December weather forecast
Broken Arrow, OK

Weather in December

December, the first month of the winter in Broken Arrow, is still a chilly month, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 48.6°F (9.2°C).

Temperature

In December, the average high-temperature decreases from a moderate 59.2°F (15.1°C) in November to a frosty 48.6°F (9.2°C). In December, in Broken Arrow, the average low-temperature is 34.3°F (1.3°C).

Humidity

The average relative humidity in December is 70%.

Rainfall

In December, in Broken Arrow, the rain falls for 7.1 days. Throughout December, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Broken Arrow, there are 131.3 rainfall days, and 29.84" (758mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Broken Arrow. In December, it is snowing for 0.9 days. Throughout December, 0.43" (11mm) of snow is accumulated. Throughout the year, in Broken Arrow, there are 6.2 snowfall days, and 3.35" (85mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 46min of daylight.
On the first day of December in Broken Arrow, sunrise is at 7:15 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:18 pm CST.

Sunshine

December has the least sunshine of the year in Broken Arrow, with an average of 5.6h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Broken Arrow?

In Broken Arrow, Oklahoma, the average relative humidity in December is 70%.

How much does it rain in Broken Arrow in December?

In December, in Broken Arrow, the rain falls for 7.1 days. Throughout December, 1.46" (37mm) of precipitation is accumulated.

How many days does it snow in December in Broken Arrow?

In December, it is snowing for 0.9 days. Throughout December, 0.43" (11mm) of snow is accumulated.

What is the month with the shortest days in Broken Arrow?

December has the shortest days of the year in Broken Arrow, with an average of 9h and 46min of daylight.

What is the average length of the day in December in Broken Arrow?

In Broken Arrow, Oklahoma, the average day length in December is 9h and 46min.

When are sunrise and sunset in December in Broken Arrow?

On the first day of December in Broken Arrow, Oklahoma, sunrise is at 7:15 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:18 pm CST.

What is the month with the least sunshine in Broken Arrow?

The month with the least sunshine is December, with an average of 5.6h of sunshine.

How long on average sun shines in December in Broken Arrow?

The average sunshine duration in December in Broken Arrow is 5.6h.

What is the month with the lowest UV index in Broken Arrow?

The months with the lowest UV index are January and December, with an average maximum UV index of 2.

What is the UV index reading in December in Broken Arrow?

In December, the average daily maximum UV index in Broken Arrow, Oklahoma, is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Broken Arrow, OK

Average temperature in December - Broken Arrow, OK
  • Average high temperature in December: 48.6°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (46.4°F).

  • Average low temperature in December: 34.3°F

The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

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Average pressure in December
Broken Arrow, OK

Average pressure in December - Broken Arrow, 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 (29.9"Hg).

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Average wind speed in December
Broken Arrow, OK

Average wind speed in December - Broken Arrow, OK
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).

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Average humidity in December
Broken Arrow, OK

Average humidity in December - Broken Arrow, OK
  • Average humidity in December: 70%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, August and October (68%).

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Average rainfall in December
Broken Arrow, OK

Average rainfall in December - Broken Arrow, OK
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is May (5.16").
The driest months (with the least rainfall) are January and February (1.38").

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Average rainfall days in December
Broken Arrow, OK

Average rainfall days in December - Broken Arrow, OK
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.2 days).

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Average snowfall in December
Broken Arrow, OK

Average snowfall in December - Broken Arrow, OK
  • Average snowfall in December: 0.43"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Broken Arrow, OK

Average snowfall days in December - Broken Arrow, OK
  • Average snowfall days in December: 0.9 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Broken Arrow, OK

Average daylight in December / Average sunshine in December - Broken Arrow, OK
  • Average daylight in December: 9h and 46min

The month with the longest days is June (Average daylight: 14h and 34min).
The month with the shortest days is December (Average daylight: 9h and 46min).

  • Average sunshine in December: 5h and 36min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in December
Broken Arrow, OK

Average sunshine days in December - Broken Arrow, OK
  • Average sunshine days in December: 22 days

The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (13.4 days).

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Average UV index in December
Broken Arrow, OK

Average UV index in December - Broken Arrow, OK
  • 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 and December (UV index 2).

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Average cloud cover in December
Broken Arrow, OK

Average cloud cover in December - Broken Arrow, OK
  • Average cloud cover in December: 36

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in December
Broken Arrow, OK

Average visibility in December - Broken Arrow, 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).

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