December weather forecast
Olathe, KS

Weather in December

The first month of the winter, December, is also a wintry month in Olathe, Kansas, with an average temperature fluctuating between 27.9°F (-2.3°C) and 41.7°F (5.4°C).

Temperature

In December, the average high-temperature decreases from a cool 53.2°F (11.8°C) in November to a wintry 41.7°F (5.4°C). In Olathe, the average low-temperature is 27.9°F (-2.3°C).

Humidity

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

Rainfall

In December, in Olathe, Kansas, the rain falls for 5.9 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Olathe, there are 137 rainfall days, and 28.7" (729mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 3.7 days. Throughout December, 1.14" (29mm) of snow is accumulated. Throughout the year, in Olathe, there are 20.8 snowfall days, and 9.61" (244mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Olathe, with an average of 9h and 30min of daylight.
On the first day of December in Olathe, sunrise is at 7:18 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:06 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 in Olathe. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Olathe?

In Olathe, Kansas, in December, the average high-temperature is 41.7°F (5.4°C), and the average low-temperature is 27.9°F (-2.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in August is computed to be 95°F (35°C).

What is the average humidity in December in Olathe?

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

How much does it rain in Olathe in December?

In Olathe, during December, the rain falls for 5.9 days and regularly aggregates up to 1.42" (36mm) of precipitation.

How many days does it snow in December in Olathe?

In December, in Olathe, Kansas, it is snowing for 3.7 days. Throughout December, 1.14" (29mm) of snow is accumulated.

What is the month with the shortest days in Olathe?

The month with the shortest days in Olathe is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Olathe have in December?

The average day length in December in Olathe is 9h and 30min.

When are sunrise and sunset in December in Olathe?

On the first day of December, sunrise is at 7:18 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:06 pm CST.

How long on average sun shines in December in Olathe?

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

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

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

What is the UV index reading in December in Olathe?

In Olathe, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from 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 30min

The month with the longest days is June (Average daylight: 14h and 51min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 30min

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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