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 moderate decline in the average high-temperature is seen during December, decreasing from a fresh 53.2°F (11.8°C) in November to a frosty 43.5°F (6.4°C). Throughout December, the nighttime temperature averages to a cold 32.2°F (0.1°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Saint James, in December, during 8.7 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Saint James, during the entire year, the rain falls for 133.6 days and collects up to 19.33" (491mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In December, it is snowing for 3.7 days. Throughout December, 0.47" (12mm) of snow is accumulated. Throughout the year, there are 18 snowfall days, and 3.35" (85mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 6:48 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:40 pm CST.
Sunshine
In Saint James, the average sunshine in December is 4.5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Saint James have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Saint James, IN
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.1°F).
- Average low temperature in December: 32.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Saint James, IN
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Saint James, IN
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in December
Saint James, IN
- Average humidity in December: 78%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Saint James, IN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is April (2.28").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in December
Saint James, IN
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Saint James, IN
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Saint James, IN
- Average snowfall days in December: 3.7 days
The months with the highest number of snowfall days are January and February (5.1 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
Saint James, IN
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Saint James, IN
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in December
Saint James, IN
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Saint James, IN
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in December
Saint James, IN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint James, Indiana, USA
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