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 signals a clear temperature drop, with average high-temperatures decreasing from November's chilly 44.8°F (7.1°C) to a freezing cold 30°F (-1.1°C). Barnum's average low-temperature in the month of December is recorded at a still subzero cold 19.4°F (-7°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Barnum, during December, the rain falls for 2.5 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 84.6 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Snowfall
Months with snowfall in Barnum are January through April, October through December. In Barnum, Iowa, during December, snow falls for 5.5 days and regularly aggregates up to 0.31" (8mm) of snow. In Barnum, during the entire year, snow falls for 29.4 days and aggregates up to 3.62" (92mm) of snow.Daylight
December has the shortest days of the year in Barnum, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:54 pm CST.
Sunshine
The average sunshine in December in Barnum is 4.6h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the UV index of 2 transforms into the following advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
How cold is it in Barnum in December?
What is the average humidity in December in Barnum?
How much does it rain in Barnum in December?
How much does it snow in Barnum in December?
What is the month with the shortest days in Barnum?
How many hours of daylight does Barnum have in December?
What time are sunrise and sunset in December in Barnum?
How many hours of sunshine does Barnum have in December?
How high is the UV index in December in Barnum?
Average temperature in December
Barnum, IA
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Barnum, 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
Barnum, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in December
Barnum, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Barnum, IA
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Barnum, IA
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (12 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Barnum, IA
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Barnum, IA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Barnum, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Barnum, IA
- Average sunshine days in December: 24.3 days
The month with the most sunshine days is December (24.3 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in December
Barnum, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Barnum, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Barnum, 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).
Barnum, Iowa, USA
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