Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The beginning of December signals a clear reduction in the average high-temperature, falling from a chilly 43.2°F (6.2°C) in November to a subzero cold 28°F (-2.2°C). The low-temperature averages to 17.4°F (-8.1°C) during the nights of December.Humidity
In December, the average relative humidity is 84%.Rainfall
In December, the rain falls for 4.4 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. In Rodman, during the entire year, the rain falls for 138 days and collects up to 26.77" (680mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Rodman, 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
December has the shortest days of the year, 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 in Rodman is 4.4h.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is it in Rodman in December?
What is the average humidity in December in Rodman?
How many days does it rain in December in Rodman?
How many days does it snow in December in Rodman?
What is the month with the shortest days in Rodman?
What is the average length of the day in December in Rodman?
When is the sunrise / sunset in December in Rodman?
How long on average sun shines in December in Rodman?
What is the UV index intensity in December in Rodman?
Average temperature in December
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, IA
- Average daylight in December: 9h and 1min
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 2min
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
Rodman, 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
Rodman, 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
Rodman, 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
Rodman, 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).
Rodman, Iowa, USA
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