December weather forecastSouth Amana, IA
December
Weather in December
The first month of the winter, December, is also an icy month in South Amana, Iowa, with an average temperature fluctuating between 33.4°F (0.8°C) and 22.5°F (-5.3°C).Temperature
In South Amana, entering December brings a temperature decrement, reducing from November's frosty 46°F (7.8°C) to a wintry 33.4°F (0.8°C). The nighttime temperature dips to a subzero cold 22.5°F (-5.3°C) on average during December.Humidity
In December, the average relative humidity is 81%.Rainfall
In December, in South Amana, Iowa, the rain falls for 6.4 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 141.8 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
Months with snowfall in South Amana are January through May, October through December. In South Amana, during December, snow falls for 7.7 days and regularly aggregates up to 2.24" (57mm) of snow. In South Amana, during the entire year, snow falls for 36.9 days and aggregates up to 15.91" (404mm) of snow.Daylight
December has the shortest days of the year in South Amana, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:16 am and sunset at 4:38 pm. On the last day of December, in South Amana, sunrise is at 7:35 am and sunset at 4:47 pm CST.
Sunshine
In December, the average sunshine in South Amana is 4.5h.UV index
In South Amana, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
South Amana, IA
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
South Amana, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
South Amana, IA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
South Amana, IA
- Average humidity in December: 81%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
South Amana, IA
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
South Amana, IA
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
South Amana, IA
- Average snowfall in December: 2.24"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
South Amana, IA
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Amana, 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 30min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
South Amana, IA
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in December
South Amana, 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
South Amana, IA
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
South Amana, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
