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
A subtle decrease in the average high-temperature marks December, falling from November's chilly 46.4°F (8°C) to an icy 36.3°F (2.4°C). Porter consistently logs a low temperature averaging a subzero cold 27.7°F (-2.4°C) during December, a modest drop from daytime temperatures.Humidity
In Porter, the average relative humidity in December is 81%.Rainfall
January and December are months with the least rain in Porter when the rain falls for 9.4 days and typically aggregates up to 1.14" (29mm) of rain.Snowfall
Months with snowfall in Porter are January through April, November and December. In Porter, in December, snow falls for 10.3 days, with typically accumulated 1.77" (45mm) of snow. In Porter, during the entire year, snow falls for 47.9 days and aggregates up to 10.55" (268mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:56 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:28 pm CST.
Sunshine
The average sunshine in December is 3.8h.UV index
December is the month with the lowest UV index in Porter, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 during December translates into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold is December in Porter?
What is the average humidity in December in Porter?
What is the driest month in Porter?
How much does it rain in Porter in December?
How much does it snow in Porter in December?
What is the month with the shortest days in Porter?
How many hours of daylight does Porter have in December?
What time are sunrise and sunset in December in Porter?
How long on average sun shines in December in Porter?
What is the month with the lowest UV index in Porter?
How high is the UV index in December in Porter?
Average temperature in December
Porter, IN
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
Porter, IN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Porter, IN
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is January (12mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Porter, IN
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Porter, IN
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are January and December (1.14").
Average rainfall days in December
Porter, IN
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Porter, IN
- Average snowfall in December: 1.77"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Porter, IN
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (14.1 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
Porter, IN
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Porter, IN
- Average sunshine days in December: 13.1 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Porter, 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
Porter, IN
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Porter, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Porter, Indiana, USA
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