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 Summitville, the beginning of December is marked by a lowered average high-temperature, shifting from November's frosty 48.4°F (9.1°C) to an icy 37.6°F (3.1°C). Throughout December, Summitville's nights cool down to an average of 27.5°F (-2.5°C).Humidity
January and December, with an average relative humidity of 83%, are the most humid months.Rainfall
In Summitville, in December, it is raining for 5.5 days, with typically 0.55" (14mm) of accumulated precipitation. In Summitville, during the entire year, the rain falls for 87.4 days and collects up to 6.46" (164mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 5.6 days and typically aggregates up to 0.51" (13mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:46 am and sunset at 5:16 pm. On the last day of December, in Summitville, sunrise is at 8:05 am and sunset at 5:26 pm EST.
Sunshine
In Summitville, the average sunshine in December is 4.1h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Summitville have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Summitville, IN
- Average high temperature in December: 37.6°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 (32°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
Summitville, 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
Summitville, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Summitville, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Summitville, IN
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is May (0.75").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Summitville, IN
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (10.6 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Summitville, IN
- Average snowfall in December: 0.51"
The month with the highest snowfall is December (0.51").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Summitville, IN
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Summitville, 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 24min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Summitville, IN
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is December (22.8 days).
The month with the least sunshine days is May (15.4 days).
Average UV index in December
Summitville, IN
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Summitville, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are June, July and August (Cloud cover 32).
Average visibility in December
Summitville, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Summitville, Indiana, USA
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