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 the transition to December, Allendale observes a drop in the average high-temperature, moving from a cool 52.9°F (11.6°C) in November to a frosty 42.8°F (6°C). During December, Allendale sees a mean low-temperature of 31.3°F (-0.4°C).Humidity
In Allendale, the average relative humidity in December is 78%.Rainfall
In Allendale, in December, it is raining for 10.3 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, there are 155.6 rainfall days, and 34.65" (880mm) of precipitation is accumulated.Snowfall
Months with snowfall in Allendale are January through April, November and December. In Allendale, in December, during 4.2 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Allendale, during the entire year, snow falls for 21 days and aggregates up to 5.39" (137mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:50 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:40 pm CST.
Sunshine
In December, the average sunshine in Allendale, Illinois, is 4.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Allendale. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold does it get in Allendale in December?
What is the average humidity in December in Allendale?
How many days does it rain in December in Allendale?
How many days does it snow in December in Allendale?
What is the month with the shortest days in Allendale?
How many hours of daylight does Allendale have in December?
When is the sunrise / sunset in December in Allendale?
How long on average sun shines in December in Allendale?
When is the lowest UV index in Allendale?
What is the UV index reading in December in Allendale?
Average temperature in December
Allendale, IL
- Average high temperature in December: 42.8°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 (37.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Allendale, IL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Allendale, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in December
Allendale, IL
- Average humidity in December: 78%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Allendale, IL
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Allendale, IL
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Allendale, IL
- Average snowfall in December: 1.14"
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Allendale, IL
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.8 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
Allendale, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Allendale, IL
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in December
Allendale, 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
Allendale, IL
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Allendale, 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).
Allendale, Illinois, USA
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