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
December is marked by a distinct decrease in the average high-temperature, falling from a frosty 44.6°F (7°C) in November to a freezing cold 30.2°F (-1°C). In December, Callender experiences an average nighttime temperature of 19.4°F (-7°C).Humidity
The average relative humidity in December is 82%.Rainfall
In Callender, in December, during 4.7 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 130.9 rainfall days, and 24.96" (634mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Callender. In December, it is snowing for 9.5 days. Throughout December, 2.91" (74mm) of snow is accumulated. In Callender, during the entire year, snow falls for 43.2 days and aggregates up to 17.01" (432mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 4:45 pm. On the last day of December, in Callender, sunrise is at 7:46 am and sunset at 4:54 pm CST.
Sunshine
In Callender, the average sunshine in December is 4.5h.UV index
In December, the average daily maximum UV index in Callender is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold is December in Callender?
What is the average humidity in December in Callender?
How much does it rain in Callender in December?
How much does it snow in Callender in December?
What is the month with the shortest days in Callender?
What is the average length of the day in December in Callender?
What time are sunrise and sunset in December in Callender?
How many hours of sunshine does Callender have in December?
What is the UV index reading in December in Callender?
Average temperature in December
Callender, IA
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in December
Callender, 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 (29.88"Hg).
Average wind speed in December
Callender, IA
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Callender, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (69%).
Average rainfall in December
Callender, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in December
Callender, IA
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Callender, IA
- Average snowfall in December: 2.91"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Callender, IA
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Callender, IA
- Average daylight in December: 9h and 1min
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 6min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Callender, IA
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Callender, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Callender, IA
- Average cloud cover in December: 54
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
Callender, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Callender, Iowa, USA
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