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 commencement of December involves a temperature shift, with the average high-temperature dropping from a fresh 51.8°F (11°C) in November to an icy 40.6°F (4.8°C). The nighttime temperature dips to a subzero cold 29.3°F (-1.5°C) on average during December.Humidity
The average relative humidity in December is 77%.Rainfall
In Otterville, in December, during 7.5 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Otterville, during the entire year, the rain falls for 136.5 days and collects up to 23.11" (587mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Otterville. In Otterville, in December, snow falls for 4.4 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, in Otterville, there are 20.9 snowfall days, and 6.26" (159mm) of snow is accumulated.Daylight
The month with the shortest days in Otterville is December, with an average of 9h and 30min of daylight.On the first day of December in Otterville, sunrise is at 7:02 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:49 pm CST.
Sunshine
In Otterville, Illinois, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index 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 unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. To guard against the harmful effects of the Sun, minimize exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
How cold does it get in Otterville in December?
What is the average humidity in December in Otterville?
How many days does it rain in December in Otterville?
How much does it snow in Otterville in December?
What is the month with the shortest days in Otterville?
What is the average length of the day in December in Otterville?
When is the sunrise / sunset in December in Otterville?
How long on average sun shines in December in Otterville?
What is the month with the lowest UV index in Otterville?
How high is the UV index in December in Otterville?
Average temperature in December
Otterville, IL
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
Otterville, 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 (29.92"Hg).
Average wind speed in December
Otterville, IL
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Otterville, IL
- Average humidity in December: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Otterville, IL
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.07").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
Otterville, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Otterville, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Otterville, IL
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is January (6.2 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
Otterville, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Otterville, IL
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and June (12.3 days).
Average UV index in December
Otterville, 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
Otterville, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).
Average visibility in December
Otterville, 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).
Otterville, Illinois, USA
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