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
In Selma, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 48.4°F (9.1°C) to an icy 36°F (2.2°C). During December, Selma records an average temperature of 24.1°F (-4.4°C) at night.Humidity
The average relative humidity in December in Selma is 79%.Rainfall
In Selma, in December, during 7.7 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 133.4 rainfall days, and 26.54" (674mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 6.7 days. Throughout December, 1.81" (46mm) of snow is accumulated. In Selma, during the entire year, snow falls for 34.8 days and aggregates up to 16.18" (411mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:50 pm CST.
Sunshine
In Selma, the average sunshine in December is 4.7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Selma. 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: The maximum daily UV index of 2 in December converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Selma have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Selma, IA
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in December
Selma, 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 (29.9"Hg).
Average wind speed in December
Selma, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Selma, IA
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Selma, IA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in December
Selma, IA
- Average rainfall days in December: 7.7 days
The months with the highest number of rainy days are May and June (16.8 days).
The months with the least rainy days are January and February (6 days).
Average snowfall in December
Selma, IA
- Average snowfall in December: 1.81"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Selma, IA
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (10.8 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
Selma, IA
- Average daylight in December: 9h and 2min
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 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Selma, IA
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Selma, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Selma, IA
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 28).
Average visibility in December
Selma, 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).
Selma, Iowa, USA
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