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
The shift from November to December involves a decrease in the average high-temperature, from a frosty 44.1°F (6.7°C) to a freezing cold 30°F (-1.1°C). During December, the nighttime temperature in Arnold averages of 19°F (-7.2°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Arnold, Iowa, in December, it is raining for 5.1 days, with typically 1.26" (32mm) of accumulated precipitation. In Arnold, Iowa, during the entire year, the rain falls for 130.6 days and collects up to 25" (635mm) of precipitation.Snowfall
Months with snowfall in Arnold are January through May, October through December. In Arnold, in December, snow falls for 9.3 days, with typically accumulated 2.76" (70mm) of snow. In Arnold, during the entire year, snow falls for 41.2 days and aggregates up to 18.11" (460mm) of snow.Daylight
The month with the shortest days in Arnold is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December is 4.5h.UV index
The months with the lowest UV index in Arnold are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is it in Arnold in December?
What is the average humidity in December in Arnold?
How much does it rain in Arnold in December?
How many days does it snow in December in Arnold?
What is the month with the shortest days in Arnold?
What is the average length of the day in December in Arnold?
When are sunrise and sunset in December in Arnold?
How many hours of sunshine does Arnold have in December?
What are the months with the lowest UV index in Arnold?
What is the UV index reading in December in Arnold?
Average temperature in December
Arnold, IA
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 19°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 (11.7°F).
Average pressure in December
Arnold, IA
- Average pressure in December: 30.12"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
Arnold, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Arnold, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Arnold, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Arnold, IA
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Arnold, IA
- Average snowfall in December: 2.76"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arnold, IA
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Arnold, 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 3min
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 0min).
Average sunshine days in December
Arnold, IA
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in December
Arnold, 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, February, November and December (UV index 2).
Average cloud cover in December
Arnold, IA
- Average cloud cover in December: 54
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 30).
Average visibility in December
Arnold, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Arnold, Iowa, USA
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