December weather forecastPrescott, AZ
December
Weather in December
December solidifies winter’s presence in Prescott, with mercury levels plummeting from 30.7°F (-0.7°C) to 49.1°F (9.5°C). It aligns with the global notion of December being the harbinger of chill. A notable feature is the uptick in snowfall levels, setting the stage for a typical holiday season. Furthermore, with daylight hours being restricted, most of the day becomes dominated by twilight and darkness. Pressured peaks during this month, indicating stable weather conditions despite the cold.Temperature
December, with an average high of 49.1°F (9.5°C) and a low of 30.7°F (-0.7°C), signifies the coldest month of the year in Prescott.Humidity
December is the most humid month in Prescott, with an average relative humidity of 58%.Rainfall
In Prescott, Arizona, in December, during 4.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, in Prescott, there are 76.9 rainfall days, and 16.46" (418mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 3.5 days and accumulates 4.13" (105mm) of snow.Daylight
December has the shortest days of the year in Prescott, Arizona, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 5:19 pm. On the last day of December, sunrise is at 7:36 am and sunset at 5:29 pm MST.
Sunshine
December has the least sunshine of the year in Prescott, with an average of 6.7h of sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Prescott. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Prescott, AZ
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (49.1°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in December
Prescott, AZ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Prescott, AZ
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Prescott, AZ
- Average humidity in December: 58%
The month with the highest relative humidity is December (58%).
The month with the lowest relative humidity is June (23%).
Average rainfall in December
Prescott, AZ
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is July (4.33").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in December
Prescott, AZ
- Average rainfall days in December: 4.8 days
The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is June (2.3 days).
Average snowfall in December
Prescott, AZ
- Average snowfall in December: 4.13"
The month with the highest snowfall is December (4.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Prescott, AZ
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is December (3.5 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
Prescott, AZ
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 42min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Prescott, AZ
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is May (26.8 days).
The month with the least sunshine days is August (12.8 days).
Average UV index in December
Prescott, AZ
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Prescott, AZ
- Average cloud cover in December: 24
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in December
Prescott, 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).
