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 arrival of December corresponds with a reduction in the average high-temperature, down from November's cool 50.9°F (10.5°C) to an icy 40.8°F (4.9°C). West Harrison, during the month of December, experiences an average low-temperature of 29.5°F (-1.4°C).Humidity
January, February and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In West Harrison, during December, the rain falls for 11.4 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, in West Harrison, Indiana, there are 154.1 rainfall days, and 20" (508mm) of precipitation is accumulated.Snowfall
Months with snowfall in West Harrison, Indiana, are January through April, November and December. In West Harrison, in December, during 8 snowfall days, 1.26" (32mm) of snow is typically accumulated. In West Harrison, during the entire year, snow falls for 33.4 days and aggregates up to 5.55" (141mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:40 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:26 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 1 in December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in West Harrison?
What is the most humid month in West Harrison?
What is the average humidity in December in West Harrison?
How much does it rain in West Harrison in December?
How much does it snow in West Harrison in December?
What is the month with the shortest days in West Harrison?
How many hours of daylight does West Harrison have in December?
When is the sunrise / sunset in December in West Harrison?
How long on average sun shines in December in West Harrison?
When is the lowest UV index in West Harrison?
What is the UV index reading in December in West Harrison?
Average temperature in December
West Harrison, IN
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
West Harrison, IN
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
West Harrison, IN
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
West Harrison, IN
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
West Harrison, IN
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in December
West Harrison, IN
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (8 days).
Average snowfall in December
West Harrison, IN
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
West Harrison, IN
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.8 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
West Harrison, IN
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
West Harrison, IN
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (10 days).
Average UV index in December
West Harrison, IN
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
West Harrison, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
West Harrison, 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).
West Harrison, Indiana, USA
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