December weather forecast
Stillwater, OK

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Weather in December

December in Stillwater signals the start of the winter season, characterized by short days and lower temperatures. The holiday lights create a beautiful scene in the frost-laden city landscapes. Compared to November, December is colder and darker with the shortest daylight hours. In December, the winter sets in, with an average maximum temperature of 48.7°F (9.3°C). However, snowfall during this month is relatively mild, with an average of 0.43" (11mm).

Temperature

Stillwater's weather changes with the onset of December, slightly falling from a moderate 59.5°F (15.3°C) in November to a frosty 48.7°F (9.3°C). Stillwater sees an average low-temperature of 33.1°F (0.6°C) during December.

Humidity

In Stillwater, the average relative humidity in December is 66%.

Rainfall

December is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.98" (25mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In December, it is snowing for 1.4 days. Throughout December, 0.43" (11mm) of snow is accumulated. In Stillwater, during the entire year, snow falls for 7.7 days and aggregates up to 3.23" (82mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 7:21 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:38 am and sunset at 5:24 pm CST.

Sunshine

With an average of 6.1h of sunshine, December has the least sunshine of the year in Stillwater.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Frequently asked questions

What is the temperature in December?

In Stillwater, 48.7°F (9.3°C) is the average high-temperature and 33.1°F (0.6°C) is the average low-temperature during December. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in September is appraised at 89.6°F (32°C).

What is the average humidity in December?

In Stillwater, Oklahoma, the average relative humidity in December is 66%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 5.8 days and accumulates 0.98" (25mm) of precipitation.

How much does it rain in December?

In December, the rain falls for 5.8 days. Throughout December, 0.98" (25mm) of precipitation is accumulated.

How much does it snow in December?

In Stillwater, during December, snow falls for 1.4 days and regularly aggregates up to 0.43" (11mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 48min of daylight.

How many hours of daylight does Stillwater have in December?

The average day length in December is 9h and 45min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:24 pm CST.

What is the month with the least sunshine in Stillwater?

December has the least sunshine of the year, with an average of 6.1h of sunshine.

How many hours of sunshine does Stillwater have in December?

In December, the average sunshine duration is 6.1h.

What is the month with the lowest UV index?

With an average maximum UV index of 2, December is the month with the lowest UV index.

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Stillwater, OK

Average temperature in December - Stillwater, OK
  • Average high temperature in December: 48.7°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is January (47.5°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in December
Stillwater, OK

Average pressure in December - Stillwater, OK
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Stillwater, OK

Average wind speed in December - Stillwater, OK
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

Average humidity in December
Stillwater, OK

Average humidity in December - Stillwater, OK
  • Average humidity in December: 66%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (62%).

Average rainfall in December
Stillwater, OK

Average rainfall in December - Stillwater, OK
  • Average rainfall in December: 0.98"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is December (0.98").

Average rainfall days in December
Stillwater, OK

Average rainfall days in December - Stillwater, OK
  • Average rainfall days in December: 5.8 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in December
Stillwater, OK

Average snowfall in December - Stillwater, OK
  • Average snowfall in December: 0.43"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Stillwater, OK

Average snowfall days in December - Stillwater, OK
  • Average snowfall days in December: 1.4 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Stillwater, OK

Average daylight in December / Average sunshine in December - Stillwater, OK
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in December
Stillwater, OK

Average sunshine days in December - Stillwater, OK
  • Average sunshine days in December: 22.6 days

The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (13.7 days).

Average UV index in December
Stillwater, OK

Average UV index in December - Stillwater, OK
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Stillwater, OK

Average cloud cover in December - Stillwater, OK
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in December
Stillwater, OK

Average visibility in December - Stillwater, OK
  • 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).

Stillwater, Oklahoma, USA

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