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 arrival corresponds with a decrease in average high-temperatures, from November's frosty 47.7°F (8.7°C) to a wintry 36.7°F (2.6°C). Headlee usually reports an average low-temperature of 26.4°F (-3.1°C) during the month of December.Humidity
In December, the average relative humidity is 82%.Rainfall
In Headlee, during December, the rain falls for 9.5 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 157.1 rainfall days, and 23.11" (587mm) of precipitation is accumulated.Snowfall
Months with snowfall in Headlee are January through April, November and December. In December, it is snowing for 8.8 days. Throughout December, 1.85" (47mm) of snow is accumulated. Throughout the year, there are 42 snowfall days, and 10.16" (258mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:52 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:28 pm EST.
Sunshine
The average sunshine in December is 4.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Headlee, Indiana. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in Headlee in December?
What is the average humidity in December in Headlee?
How much does it rain in Headlee in December?
How much does it snow in Headlee in December?
What is the month with the shortest days in Headlee?
What is the average length of the day in December in Headlee?
What time are sunrise and sunset in December in Headlee?
How long on average sun shines in December in Headlee?
What is the month with the lowest UV index in Headlee?
How high is the UV index in December in Headlee?
Average temperature in December
Headlee, IN
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 26.4°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°F).
Average pressure in December
Headlee, IN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Headlee, IN
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Headlee, IN
- Average humidity in December: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Headlee, IN
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in December
Headlee, IN
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Headlee, IN
- Average snowfall in December: 1.85"
The month with the highest snowfall is January (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Headlee, IN
- Average snowfall days in December: 8.8 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Headlee, 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: 4h and 1min
The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Headlee, IN
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in December
Headlee, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Headlee, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Headlee, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Headlee, Indiana, USA
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