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 onset of December introduces a moderate change in Calamus's weather, with average high-temperatures falling from November's frosty 45.7°F (7.6°C) to a wintry 33.4°F (0.8°C). During December, the average low-temperature is a freezing cold 22.6°F (-5.2°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In December, the rain falls for 7.3 days. Throughout December, 1.38" (35mm) of precipitation is accumulated. In Calamus, during the entire year, the rain falls for 142.1 days and collects up to 28.35" (720mm) of precipitation.Snowfall
Months with snowfall in Calamus are January through April, October through December. In Calamus, in December, during 8.5 snowfall days, 2.28" (58mm) of snow is typically accumulated. Throughout the year, in Calamus, there are 39.7 snowfall days, and 15.67" (398mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:42 pm CST.
Sunshine
In Calamus, the average sunshine in December is 4.3h.UV index
The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold is it in Calamus in December?
What is the average humidity in December in Calamus?
How much does it rain in Calamus in December?
How many days does it snow in December in Calamus?
What is the month with the shortest days in Calamus?
How many hours of daylight does Calamus have in December?
When is the sunrise / sunset in December in Calamus?
How many hours of sunshine does Calamus have in December?
How high is the UV index in December in Calamus?
Average temperature in December
Calamus, IA
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in December: 22.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Calamus, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Calamus, IA
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Calamus, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Calamus, IA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in December
Calamus, IA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Calamus, IA
- Average snowfall in December: 2.28"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Calamus, IA
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is January (11.5 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
Calamus, 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 12min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Calamus, IA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Calamus, IA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Calamus, IA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Calamus, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Calamus, Iowa, USA
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