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
In December, the meteorological conditions alter, with the average high-temperature shifting from a fresh 50.9°F (10.5°C) in November to a wintry 40.6°F (4.8°C). During December, Napoleon's temperature falls to a steady low-temperature average of 29.7°F (-1.3°C).Humidity
With an average relative humidity of 82%, December is the most humid month.Rainfall
In December, in Napoleon, Indiana, the rain falls for 11.2 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 169.3 rainfall days, and 36.18" (919mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Napoleon, Indiana, during December, snow falls for 6.8 days and regularly aggregates up to 2.13" (54mm) of snow. In Napoleon, during the entire year, snow falls for 31.2 days and aggregates up to 11.42" (290mm) of snow.Daylight
December has the shortest days of the year in Napoleon, Indiana, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 5:18 pm. On the last day of December, in Napoleon, sunrise is at 8:00 am and sunset at 5:28 pm EST.
Sunshine
The average sunshine in December is 4.2h.UV index
The month with the lowest UV index in Napoleon is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December translates into these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold does it get in Napoleon in December?
What is the most humid month in Napoleon?
What is the average humidity in December in Napoleon?
How much does it rain in Napoleon in December?
How much does it snow in Napoleon in December?
What is the month with the shortest days in Napoleon?
What is the average length of the day in December in Napoleon?
What time are sunrise and sunset in December in Napoleon?
How long on average sun shines in December in Napoleon?
What is the month with the lowest UV index in Napoleon?
What is the UV index reading in December in Napoleon?
Average temperature in December
Napoleon, IN
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.7°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 (22.8°F).
Average pressure in December
Napoleon, 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
Napoleon, IN
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Napoleon, IN
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Napoleon, IN
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in December
Napoleon, IN
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Napoleon, IN
- Average snowfall in December: 2.13"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Napoleon, IN
- Average snowfall days in December: 6.8 days
The month with the highest number of snowfall days is January (8.1 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
Napoleon, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Napoleon, IN
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in December
Napoleon, 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
Napoleon, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Napoleon, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Napoleon, Indiana, USA
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