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

December weather forecast and climate
Guymon, OK

The first month of the winter, December, is still a cool month in Guymon, Oklahoma, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 51.1°F (10.6°C).

Temperature

In December, the average high-temperature marginally drops, from a moderate 59°F (15°C) in November, to a fresh 51.1°F (10.6°C). In December, in Guymon, the average low-temperature is 24.1°F (-4.4°C).

Humidity

The average relative humidity in Guymon, Oklahoma, is 73%.

Rainfall

In December, the rain falls for 2 days. Throughout December, 0.6" (15.2mm) of precipitation is accumulated. Throughout the year, in Guymon, there are 44.4 rainfall days, and 20.9" (530.8mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December.

Daylight

December has the shortest days of the year, with an average of 9.7h of daylight.

Sunshine

The month with the least sunshine in Guymon, Oklahoma, is December, with an average of 6h of sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV rays for the ordinary person.
The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Guymon?

In December, in Guymon, the average high-temperature is 51.1°F (10.6°C), and the average low-temperature is 24.1°F (-4.4°C).

What is the average humidity in December in Guymon?

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

How many days does it rain in December in Guymon?

In Guymon, Oklahoma, during December, the rain falls for 2 days and regularly aggregates up to 0.6" (15.2mm) of precipitation.

How much does it snow in Guymon in December?

During December, Guymon regularly aggregates up to 3.5" (88.9mm) of snow.

What is the month with the shortest days in Guymon?

December has the shortest days of the year, with an average of 9.7h of daylight.

How many hours of daylight does Guymon have in December?

The average length of the day in December in Guymon, Oklahoma, is 9.7h.

What is the month with the least sunshine in Guymon?

The month with the least sunshine in Guymon, Oklahoma, is December, with an average of 6h of sunshine.

How long on average sun shines in December in Guymon?

In December, the average sunshine is 6h.

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

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

How high is the UV index in December in Guymon?

In Guymon, Oklahoma, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Guymon, OK
  • Average high temperature in December: 51°F

The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in December: 24°F

Months with the highest average low temperature are July and August (65°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average humidity in December - Guymon, OK
  • Average humidity in December: 73%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is August (54%).

Average rainfall in December - Guymon, OK
  • Average rainfall in December: 0.6"

The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the lowest rainfall) is January (0.5").

Average rainfall days in December - Guymon, OK
  • Average rainfall days in December: 2 days

Months with the highest number of rainy days are May and July (6.2 days).
The month with the lowest number of rainy days is January (1.6 days).

Average snowfall in December - Guymon, OK
  • Average snowfall in December: 3.5"

The month with the highest snowfall is February (3.9").
Months with the lowest snowfall are June, July, August and September (0").

Average daylight in December / Average sunshine in December - Guymon, OK
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 6h

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

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

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 2).