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 in Boone corresponds with a temperature reduction, down from November's chilly 45.5°F (7.5°C) to a cold 32.2°F (0.1°C). Throughout December, Boone encounters an average temperature drop to a subzero cold 21°F (-6.1°C).Humidity
The average relative humidity in December in Boone, Iowa, is 81%.Rainfall
In December, the rain falls for 4.7 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. In Boone, during the entire year, the rain falls for 123.3 days and collects up to 20.98" (533mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Boone, Iowa, it is snowing for 8.6 days. Throughout December, 1.73" (44mm) of snow is accumulated. Throughout the year, there are 39.9 snowfall days, and 10.91" (277mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:24 am and sunset at 4:44 pm. On the last day of December, in Boone, sunrise is at 7:43 am and sunset at 4:54 pm CST.
Sunshine
The average sunshine in December in Boone is 4.6h.UV index
The months with the lowest UV index in Boone are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Boone?
What is the average humidity in December in Boone?
How much does it rain in Boone in December?
How much does it snow in Boone in December?
What is the month with the shortest days in Boone?
What is the average length of the day in December in Boone?
What time are sunrise and sunset in December in Boone?
How long on average sun shines in December in Boone?
When is the lowest UV index in Boone?
What is the UV index reading in December in Boone?
Average temperature in December
Boone, IA
- Average high temperature in December: 32.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in December: 21°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 (13.1°F).
Average pressure in December
Boone, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Boone, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Boone, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Boone, IA
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Boone, IA
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in December
Boone, IA
- Average snowfall in December: 1.73"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Boone, IA
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Boone, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Boone, IA
- Average sunshine days in December: 19 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in December
Boone, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Boone, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Boone, IA
- 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).
Boone, Iowa, USA
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