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
In December, the average high-temperature decreases from a frosty 46.4°F (8°C) in November to a wintry 35.2°F (1.8°C). Cromwell experiences an average nighttime temperature of 25.7°F (-3.5°C) in the month of December.Humidity
In December, the average relative humidity is 84%.Rainfall
December is the month with the least rainfall. Rain falls for 9.5 days and accumulates 1.61" (41mm) of precipitation.Snowfall
Months with snowfall in Cromwell are January through May, October through December. In Cromwell, in December, snow falls for 12.4 days, with typically accumulated 2.72" (69mm) of snow. Throughout the year, in Cromwell, there are 56.9 snowfall days, and 15.79" (401mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December in Cromwell, sunrise is at 7:49 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 5:23 pm EST.
Sunshine
In December, the average sunshine is 3.5h.UV index
The months with the lowest UV index in Cromwell are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Cromwell?
What is the average humidity in December in Cromwell?
What is the driest month in Cromwell?
How much does it rain in Cromwell in December?
How much does it snow in Cromwell in December?
What is the month with the shortest days in Cromwell?
How many hours of daylight does Cromwell have in December?
When are sunrise and sunset in December in Cromwell?
How many hours of sunshine does Cromwell have in December?
What are the months with the lowest UV index in Cromwell?
How high is the UV index in December in Cromwell?
Average temperature in December
Cromwell, IN
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Cromwell, IN
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Cromwell, IN
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Cromwell, IN
- Average humidity in December: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Cromwell, IN
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in December
Cromwell, IN
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in December
Cromwell, IN
- Average snowfall in December: 2.72"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cromwell, IN
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cromwell, IN
- Average daylight in December: 9h and 1min
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 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Cromwell, IN
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (8.9 days).
Average UV index in December
Cromwell, IN
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Cromwell, IN
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Cromwell, IN
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Cromwell, Indiana, USA
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