Sulphur
Oklahoma, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Sulphur, OK

The first month of the winter, December, is still a cool month in Sulphur, Oklahoma, with average temperature ranging between min 30.2°F (-1°C) and max 51.8°F (11°C).

Temperature

In December, the average high-temperature decreases, from an enjoyable 62.6°F (17°C) in November, to a fresh 51.8°F (11°C). In Sulphur, the average low-temperature is 30.2°F (-1°C).

Rainfall

In Sulphur, during December, the rain falls for 6 days and regularly aggregates up to 2.1" (54mm) of precipitation. Throughout the year, there are 85 rainfall days, and 39" (990mm) of precipitation is accumulated.

Daylight

With an average of 9.9h of daylight, December has the shortest days of the year.

Sunshine

Months with the least sunshine are January, November and December, with an average of 6h of sunshine.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for the ordinary 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in December in Sulphur?

In Sulphur, Oklahoma, in December, the average high-temperature is 51.8°F (11°C), and the average low-temperature is 30.2°F (-1°C).

How many days does it rain in December in Sulphur?

In Sulphur, Oklahoma, during December, the rain falls for 6 days and regularly aggregates up to 2.1" (54mm) of precipitation.

What is the month with the shortest days in Sulphur?

With an average of 9.9h of daylight, December has the shortest days of the year in Sulphur, Oklahoma.

What is the average length of the day in December in Sulphur?

In Sulphur, Oklahoma, the average length of the day in December is 9.9h.

What is the month with the least sunshine in Sulphur?

Months with the least sunshine in Sulphur are January, November and December, with an average of 6h of sunshine.

How long on average sun shines in December in Sulphur?

In Sulphur, the average sunshine in December is 6h.

What is the month with the lowest UV index in Sulphur?

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

How high is the UV index in December in Sulphur?

In Sulphur, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Sulphur, OK
  • Average high temperature in December: 52°F

Warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (50°F).

  • Average low temperature in December: 30°F

Months with the highest average low temperature are July and August (70°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average rainfall in December - Sulphur, OK
  • Average rainfall in December: 2.1"

The wettest month (with the highest rainfall) is May (5.8").
The driest month (with the lowest rainfall) is January (1.6").

Average rainfall days in December - Sulphur, OK
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is May (10 days).
Months with the lowest number of rainy days are January, February, July, August, November and December (6 days).

Average daylight in December / Average sunshine in December - Sulphur, OK
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 6).

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

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).