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 Herndon, Kansas, December is the coldest month, with temperatures averaging a high of 40.1°F (4.5°C) and a low of 24.8°F (-4°C).Humidity
In December, the average relative humidity is 66%.Rainfall
In December, the rain falls for 3.5 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. In Herndon, during the entire year, the rain falls for 105.3 days and collects up to 15.79" (401mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Herndon, in December, during 5.5 snowfall days, 1.77" (45mm) of snow is typically accumulated. Throughout the year, there are 24.7 snowfall days, and 10.24" (260mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:46 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 8:04 am and sunset at 5:28 pm CST.
Sunshine
January and December, with an average of 6.3h 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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold does it get in December?
What is the average humidity in December?
How many days 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 are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Herndon, KS
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (40.1°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Herndon, KS
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in December
Herndon, KS
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in December
Herndon, KS
- Average humidity in December: 66%
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (52%).
Average rainfall in December
Herndon, KS
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Herndon, KS
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Herndon, KS
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Herndon, KS
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Herndon, KS
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).
Average sunshine days in December
Herndon, KS
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is August (12.9 days).
Average UV index in December
Herndon, 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
Herndon, KS
- Average cloud cover in December: 31
The month with the most cloud cover is February (Cloud cover 35).
The months with the least cloud cover are June and July (Cloud cover 20).
Average visibility in December
Herndon, 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).
Herndon, Kansas, USA
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