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 in New Castle, falling from November's frosty 48.6°F (9.2°C) to a wintry 37.9°F (3.3°C). An average low-temperature of 27.9°F (-2.3°C) is recorded in the month of December in New Castle, Indiana.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 83%.Rainfall
In New Castle, in December, it is raining for 10.3 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 169.4 rainfall days, and 31.77" (807mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In New Castle, in December, snow falls for 9.9 days, with typically accumulated 3.27" (83mm) of snow. In New Castle, during the entire year, snow falls for 42.7 days and aggregates up to 13.82" (351mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:44 am and sunset at 5:16 pm. On the last day of December, sunrise is at 8:02 am and sunset at 5:26 pm EST.
Sunshine
The average sunshine in December in New Castle is 4h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in New Castle?
What is the most humid month in New Castle?
What is the average humidity in December in New Castle?
How many days does it rain in December in New Castle?
How many days does it snow in December in New Castle?
What is the month with the shortest days in New Castle?
What is the average length of the day in December in New Castle?
What time are sunrise and sunset in December in New Castle?
How long on average sun shines in December in New Castle?
What is the month with the lowest UV index in New Castle?
How high is the UV index in December in New Castle?
Average temperature in December
New Castle, IN
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in December
New Castle, IN
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
New Castle, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
New Castle, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
New Castle, IN
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in December
New Castle, IN
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in December
New Castle, IN
- Average snowfall in December: 3.27"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
New Castle, IN
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
New Castle, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
New Castle, IN
- Average sunshine days in December: 13 days
The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in December
New Castle, IN
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
New Castle, IN
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
New Castle, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
New Castle, Indiana, USA
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