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
As December commences, the average high-temperature shows a reduction, transitioning from a frosty 48.9°F (9.4°C) in November to a cold 38.3°F (3.5°C). The nighttime temperature, during December, averages of 28.4°F (-2°C).Humidity
With an average relative humidity of 83%, December is the most humid month.Rainfall
In Shirley, in December, it is raining for 7.4 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, there are 125.9 rainfall days, and 12.28" (312mm) of precipitation is accumulated.Snowfall
Months with snowfall in Shirley are January through April, October through December. The month with the most snowfall in Shirley is December, when snow falls for 5.7 days and typically aggregates up to 1.34" (34mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Shirley, sunrise is at 7:45 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 5:27 pm EST.
Sunshine
The average sunshine in December in Shirley is 4h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is December in Shirley?
What is the most humid month in Shirley?
What is the average humidity in December in Shirley?
How much does it rain in Shirley in December?
What is the snowiest month in Shirley?
How much does it snow in Shirley in December?
What is the month with the shortest days in Shirley?
How many hours of daylight does Shirley have in December?
When are sunrise and sunset in December in Shirley?
How long on average sun shines in December in Shirley?
When is the lowest UV index in Shirley?
How high is the UV index in December in Shirley?
Average temperature in December
Shirley, IN
- Average high temperature in December: 38.3°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 (32.9°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Shirley, 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
Shirley, IN
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Shirley, IN
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Shirley, IN
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Shirley, IN
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Shirley, IN
- Average snowfall in December: 1.34"
The month with the highest snowfall is December (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Shirley, IN
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shirley, IN
- Average daylight in December: 9h and 2min
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 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Shirley, IN
- Average sunshine days in December: 18.9 days
The months with the most sunshine days are October and November (19.8 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in December
Shirley, 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
Shirley, IN
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Shirley, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Shirley, Indiana, USA
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