December weather forecastCyril, OK

December

Weather in December

December, the first month of the winter in Cyril, is also a fresh month, with an average temperature fluctuating between 50.5°F (10.3°C) and 33.8°F (1°C).

Temperature

December weather is marked by a drop in the average high-temperature, falling from a comfortable 61°F (16.1°C) in November to a fresh 50.5°F (10.3°C). Cyril in December experiences a low-temperature average of 33.8°F (1°C).

Humidity

In Cyril, the average relative humidity in December is 65%.

Rainfall

In Cyril, in December, it is raining for 4 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 89.3 rainfall days, and 11.1" (282mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Cyril, during December, snow falls for 1 days and regularly aggregates up to 0.28" (7mm) of snow. In Cyril, during the entire year, snow falls for 4.2 days and aggregates up to 1.46" (37mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 7:22 am and sunset at 5:21 pm. On the last day of December, in Cyril, sunrise is at 7:40 am and sunset at 5:31 pm CST.

Sunshine

With an average of 6.3h of sunshine, December has the least sunshine of the year.

UV index

The month with the lowest UV index in Cyril, Oklahoma, is December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Cyril, records 50.5°F (10.3°C), while the low-temperature is 33.8°F (1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 91.4°F (33°C).

The average relative humidity in December is 65%.

In Cyril, during December, the rain falls for 4 days and regularly aggregates up to 0.43" (11mm) of precipitation.

In Cyril, in December, during 1 snowfall days, 0.28" (7mm) of snow is typically accumulated.

With an average of 9h and 54min of daylight, December has the shortest days of the year.

In Cyril, the average day length in December is 9h and 52min.

On the first day of December, sunrise is at 7:22 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:31 pm CST.

With an average of 6.3h of sunshine, December has the least sunshine of the year in Cyril.

In December, the average sunshine duration is 6.3h.

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

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Cyril, OK

  • Average high temperature in December: 50.5°F

The warmest month (with the highest average high temperature) is July (94.8°F).
The month with the lowest average high temperature is January (50.4°F).

  • Average low temperature in December: 33.8°F

The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).

Average pressure in December
Cyril, 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
Cyril, OK

  • Average wind speed in December: 10mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).

Average humidity in December
Cyril, OK

  • Average humidity in December: 65%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (54%).

Average rainfall in December
Cyril, OK

  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is February (0.28").

Average rainfall days in December
Cyril, OK

  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (3.3 days).

Average snowfall in December
Cyril, OK

  • Average snowfall in December: 0.28"

The month with the highest snowfall is January (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Cyril, OK

  • Average snowfall days in December: 1 days

The month with the highest number of snowfall days is February (1.6 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
Cyril, OK

  • Average daylight in December: 9h and 54min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 18min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

Average sunshine days in December
Cyril, OK

  • Average sunshine days in December: 26.2 days

The month with the most sunshine days is January (26.6 days).
The month with the least sunshine days is May (15.8 days).

Average UV index in December
Cyril, 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
Cyril, OK

  • Average cloud cover in December: 29

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in December
Cyril, 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).