December weather forecastDyersville, IA
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Dyersville, Iowa, with an average temperature ranging between min 20.7°F (-6.3°C) and max 31.3°F (-0.4°C).Temperature
A decrease in the average high-temperature is observed during December, shifting from a chilly 43.7°F (6.5°C) in November to a subzero cold 31.3°F (-0.4°C). During December, Dyersville records an average temperature of 20.7°F (-6.3°C) at night.Humidity
The average relative humidity in December is 83%.Rainfall
In December, the rain falls for 7.5 days. Throughout December, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 150.8 rainfall days, and 32.4" (823mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Dyersville, in December, during 11.3 snowfall days, 4.37" (111mm) of snow is typically accumulated. In Dyersville, during the entire year, snow falls for 53.4 days and aggregates up to 22.4" (569mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:15 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:33 am and sunset at 4:41 pm CST.
Sunshine
In December, the average sunshine is 4h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Opt for tightly woven and loose clothing to enhance protection from the Sun. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Dyersville, IA
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in December
Dyersville, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Dyersville, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Dyersville, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in December
Dyersville, IA
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is May (4.72").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in December
Dyersville, IA
- Average rainfall days in December: 7.5 days
The months with the highest number of rainy days are May and June (19.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Dyersville, IA
- Average snowfall in December: 4.37"
The month with the highest snowfall is January (6.22").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Dyersville, IA
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (14 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dyersville, IA
- Average daylight in December: 9h and 6min
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 0min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Dyersville, IA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in December
Dyersville, IA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Dyersville, IA
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
Dyersville, IA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
