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 indicates a shift in the average high-temperature, from November's fresh 53.6°F (12°C) to a frosty 43.2°F (6.2°C). In Valmeyer, an average temperature of 30.9°F (-0.6°C) is noted during December nights.Humidity
The average relative humidity in December is 76%.Rainfall
In Valmeyer, during December, the rain falls for 8.1 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, there are 139.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. In Valmeyer, in December, snow falls for 3.5 days, with typically accumulated 1.54" (39mm) of snow. Throughout the year, in Valmeyer, there are 18.7 snowfall days, and 6.65" (169mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:51 pm CST.
Sunshine
In Valmeyer, the average sunshine in December is 5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Valmeyer, Illinois. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
How cold is December in Valmeyer?
What is the average humidity in December in Valmeyer?
How much does it rain in Valmeyer in December?
How many days does it snow in December in Valmeyer?
What is the month with the shortest days in Valmeyer?
What is the average length of the day in December in Valmeyer?
When is the sunrise / sunset in December in Valmeyer?
How many hours of sunshine does Valmeyer have in December?
When is the lowest UV index in Valmeyer?
What is the UV index reading in December in Valmeyer?
Average temperature in December
Valmeyer, IL
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Valmeyer, 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 (29.92"Hg).
Average wind speed in December
Valmeyer, IL
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Valmeyer, IL
- Average humidity in December: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Valmeyer, IL
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are February and November (1.34").
Average rainfall days in December
Valmeyer, IL
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Valmeyer, IL
- Average snowfall in December: 1.54"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Valmeyer, IL
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Valmeyer, IL
- Average daylight in December: 9h and 4min
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 36min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Valmeyer, IL
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in December
Valmeyer, 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 and December (UV index 2).
Average cloud cover in December
Valmeyer, IL
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in December
Valmeyer, 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).
Valmeyer, Illinois, USA
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