December weather forecastPorter, IN
December
Weather in December
December, the first month of the winter in Porter, is also an icy month, with an average temperature fluctuating between 36.3°F (2.4°C) and 27.7°F (-2.4°C).Temperature
The transition into December indicates a reduction in the average high-temperature, down to an icy 36.3°F (2.4°C) from November's frosty 46.4°F (8°C). Porter's nighttime average temperature in December drops marginally from the daytime highs, settling at a freezing cold 27.7°F (-2.4°C).Humidity
The average relative humidity in December is 81%.Rainfall
The months with the least rainfall are January and December Rain falls for 9.4 days and accumulates 1.14" (29mm) of rain.Snowfall
Months with snowfall are January through April, November and December. In Porter, in December, during 10.3 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Porter, during the entire year, snow falls for 47.9 days and aggregates up to 10.55" (268mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.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
In Porter, the average sunshine in December is 3.8h.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 minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 12min
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 48min
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).
