December weather forecastBoyer, IA
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Boyer, Iowa, with an average temperature fluctuating between 31.8°F (-0.1°C) and 20.3°F (-6.5°C).Temperature
December involves a decrease in temperature, down from a chilly 45.9°F (7.7°C) in November to a subzero cold 31.8°F (-0.1°C). The nights of December anticipate an average low-temperature of 20.3°F (-6.5°C).Humidity
The average relative humidity in December in Boyer is 80%.Rainfall
In Boyer, in December, during 4.5 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, in Boyer, there are 123 rainfall days, and 24.72" (628mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Boyer, in December, snow falls for 8 days, with typically accumulated 2.44" (62mm) of snow. In Boyer, during the entire year, snow falls for 36.8 days and aggregates up to 14.53" (369mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:30 am and sunset at 4:49 pm. On the last day of December, in Boyer, Iowa, sunrise is at 7:49 am and sunset at 4:59 pm CST.
Sunshine
In Boyer, the average sunshine in December is 4.7h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Boyer, IA
- Average high temperature in December: 31.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in December
Boyer, 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 (29.87"Hg).
Average wind speed in December
Boyer, 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 (7.4mph).
Average humidity in December
Boyer, IA
- Average humidity in December: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Boyer, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in December
Boyer, IA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Boyer, IA
- Average snowfall in December: 2.44"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Boyer, IA
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Boyer, IA
- Average daylight in December: 9h and 12min
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 12min).
- Average sunshine in December: 4h and 42min
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 12min).
Average sunshine days in December
Boyer, IA
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in December
Boyer, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Boyer, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Boyer, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
