December weather forecastOtley, IA
December
Weather in December
The first month of the winter, December, is also a wintry month in Otley, Iowa, with temperature in the range of an average high of 34.5°F (1.4°C) and an average low of 22.8°F (-5.1°C).Temperature
A shift in Otley's weather is observed as November turns into December, with the average high temperature reducing from a chilly 47.1°F (8.4°C) to an icy 34.5°F (1.4°C). Throughout December, the average low-temperature in Otley dips to a subzero cold 22.8°F (-5.1°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In Otley, during December, the rain falls for 4.9 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Otley, during the entire year, the rain falls for 109.6 days and collects up to 12.28" (312mm) of precipitation.Snowfall
Months with snowfall in Otley are January through May, October through December. In Otley, in December, during 6.5 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Otley, during the entire year, snow falls for 29.7 days and aggregates up to 5.16" (131mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:19 am and sunset at 4:43 pm. On the last day of December, in Otley, sunrise is at 7:38 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December in Otley, Iowa, is 4.7h.UV index
In December, the average daily maximum UV index in Otley is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Boost your sun resistance with garments that are densely woven yet spacious. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Otley, IA
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Otley, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Otley, IA
- Average wind speed in December: 9.8mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Otley, IA
- Average humidity in December: 79%
The months with the highest relative humidity are January, February, June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Otley, IA
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in December
Otley, IA
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Otley, IA
- Average snowfall in December: 0.59"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Otley, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Otley, IA
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
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
Otley, IA
- Average sunshine days in December: 21.9 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in December
Otley, 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
Otley, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in December
Otley, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
