December weather forecastPetersburg, IN
December
Weather in December
The first month of the winter, December, is also an icy month in Petersburg, Indiana, with temperature in the range of an average low of 31.3°F (-0.4°C) and an average high of 42.6°F (5.9°C).Temperature
In Petersburg, the beginning of December is marked by a lowered average high-temperature, shifting from November's cool 52.7°F (11.5°C) to an icy 42.6°F (5.9°C). During the nights in December, Petersburg experiences a consistent average temperature of 31.3°F (-0.4°C).Humidity
In Petersburg, the average relative humidity in December is 79%.Rainfall
In Petersburg, in December, during 10.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 151.2 rainfall days, and 26.3" (668mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Petersburg, during December, snow falls for 5.4 days and regularly aggregates up to 0.71" (18mm) of snow. In Petersburg, during the entire year, snow falls for 23.8 days and aggregates up to 5.08" (129mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:48 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 5:38 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 4.4h of sunshine.UV index
The months with the lowest UV index in Petersburg are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. 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
Average temperature in December
Petersburg, IN
- Average high temperature in December: 42.6°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 (37.9°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Petersburg, 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
Petersburg, IN
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are January, February and April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Petersburg, IN
- Average humidity in December: 79%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Petersburg, IN
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is April (3.19").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in December
Petersburg, IN
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in December
Petersburg, IN
- Average snowfall in December: 0.71"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Petersburg, IN
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (6.8 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
Petersburg, IN
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 4h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Petersburg, IN
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in December
Petersburg, 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, November and December (UV index 2).
Average cloud cover in December
Petersburg, IN
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are June and August (Cloud cover 29).
Average visibility in December
Petersburg, 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).
