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 Spring Grove, the average high-temperature in December decreases from a frosty 44.4°F (6.9°C) in November to a wintry 32.5°F (0.3°C). In December, in Spring Grove, Illinois, the average low-temperature is 22.8°F (-5.1°C).Humidity
In December, the average relative humidity in Spring Grove is 82%.Rainfall
December is the month with the least rainfall in Spring Grove. Rain falls for 6 days and accumulates 1.06" (27mm) of precipitation.Snowfall
Months with snowfall in Spring Grove are January through May, October through December. In Spring Grove, in December, during 7.8 snowfall days, 2.28" (58mm) of snow is typically accumulated. Throughout the year, there are 38.2 snowfall days, and 15.59" (396mm) of snow is accumulated.Daylight
With an average of 9h and 8min of daylight, December has the shortest days of the year in Spring Grove.On the first day of the month, sunrise is at 7:02 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:29 pm CST.
Sunshine
In Spring Grove, the average sunshine in December is 3.9h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the temperature in December in Spring Grove?
What is the average humidity in December in Spring Grove?
What is the driest month in Spring Grove?
How many days does it rain in December in Spring Grove?
How much does it snow in Spring Grove in December?
What is the month with the shortest days in Spring Grove?
How many hours of daylight does Spring Grove have in December?
When is the sunrise / sunset in December in Spring Grove?
How long on average sun shines in December in Spring Grove?
What are the months with the lowest UV index in Spring Grove?
What is the UV index reading in December in Spring Grove?
Average temperature in December
Spring Grove, IL
- Average high temperature in December: 32.5°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Spring Grove, IL
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Spring Grove, IL
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Spring Grove, IL
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Spring Grove, IL
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is December (1.06").
Average rainfall days in December
Spring Grove, IL
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in December
Spring Grove, IL
- Average snowfall in December: 2.28"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Spring Grove, IL
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Spring Grove, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in December
Spring Grove, IL
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in December
Spring Grove, IL
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Spring Grove, IL
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in December
Spring Grove, 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).
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