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 fresh 51.3°F (10.7°C) to an icy 41.4°F (5.2°C). During the month of December, the nighttime temperature in San Jacinto falls to an average of 30°F (-1.1°C).Humidity
January, February and December, with an average relative humidity of 81%, are the most humid months in San Jacinto, Indiana.Rainfall
In San Jacinto, in December, during 10.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 153.7 rainfall days, and 29.57" (751mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in San Jacinto. In San Jacinto, in December, during 7.1 snowfall days, 1.65" (42mm) of snow is typically accumulated. Throughout the year, there are 31.7 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
The month with the shortest days in San Jacinto is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:42 am and sunset at 5:20 pm. On the last day of December, sunrise is at 8:00 am and sunset at 5:30 pm EST.
Sunshine
In San Jacinto, the average sunshine in December is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in San Jacinto, Indiana. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold is December in San Jacinto?
What is the most humid month in San Jacinto?
What is the average humidity in December in San Jacinto?
How many days does it rain in December in San Jacinto?
How many days does it snow in December in San Jacinto?
What is the month with the shortest days in San Jacinto?
How many hours of daylight does San Jacinto have in December?
What time are sunrise and sunset in December in San Jacinto?
How many hours of sunshine does San Jacinto have in December?
What is the month with the lowest UV index in San Jacinto?
How high is the UV index in December in San Jacinto?
Average temperature in December
San Jacinto, IN
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
San Jacinto, IN
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
San Jacinto, IN
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January, February and April (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
San Jacinto, IN
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
San Jacinto, IN
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
San Jacinto, IN
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
San Jacinto, IN
- Average snowfall in December: 1.65"
The month with the highest snowfall is March (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
San Jacinto, IN
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (8.3 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
San Jacinto, IN
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
San Jacinto, IN
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
San Jacinto, IN
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
San Jacinto, IN
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
San Jacinto, IN
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, June, October and November (6mi).
The months with the lowest visibility are February, May, July, August, September and December (5mi).
San Jacinto, Indiana, USA
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