December weather forecastScottsdale, AZ
December
Weather in December
December ends the year in Scottsdale, Arizona with a return to winter-like conditions, marked by temperatures dipping to an average low of 47.3°F (8.5°C). The high relative humidity of 44% doesn't translate into significant precipitation, leaving the month relatively dry. As the city sees the least amount of daily sunshine hours, early evenings become a norm. With wind speeds dropping to their lowest of 4.4mph (7.1km/h), nippy winds are a rarity. Despite the winter chill, clear visibility and low rainfall make it ideal for festive outdoor activities.Temperature
December tends to be the coldest month, with temperatures averaging a daily high of 62.8°F (17.1°C) and a low of 47.3°F (8.5°C).Humidity
With an average relative humidity of 44%, December is the most humid month.Rainfall
In Scottsdale, during December, the rain falls for 6.5 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Scottsdale, during the entire year, the rain falls for 57.7 days and collects up to 7.72" (196mm) of precipitation.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:14 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:30 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 6.8h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Scottsdale, AZ
- Average high temperature in December: 62.8°F
The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in December: 47.3°F
The month with the highest average low temperature is August (84.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in December
Scottsdale, 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 (29.81"Hg).
Average wind speed in December
Scottsdale, AZ
- Average wind speed in December: 4.4mph
The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).
Average humidity in December
Scottsdale, AZ
- Average humidity in December: 44%
The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (16%).
Average rainfall in December
Scottsdale, AZ
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Scottsdale, AZ
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is June (1 days).
Average daylight in December /
Average sunshine in December
Scottsdale, AZ
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 48min
The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Scottsdale, AZ
- Average sunshine days in December: 24.1 days
The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (16.8 days).
Average UV index in December
Scottsdale, AZ
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Scottsdale, AZ
- Average cloud cover in December: 21
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Scottsdale, 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).
