December weather forecast
Olathe, KS

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Weather in December

December brings the full effect of winter to Olathe, Kansas. The month starts with a continuation of November's cold conditions and sees a further decrease in temperatures. Snow becomes more frequent, with average snowfall reaching 1.14" (29mm). Despite the snowy atmosphere, December still manages to offer clear visibility throughout, contributing to the town's festive spirit. As the year concludes, the city prepares for January and another cycle of the year's weather patterns.

Temperature

The shift from November to December in Olathe involves a decrease in the average high-temperature, from a fresh 53.2°F (11.8°C) to a wintry 41.7°F (5.4°C). During the month of December, Olathe's nighttime temperature lowers to an average of 27.9°F (-2.3°C).

Humidity

In Olathe, the average relative humidity in December is 73%.

Rainfall

In December, in Olathe, Kansas, the rain falls for 5.9 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Olathe, during the entire year, the rain falls for 137 days and collects up to 28.7" (729mm) of precipitation.

Snowfall

Months with snowfall in Olathe are January through May, October through December. In Olathe, in December, snow falls for 3.7 days, with typically accumulated 1.14" (29mm) of snow. In Olathe, during the entire year, snow falls for 20.8 days and aggregates up to 9.61" (244mm) of snow.

Daylight

The month with the shortest days in Olathe is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:07 pm CST.

Sunshine

In Olathe, the average sunshine in December is 5.5h.

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 rays for the ordinary person.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Boost your sun resistance with garments that are densely woven yet spacious. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

How cold does it get in Olathe in December?

December temperatures in Olathe vary between a high-temperature of 41.7°F (5.4°C) and a low-temperature of 27.9°F (-2.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in August is calculated to be 95°F (35°C).

What is the average humidity in December in Olathe?

In December, the average relative humidity in Olathe, Kansas, is 73%.

How many days does it rain in December in Olathe?

In Olathe, Kansas, in December, during 5.9 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

How many days does it snow in December in Olathe?

In Olathe, Kansas, during December, snow falls for 3.7 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in Olathe?

With an average of 9h and 30min of daylight, December has the shortest days of the year in Olathe.

How many hours of daylight does Olathe have in December?

In Olathe, the average day length in December is 9h and 30min.

When is the sunrise / sunset in December in Olathe?

On the first day of December in Olathe, Kansas, sunrise is at 7:19 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:07 pm CST.

How long on average sun shines in December in Olathe?

In December, the average sunshine duration in Olathe is 5.5h.

What are the months with the lowest UV index in Olathe?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Olathe, Kansas.

What is the UV index intensity in December in Olathe?

In December, the average daily maximum UV index in Olathe is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Olathe, KS

Average temperature in December - Olathe, KS
  • Average high temperature in December: 41.7°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (23°F).

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Average pressure in December
Olathe, KS

Average pressure in December - Olathe, KS
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in December
Olathe, KS

Average wind speed in December - Olathe, KS
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in December
Olathe, KS

Average humidity in December - Olathe, KS
  • Average humidity in December: 73%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (70%).

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Average rainfall in December
Olathe, KS

Average rainfall in December - Olathe, KS
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is May (4.69").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days in December
Olathe, KS

Average rainfall days in December - Olathe, KS
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in December
Olathe, KS

Average snowfall in December - Olathe, KS
  • Average snowfall in December: 1.14"

The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Olathe, KS

Average snowfall days in December - Olathe, KS
  • Average snowfall days in December: 3.7 days

The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Olathe, KS

Average daylight in December / Average sunshine in December - Olathe, KS
  • 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: 5h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in December
Olathe, KS

Average sunshine days in December - Olathe, KS
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is May (11.2 days).

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Average UV index in December
Olathe, KS

Average UV index in December - Olathe, KS
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Olathe, KS

Average cloud cover in December - Olathe, KS
  • Average cloud cover in December: 40

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in December
Olathe, KS

Average visibility in December - Olathe, 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).

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Olathe, Kansas, USA

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