December weather forecastCylinder, IA
December
Weather in December
December, the first month of the winter in Cylinder, is still a freezing cold month, with an average temperature fluctuating between 17.4°F (-8.1°C) and 28°F (-2.2°C).Temperature
The shift into December is marked by a noticeable reduction in the average high-temperature, decreasing from November's chilly 43.2°F (6.2°C) to a subzero cold 28°F (-2.2°C). Cylinder's December nights cool down to an average low-temperature of 17.4°F (-8.1°C).Humidity
The average relative humidity in December is 84%.Rainfall
In December, in Cylinder, Iowa, the rain falls for 4.4 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 138 rainfall days, and 26.77" (680mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Cylinder. In Cylinder, Iowa, in December, snow falls for 11.9 days, with typically accumulated 3.74" (95mm) of snow. Throughout the year, there are 51.6 snowfall days, and 23.03" (585mm) of snow is accumulated.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 7:30 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 4.4h.UV index
In December, the average daily maximum UV index in Cylinder is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cylinder, IA
- Average high temperature in December: 28°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in December: 17.4°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
Cylinder, 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 (29.88"Hg).
Average wind speed in December
Cylinder, IA
- Average wind speed in December: 10.6mph
The windiest months (with the highest average wind speed) are January and April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in December
Cylinder, 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
Cylinder, IA
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Cylinder, IA
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is June (20 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in December
Cylinder, IA
- Average snowfall in December: 3.74"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cylinder, IA
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cylinder, IA
- Average daylight in December: 9h and 6min
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 24min
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 0min).
Average sunshine days in December
Cylinder, IA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Cylinder, IA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Cylinder, IA
- Average cloud cover in December: 55
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 31).
Average visibility in December
Cylinder, 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).
