Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Hennessey, the beginning of December is marked by a lowered average high-temperature, shifting from November's refreshing 59.2°F (15.1°C) to a chilly 49.1°F (9.5°C). Hennessey experiences a mean temperature of 32.4°F (0.2°C) during December nights.Humidity
The average relative humidity in December is 66%.Rainfall
December is the month with the least rainfall. Rain falls for 5.2 days and accumulates 0.71" (18mm) of precipitation.Snowfall
Months with snowfall are January through March, October through December. In Hennessey, during December, snow falls for 1.1 days and regularly aggregates up to 0.2" (5mm) of snow. Throughout the year, there are 6.6 snowfall days, and 2.28" (58mm) of snow is accumulated.Daylight
The month with the shortest days in Hennessey is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 5:17 pm. On the last day of December, in Hennessey, sunrise is at 7:42 am and sunset at 5:27 pm CST.
Sunshine
With an average of 6.2h of sunshine, December has the least sunshine of the year in Hennessey.UV index
December is the month with the lowest UV index in Hennessey, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the average December temperature in Hennessey?
What is the average humidity in December in Hennessey?
What is the driest month in Hennessey?
How many days does it rain in December in Hennessey?
How much does it snow in Hennessey in December?
What is the month with the shortest days in Hennessey?
What is the average length of the day in December in Hennessey?
What time are sunrise and sunset in December in Hennessey?
What is the month with the least sunshine in Hennessey?
How many hours of sunshine does Hennessey have in December?
When is the lowest UV index in Hennessey?
What is the UV index reading in December in Hennessey?
Average temperature in December
Hennessey, OK
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in December
Hennessey, 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
Hennessey, OK
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in December
Hennessey, OK
- Average humidity in December: 66%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Hennessey, OK
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in December
Hennessey, OK
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Hennessey, OK
- Average snowfall in December: 0.2"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Hennessey, OK
- Average snowfall days in December: 1.1 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 and September (0 days).
Average daylight in December /
Average sunshine in December
Hennessey, 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 months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Hennessey, OK
- Average sunshine days in December: 23.8 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in December
Hennessey, 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
Hennessey, OK
- Average cloud cover in December: 29
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 18).
Average visibility in December
Hennessey, 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).
Hennessey, Oklahoma, USA
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