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 brings a drop in Polen's average high-temperature, falling from a chilly 47.3°F (8.5°C) in November to a wintry 34.3°F (1.3°C). Polen throughout December, experiences an average nighttime temperature of 22.3°F (-5.4°C).Humidity
The average relative humidity in December in Polen is 79%.Rainfall
In Polen, during December, the rain falls for 5 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 127.7 rainfall days, and 23.39" (594mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Polen, in December, snow falls for 6.5 days, with typically accumulated 1.69" (43mm) of snow. In Polen, during the entire year, snow falls for 32.6 days and aggregates up to 12.01" (305mm) of snow.Daylight
December has the shortest days of the year in Polen, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:50 pm. On the last day of December, in Polen, sunrise is at 7:41 am and sunset at 4:59 pm CST.
Sunshine
In Polen, Iowa, the average sunshine in December is 4.8h.UV index
In Polen, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is it in Polen in December?
What is the average humidity in December in Polen?
How many days does it rain in December in Polen?
How much does it snow in Polen in December?
What is the month with the shortest days in Polen?
What is the average length of the day in December in Polen?
What time are sunrise and sunset in December in Polen?
How long on average sun shines in December in Polen?
What is the UV index intensity in December in Polen?
Average temperature in December
Polen, IA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Polen, IA
- Average pressure in December: 30.13"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
Polen, IA
- Average wind speed in December: 10.3mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Polen, IA
- Average humidity in December: 79%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Polen, IA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Polen, IA
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in December
Polen, IA
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Polen, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Polen, IA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 5min
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 24min).
Average sunshine days in December
Polen, IA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Polen, 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
Polen, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in December
Polen, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Polen, Iowa, USA
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