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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 48.2°F (9°C) to an icy 37.6°F (3.1°C). An average temperature of 27.3°F (-2.6°C) marks the nights in December.Humidity
In Altamont Switch, the average relative humidity in December is 81%.Rainfall
In Altamont Switch, in December, it is raining for 8.9 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 153.1 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Snowfall
Months with snowfall in Altamont Switch are January through April, November and December. In Altamont Switch, in December, during 9.1 snowfall days, 1.73" (44mm) of snow is typically accumulated. Throughout the year, in Altamont Switch, there are 38.6 snowfall days, and 8.39" (213mm) of snow is accumulated.Daylight
December has the shortest days of the year in Altamont Switch, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:51 am and sunset at 5:21 pm. On the last day of December, sunrise is at 8:10 am and sunset at 5:31 pm EST.
Sunshine
In December, the average sunshine is 4.3h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Altamont Switch?
What is the average humidity in December in Altamont Switch?
How much does it rain in Altamont Switch in December?
How many days does it snow in December in Altamont Switch?
What is the month with the shortest days in Altamont Switch?
What is the average length of the day in December in Altamont Switch?
When is the sunrise / sunset in December in Altamont Switch?
How long on average sun shines in December in Altamont Switch?
What is the month with the lowest UV index in Altamont Switch?
What is the UV index reading in December in Altamont Switch?
Average temperature in December
Altamont Switch, 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 (31.8°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Altamont Switch, 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
Altamont Switch, 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 (6.2mph).
Average humidity in December
Altamont Switch, 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 (73%).
Average rainfall in December
Altamont Switch, IN
- Average rainfall in December: 1.34"
The wettest months (with the highest rainfall) are April and May (2.8").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in December
Altamont Switch, IN
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Altamont Switch, IN
- Average snowfall in December: 1.73"
The months with the highest snowfall are January and February (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Altamont Switch, IN
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altamont Switch, 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 months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Altamont Switch, IN
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Altamont Switch, 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
Altamont Switch, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 33).
Average visibility in December
Altamont Switch, 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).
Altamont Switch, Indiana, USA
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