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 Long Grove, the average high-temperature in December decreases from a chilly 46.4°F (8°C) in November to a wintry 34°F (1.1°C). During December, Long Grove observes a consistent average nighttime temperature of 23.4°F (-4.8°C).Humidity
The average relative humidity in December in Long Grove is 81%.Rainfall
The month with the least rainfall in Long Grove, Iowa, is December, when the rain falls for 4.7 days and typically collects 0.51" (13mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Long Grove. In December, it is snowing for 6.5 days. Throughout December, 0.63" (16mm) of snow is accumulated. Throughout the year, there are 30.5 snowfall days, and 6.18" (157mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:42 pm CST.
Sunshine
In Long Grove, the average sunshine in December is 4.4h.UV index
In Long Grove, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold is December in Long Grove?
What is the average humidity in December in Long Grove?
What is the driest month in Long Grove?
How many days does it rain in December in Long Grove?
How many days does it snow in December in Long Grove?
What is the month with the shortest days in Long Grove?
How many hours of daylight does Long Grove have in December?
When are sunrise and sunset in December in Long Grove?
How many hours of sunshine does Long Grove have in December?
What is the UV index intensity in December in Long Grove?
Average temperature in December
Long Grove, IA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Long Grove, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Long Grove, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Long Grove, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Long Grove, IA
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is December (0.51").
Average rainfall days in December
Long Grove, IA
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in December
Long Grove, IA
- Average snowfall in December: 0.63"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Long Grove, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (9.3 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
Long Grove, IA
- 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 12min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Long Grove, IA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in December
Long Grove, IA
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Long Grove, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in December
Long Grove, IA
- 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).
Long Grove, Iowa, USA
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