December weather forecastDouglas, AZ

December
Weather in December
December marks the peak of the cold season in Douglas. With its biting frosts and early dusk, this month engages fully with winter. A tranquil calm descends with the shorter days and longer nights. The month sees a humble 0.04" (1mm) of snowfall, putting a cap on the city’s yearly weather cycle. With the arrival of the holidays, this chilly backdrop sets the perfect stage for a winter wonderland.Temperature
December is the month when Douglas sees the lowest average temperatures, with a high of 57.9°F (14.4°C) and a low of 39.2°F (4°C).Humidity
December is the most humid month, with an average relative humidity of 49%.Rainfall
In Douglas, in December, it is raining for 5.5 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, in Douglas, there are 80.7 rainfall days, and 9.33" (237mm) of precipitation is accumulated.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.8 snowfall days, and 0.83" (21mm) of snow is accumulated.Daylight
The month with the shortest days in Douglas is December, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:17 am and sunset at 5:26 pm MST.
Sunshine
With an average of 7.1h of sunshine, December has the least sunshine of the year.UV index
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the UV index of 3 transforms into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Douglas, AZ
- Average high temperature in December: 57.9°F
The warmest month (with the highest average high temperature) is June (93.2°F).
The month with the lowest average high temperature is December (57.9°F).
- Average low temperature in December: 39.2°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in December
Douglas, AZ
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Douglas, AZ
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is May (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Douglas, AZ
- Average humidity in December: 49%
The month with the highest relative humidity is December (49%).
The month with the lowest relative humidity is May (22%).
Average rainfall in December
Douglas, AZ
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is July (2.44").
The driest months (with the least rainfall) are April and May (0.08").
Average rainfall days in December
Douglas, AZ
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is May (1.8 days).
Average snowfall in December
Douglas, AZ
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Douglas, AZ
- Average snowfall days in December: 0.3 days
The months with the highest number of snowfall days are February and December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Douglas, AZ
- Average daylight in December: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 7h and 6min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Douglas, AZ
- Average sunshine days in December: 24.2 days
The month with the most sunshine days is May (28.9 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Douglas, AZ
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in December
Douglas, AZ
- Average cloud cover in December: 19
The month with the most cloud cover is July (Cloud cover 21).
The month with the least cloud cover is May (Cloud cover 6).
Average visibility in December
Douglas, AZ
- 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).





