in Westlawn, with an average of 9h and 18min of daylight.On the first day of December in Westlawn, sunrise is at 7:47 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 5:22 pm EST.
Sunshine
The average sunshine in December in Westlawn is 3.7h.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 vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Always opt for UVA and UVB-resistant sunglasses on radiant days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in Westlawn in December?
What are the most humid months in Westlawn?
What is the average humidity in December in Westlawn?
How much does it rain in Westlawn in December?
How much does it snow in Westlawn in December?
What is the month with the shortest days in Westlawn?
How many hours of daylight does Westlawn have in December?
When are sunrise and sunset in December in Westlawn?
How long on average sun shines in December in Westlawn?
When is the lowest UV index in Westlawn?
What is the UV index intensity in December in Westlawn?
Average temperature in December
Westlawn, IN
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in December
Westlawn, IN
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Westlawn, IN
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Westlawn, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Westlawn, IN
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Westlawn, IN
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in December
Westlawn, IN
- Average snowfall in December: 0.87"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Westlawn, IN
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Westlawn, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Westlawn, IN
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in December
Westlawn, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Westlawn, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Westlawn, 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).
Westlawn, Indiana, USA
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