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
Onset of December comes with a temperature decline, the average high falling from a frosty 47.3°F (8.5°C) in November to an icy 36°F (2.2°C). Throughout December, Olathe witnesses a consistent average low-temperature of 19.2°F (-7.1°C).Humidity
The average relative humidity in December in Olathe is 71%.Rainfall
In Olathe, in December, during 7.7 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, in Olathe, there are 111.1 rainfall days, and 10.43" (265mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Olathe, Colorado, during December, snow falls for 9.8 days and regularly aggregates up to 4.37" (111mm) of snow. Throughout the year, there are 42.7 snowfall days, and 19.37" (492mm) of snow is accumulated.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 7:11 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:01 pm MST.
Sunshine
The average sunshine in December in Olathe is 6.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during December leads to these advisories:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Olathe?
What is the average humidity in December in Olathe?
How much does it rain in Olathe in December?
How much does it snow in Olathe in December?
What is the month with the shortest days in Olathe?
How many hours of daylight does Olathe have in December?
When is the sunrise / sunset in December in Olathe?
How long on average sun shines in December in Olathe?
What are the months with the lowest UV index in Olathe?
What is the UV index intensity in December in Olathe?
Average temperature in December
Olathe, CO
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in December: 19.2°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Olathe, CO
- Average pressure in December: 30.18"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is May (29.91"Hg).
Average wind speed in December
Olathe, CO
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in December
Olathe, CO
- Average humidity in December: 71%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (31%).
Average rainfall in December
Olathe, CO
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is June (0.59").
Average rainfall days in December
Olathe, CO
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (7 days).
Average snowfall in December
Olathe, CO
- Average snowfall in December: 4.37"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Olathe, CO
- Average snowfall days in December: 9.8 days
The month with the highest number of snowfall days is January (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Olathe, CO
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in December
Olathe, CO
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in December
Olathe, CO
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Olathe, CO
- Average cloud cover in December: 29
The months with the most cloud cover are January and February (Cloud cover 30).
The month with the least cloud cover is June (Cloud cover 11).
Average visibility in December
Olathe, CO
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Olathe, Colorado, USA
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