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
With the onset of December, Arch experiences a modest temperature adjustment, with the average high-temperature receding from a mild 60.6°F (15.9°C) in November to a fresh 50.5°F (10.3°C). An average minimum temperature of 35.6°F (2°C) is recorded during the month of December.Humidity
The average relative humidity in December is 73%.Rainfall
In Arch, Oklahoma, during December, the rain falls for 8.5 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 128.5 rainfall days, and 24.25" (616mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Arch, during December, snow falls for 0.7 days and regularly aggregates up to 0.63" (16mm) of snow. In Arch, during the entire year, snow falls for 5.6 days and aggregates up to 2.28" (58mm) of snow.Daylight
December has the shortest days of the year in Arch, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:22 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Arch have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Arch have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Arch, OK
- Average high temperature in December: 50.5°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in December
Arch, 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 (29.91"Hg).
Average wind speed in December
Arch, OK
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Arch, OK
- Average humidity in December: 73%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Arch, OK
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in December
Arch, OK
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Arch, OK
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Arch, OK
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (2.2 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
Arch, OK
- Average daylight in December: 9h and 5min
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: 5h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Arch, OK
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is July (14.4 days).
Average UV index in December
Arch, OK
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Arch, OK
- Average cloud cover in December: 38
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in December
Arch, 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).
Arch, Oklahoma, USA
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