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
Onset of December witnesses a reduction in the average high-temperature, falling from a frosty 46.6°F (8.1°C) in November to a wintry 33.4°F (0.8°C). Throughout the month of December, Earlham sees a steady low-temperature average of 22.3°F (-5.4°C).Humidity
In Earlham, the average relative humidity in December is 78%.Rainfall
In Earlham, during December, the rain falls for 3.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 112.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, in Earlham, Iowa, it is snowing for 5.7 days. Throughout December, 0.87" (22mm) of snow is accumulated. In Earlham, during the entire year, snow falls for 32 days and aggregates up to 7.32" (186mm) 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 Earlham, sunrise is at 7:24 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:56 pm CST.
Sunshine
In Earlham, the average sunshine in December is 4.8h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Earlham?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Earlham have in December?
What is the UV index reading in December?
Average temperature in December
Earlham, IA
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 22.3°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
Earlham, 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 (29.88"Hg).
Average wind speed in December
Earlham, IA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Earlham, IA
- Average humidity in December: 78%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Earlham, IA
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Earlham, IA
- Average rainfall days in December: 3.9 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Earlham, IA
- Average snowfall in December: 0.87"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Earlham, 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 June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Earlham, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Earlham, IA
- Average sunshine days in December: 21.9 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in December
Earlham, 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
Earlham, IA
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Earlham, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Earlham, Iowa, USA
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