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 chilly 43.5°F (6.4°C) in November to a subzero cold 29.7°F (-1.3°C). The average temperature during December nights dips to a still freezing cold 19°F (-7.2°C).Humidity
In December, the average relative humidity is 84%.Rainfall
In Coulter, during December, the rain falls for 5.8 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 146.2 rainfall days, and 29.69" (754mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Coulter. In Coulter, in December, snow falls for 13 days, with typically accumulated 4.13" (105mm) of snow. In Coulter, during the entire year, snow falls for 56 days and aggregates up to 24.45" (621mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:24 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:49 pm CST.
Sunshine
In Coulter, the average sunshine in December is 4.3h.UV index
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 unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Enhance your sun protection with tightly woven, yet airy clothing. Warning! The reflection from snow can nearly 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 many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Coulter have in December?
What time are sunrise and sunset in December in Coulter?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Coulter, IA
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in December
Coulter, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Coulter, IA
- Average wind speed in December: 10.4mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in December
Coulter, IA
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Coulter, IA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is June (4.69").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Coulter, IA
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is June (20.2 days).
The month with the least rainy days is February (4 days).
Average snowfall in December
Coulter, IA
- Average snowfall in December: 4.13"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Coulter, IA
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Coulter, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Coulter, IA
- Average sunshine days in December: 16 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in December
Coulter, IA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Coulter, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Coulter, IA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Coulter, Iowa, USA
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