December weather forecastSloan, IA
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Sloan, Iowa, with an average temperature varying between 31.1°F (-0.5°C) and 19°F (-7.2°C).Temperature
The beginning of December signals a clear reduction in the average high-temperature, falling from a frosty 46.8°F (8.2°C) in November to a subzero cold 31.1°F (-0.5°C). In December, the recorded average low-temperature is a still freezing cold 19°F (-7.2°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In December, the rain falls for 3.2 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. In Sloan, during the entire year, the rain falls for 102.3 days and collects up to 12.91" (328mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Sloan, in December, snow falls for 7.3 days, with typically accumulated 1.42" (36mm) of snow. In Sloan, during the entire year, snow falls for 31.1 days and aggregates up to 6.85" (174mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:34 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:02 pm CST.
Sunshine
In Sloan, the average sunshine in December is 4.8h.UV index
The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, an average UV index of 2 transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sloan, IA
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Sloan, 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 (29.86"Hg).
Average wind speed in December
Sloan, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in December
Sloan, IA
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (65%).
Average rainfall in December
Sloan, IA
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.39").
Average rainfall days in December
Sloan, IA
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (2.6 days).
Average snowfall in December
Sloan, IA
- Average snowfall in December: 1.42"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sloan, IA
- Average snowfall days in December: 7.3 days
The month with the highest number of snowfall days is January (8.2 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
Sloan, 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 48min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Sloan, IA
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in December
Sloan, 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 January (UV index 1).
Average cloud cover in December
Sloan, IA
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Sloan, 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).
