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
December's arrival corresponds with a decrease in average high-temperatures, from November's frosty 46.9°F (8.3°C) to a cold 34°F (1.1°C). Pleasant Hill's nights in December cool down to an average low-temperature of 22.1°F (-5.5°C).Humidity
The average relative humidity in December is 79%.Rainfall
The months with the least rainfall are January, February and December Rain falls for 2.5 days and accumulates 0.24" (6mm) of rain.Snowfall
Months with snowfall in Pleasant Hill are January through April, October through December. In Pleasant Hill, in December, during 4.2 snowfall days, 0.24" (6mm) of snow is typically accumulated. In Pleasant Hill, Iowa, during the entire year, snow falls for 22 days and aggregates up to 2.44" (62mm) of snow.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 Pleasant Hill, sunrise is at 7:21 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:54 pm CST.
Sunshine
In Pleasant Hill, Iowa, the average sunshine in December is 4.7h.UV index
In Pleasant Hill, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Pleasant Hill?
What is the average humidity in December in Pleasant Hill?
What is the driest month in Pleasant Hill?
How many days does it rain in December in Pleasant Hill?
How many days does it snow in December in Pleasant Hill?
What is the month with the shortest days in Pleasant Hill?
What is the average length of the day in December in Pleasant Hill?
When is the sunrise / sunset in December in Pleasant Hill?
How long on average sun shines in December in Pleasant Hill?
What is the UV index intensity in December in Pleasant Hill?
Average temperature in December
Pleasant Hill, IA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 22.1°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 (14.4°F).
Average pressure in December
Pleasant Hill, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Pleasant Hill, IA
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Pleasant Hill, IA
- Average humidity in December: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Pleasant Hill, IA
- Average rainfall in December: 0.24"
The wettest month (with the highest rainfall) is May (0.98").
The driest months (with the least rainfall) are January, February and December (0.24").
Average rainfall days in December
Pleasant Hill, IA
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is May (11.6 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in December
Pleasant Hill, IA
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pleasant Hill, IA
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pleasant Hill, 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Pleasant Hill, IA
- Average sunshine days in December: 25.5 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in December
Pleasant Hill, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Pleasant Hill, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in December
Pleasant Hill, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Pleasant Hill, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location