December weather forecast and climate
Prescott, AZ

Beautiful sunset above the calm Watson Lake in the Granite Dells of Prescott, Arizona
Beautiful sunset above the calm Watson Lake in the Granite Dells of Prescott, Arizona

Weather in December

The first month of the winter, December, is also a frosty month in Prescott, Arizona, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 30.7°F (-0.7°C).

Temperature

December is the coldest month, with an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 30.7°F (-0.7°C).

Humidity

With an average relative humidity of 58%, December is the most humid month in Prescott.

Rainfall

In Prescott, during 4.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Prescott, during the entire year, the rain falls for 76.9 days and collects up to 16.46" (418mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. The month with the most snowfall in Prescott, Arizona, is December when snow falls for 3.5 days and typically aggregates up to 4.13" (105mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9.9h of daylight.

Sunshine

December has the least sunshine of the year in Prescott, with an average of 6.7h of sunshine.

UV index

December is the month with the lowest UV index in Prescott, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Prescott?

December is the coldest month in Prescott, with an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 30.7°F (-0.7°C).

What is the temperature in December in Prescott?

In December, in Prescott, Arizona, the average high-temperature is 49.1°F (9.5°C), and the average low-temperature is 30.7°F (-0.7°C).

What is the most humid month in Prescott?

The most humid month in Prescott, Arizona, is December, with an average relative humidity of 58%.

What is the average humidity in December in Prescott?

The average relative humidity in December in Prescott, Arizona, is 58%.

How many days does it rain in December in Prescott?

In December, in Prescott, the rain falls for 4.8 days. Throughout December, 1.02" (26mm) of precipitation is accumulated.

How many days does it snow in December in Prescott?

In December, in Prescott, it is snowing for 3.5 days. Throughout December, 4.13" (105mm) of snow is accumulated.

What is the snowiest month in Prescott?

December is the month with the most snowfall in Prescott. Snow falls for 3.5 days and accumulates 4.13" (105mm) of snow.

What is the month with the shortest days in Prescott?

The month with the shortest days in Prescott, Arizona, is December, with an average of 9.9h of daylight.

How many hours of daylight does Prescott have in December?

The average length of the day in December is 9.9h.

What is the month with the least sunshine in Prescott?

The month with the least sunshine in Prescott is December, with an average of 6.7h of sunshine.

How many hours of sunshine does Prescott have in December?

In Prescott, Arizona, the average sunshine in December is 6.7h.

What is the month with the lowest UV index in Prescott?

The month with the lowest UV index in Prescott is December, with an average maximum UV index of 2.

How high is the UV index in December in Prescott?

In December, the average daily maximum UV index in Prescott, Arizona, is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
Prescott, AZ

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).

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Average pressure in December
Prescott, AZ

Average pressure in December - Prescott, AZ
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in December
Prescott, AZ

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).

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Average humidity in December
Prescott, AZ

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%).

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Average rainfall in December
Prescott, AZ

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").

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Average rainfall days in December
Prescott, AZ

Average rainfall days in December - Prescott, AZ
  • Average rainfall days in December: 4.8 days

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).

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Average snowfall in December
Prescott, AZ

Average snowfall in December - Prescott, AZ
  • Average snowfall in December: 4.13"

The month with the highest snowfall is December (4.13").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Prescott, AZ

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Prescott, AZ

Average daylight in December / Average sunshine in December - Prescott, AZ
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.7h

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in December
Prescott, AZ

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).

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Average UV index in December
Prescott, AZ

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).

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Average cloud cover in December
Prescott, AZ

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).

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Average visibility in December
Prescott, AZ

Average visibility in December - Prescott, AZ
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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