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 December, the meteorological conditions alter, with the average high-temperature shifting from a cool 54°F (12.2°C) in November to an icy 40.6°F (4.8°C). Portis observes an average nighttime temperature of 25.5°F (-3.6°C) during December.Humidity
January and December, with an average relative humidity of 69%, are the most humid months.Rainfall
In Portis, in December, during 4.3 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 110.3 rainfall days, and 19.76" (502mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 4.7 days. Throughout December, 1.5" (38mm) of snow is accumulated. Throughout the year, there are 22.6 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:36 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:21 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 6h of 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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What are the most humid months?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in Portis in December?
What is the month with the shortest days?
How many hours of daylight does Portis have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in Portis?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Portis, KS
- Average high temperature in December: 40.6°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Portis, KS
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Portis, KS
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Portis, KS
- Average humidity in December: 69%
The months with the highest relative humidity are January and December (69%).
The month with the lowest relative humidity is July (57%).
Average rainfall in December
Portis, KS
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Portis, KS
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Portis, KS
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Portis, KS
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Portis, KS
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Portis, KS
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in December
Portis, KS
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Portis, KS
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 21).
Average visibility in December
Portis, 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).
Portis, Kansas, USA
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