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 brings a decrease in the average high-temperature, falling from November's frosty 48.2°F (9°C) to an icy 37.6°F (3.1°C). Round Grove encounters a steady low-temperature average of 27.1°F (-2.7°C) throughout the month of December.Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 7.4 days. Throughout December, 0.98" (25mm) of precipitation is accumulated. In Round Grove, during the entire year, the rain falls for 130.9 days and collects up to 18.23" (463mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Round Grove. In Round Grove, Indiana, in December, snow falls for 4.7 days, with typically accumulated 1.18" (30mm) of snow. In Round Grove, during the entire year, snow falls for 28.3 days and aggregates up to 7.36" (187mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:53 am and sunset at 5:21 pm. On the last day of December, sunrise is at 8:11 am and sunset at 5:31 pm EST.
Sunshine
In Round Grove, the average sunshine in December is 4.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 1 during December leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Round Grove have in December?
When is the lowest UV index?
How high is the UV index in December in Round Grove?
Average temperature in December
Round Grove, IN
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in December: 27.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Round Grove, IN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Round Grove, IN
- Average wind speed in December: 9.6mph
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 (6.3mph).
Average humidity in December
Round Grove, IN
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Round Grove, IN
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are February and November (0.94").
Average rainfall days in December
Round Grove, IN
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (5.1 days).
Average snowfall in December
Round Grove, IN
- Average snowfall in December: 1.18"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Round Grove, IN
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Round Grove, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Round Grove, IN
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in December
Round Grove, IN
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Round Grove, IN
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are June, August and September (Cloud cover 34).
Average visibility in December
Round Grove, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Round Grove, Indiana, USA
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