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 onset of December witnesses a clear shift in the average high-temperature, dropping from a chilly 43.2°F (6.2°C) in November to a subzero cold 27.5°F (-2.5°C). During December, the temperature in Spencer is averaged to a low of 16.9°F (-8.4°C) at night.Humidity
The average relative humidity in December is 84%.Rainfall
In Spencer, in December, during 4 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Spencer, during the entire year, the rain falls for 112.3 days and collects up to 15.31" (389mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Spencer. In Spencer, in December, during 9.9 snowfall days, 2.05" (52mm) of snow is typically accumulated. In Spencer, during the entire year, snow falls for 45.5 days and aggregates up to 11.14" (283mm) of snow.Daylight
December has the shortest days of the year in Spencer, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:33 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:52 am and sunset at 4:55 pm CST.
Sunshine
In Spencer, the average sunshine in December is 4.4h.UV index
In December, the average daily maximum UV index in Spencer is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How cold is December in Spencer?
What is the average humidity in December in Spencer?
How many days does it rain in December in Spencer?
How much does it snow in Spencer in December?
What is the month with the shortest days in Spencer?
What is the average length of the day in December in Spencer?
What time are sunrise and sunset in December in Spencer?
How long on average sun shines in December in Spencer?
How high is the UV index in December in Spencer?
Average temperature in December
Spencer, IA
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in December: 16.9°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 (10.6°F).
Average pressure in December
Spencer, 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 (29.87"Hg).
Average wind speed in December
Spencer, IA
- Average wind speed in December: 10.7mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Spencer, IA
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Spencer, IA
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Spencer, IA
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in December
Spencer, IA
- Average snowfall in December: 2.05"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Spencer, IA
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Spencer, 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Spencer, IA
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Spencer, 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
Spencer, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Spencer, 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).
Spencer, Iowa, USA
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