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 brings a drop in Annapolis's average high-temperature, falling from a fresh 51.3°F (10.7°C) in November to an icy 41°F (5°C). Annapolis experiences an average low-temperature of 29.7°F (-1.3°C) in month of December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Annapolis, Illinois, in December, it is raining for 9.8 days, with typically 2.24" (57mm) of accumulated precipitation. In Annapolis, during the entire year, the rain falls for 147.2 days and collects up to 27.87" (708mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Annapolis. In Annapolis, in December, during 5 snowfall days, 1.3" (33mm) of snow is typically accumulated. Throughout the year, there are 21.1 snowfall days, and 5.16" (131mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:38 pm CST.
Sunshine
In Annapolis, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index in Annapolis are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Annapolis in December?
What is the average humidity in December in Annapolis?
How much does it rain in Annapolis in December?
How many days does it snow in December in Annapolis?
What is the month with the shortest days in Annapolis?
How many hours of daylight does Annapolis have in December?
When is the sunrise / sunset in December in Annapolis?
How many hours of sunshine does Annapolis have in December?
What is the month with the lowest UV index in Annapolis?
What is the UV index intensity in December in Annapolis?
Average temperature in December
Annapolis, IL
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Annapolis, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Annapolis, IL
- Average wind speed in December: 9.2mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Annapolis, IL
- Average humidity in December: 79%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Annapolis, IL
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Annapolis, IL
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Annapolis, IL
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Annapolis, IL
- Average snowfall days in December: 5 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Annapolis, IL
- 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Annapolis, IL
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Annapolis, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Annapolis, IL
- Average cloud cover in December: 53
The months with the most cloud cover are January and February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Annapolis, IL
- 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).
Annapolis, Illinois, USA
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