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 average high-temperature decreases in December, shifting from a fresh 51.8°F (11°C) in November to a wintry 41°F (5°C). In the month of December, the nighttime temperature dips to a steady average of 29.5°F (-1.4°C).Humidity
In Ramsey, the average relative humidity in December is 78%.Rainfall
In Ramsey, in December, it is raining for 9.7 days, with typically 2.44" (62mm) of accumulated precipitation. In Ramsey, during the entire year, the rain falls for 164.1 days and collects up to 36.73" (933mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. December is the month with the most snowfall. Snow falls for 5.1 days and accumulates 2.4" (61mm) 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 6:57 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine 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. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Ramsey have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Ramsey have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Ramsey, IL
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Ramsey, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Ramsey, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Ramsey, IL
- Average humidity in December: 78%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Ramsey, IL
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in December
Ramsey, IL
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Ramsey, IL
- Average snowfall in December: 2.4"
The month with the highest snowfall is December (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Ramsey, IL
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is January (8.3 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
Ramsey, 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 4min
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 18min).
Average sunshine days in December
Ramsey, IL
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in December
Ramsey, IL
- Average UV index in December: 2
The months with the highest UV index are 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
Ramsey, 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, July and September (Cloud cover 30).
Average visibility in December
Ramsey, 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).
Ramsey, Illinois, USA
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