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
Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 47.3°F (8.5°C) in November to a cold 34.9°F (1.6°C). An average low-temperature of 24.1°F (-4.4°C) is noted during the month of December.Humidity
In December, the average relative humidity in West Chester is 81%.Rainfall
December is the month with the least rainfall in West Chester. Rain falls for 5.8 days and accumulates 0.71" (18mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in West Chester. In West Chester, during December, snow falls for 5.7 days and regularly aggregates up to 0.79" (20mm) of snow. In West Chester, Iowa, during the entire year, snow falls for 29.8 days and aggregates up to 7.99" (203mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 4:38 pm. On the last day of December, in West Chester, sunrise is at 7:33 am and sunset at 4:48 pm CST.
Sunshine
In West Chester, the average sunshine in December is 4.6h.UV index
In West Chester, Iowa, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in West Chester?
What is the average humidity in December in West Chester?
What is the driest month in West Chester?
How many days does it rain in December in West Chester?
How many days does it snow in December in West Chester?
What is the month with the shortest days in West Chester?
How many hours of daylight does West Chester have in December?
When is the sunrise / sunset in December in West Chester?
How many hours of sunshine does West Chester have in December?
What is the UV index reading in December in West Chester?
Average temperature in December
West Chester, IA
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
West Chester, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
West Chester, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
West Chester, IA
- Average humidity in December: 81%
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
West Chester, IA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in December
West Chester, IA
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
West Chester, IA
- Average snowfall in December: 0.79"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
West Chester, IA
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (8.9 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
West Chester, IA
- 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: 4h and 4min
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 12min).
Average sunshine days in December
West Chester, IA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
West Chester, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
West Chester, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in December
West Chester, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
West Chester, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
