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
With December's arrival, Saint Marys's weather changes as the average high-temperature falls from a fresh 53.1°F (11.7°C) in November to a wintry 40.1°F (4.5°C). The temperature in Saint Marys lowers to an average of 26.2°F (-3.2°C) during December nights.Humidity
In Saint Marys, Kansas, the average relative humidity in December is 72%.Rainfall
The months with the least rainfall are January and December Rain falls for 4.2 days and accumulates 0.55" (14mm) of rain.Snowfall
Months with snowfall are January through April, October through December. In Saint Marys, in December, during 3.1 snowfall days, 0.83" (21mm) of snow is typically accumulated. In Saint Marys, during the entire year, snow falls for 17.9 days and aggregates up to 6.61" (168mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:25 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:11 pm CST.
Sunshine
January and December, with an average of 5.6h of sunshine, are months with the least sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
What is the driest month?
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?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December in Saint Marys?
Average temperature in December
Saint Marys, KS
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Saint Marys, KS
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Saint Marys, KS
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Saint Marys, KS
- Average humidity in December: 72%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Saint Marys, KS
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days in December
Saint Marys, KS
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in December
Saint Marys, KS
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Saint Marys, KS
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is February (4.9 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
Saint Marys, KS
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in December
Saint Marys, KS
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is December (23.6 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in December
Saint Marys, KS
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Saint Marys, KS
- Average cloud cover in December: 37
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in December
Saint Marys, KS
- 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).
Saint Marys, Kansas, USA
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