December weather forecastHayden, AZ

December

Weather in December

December, the first month of the winter in Hayden, is still a refreshing month, with an average temperature varying between 41.2°F (5.1°C) and 58.1°F (14.5°C).

Temperature

December is the coldest month, exhibiting average temperatures of 58.1°F (14.5°C) at the peak and 41.2°F (5.1°C) at the base.

Humidity

The most humid month is December, with an average relative humidity of 49%.

Rainfall

In December, the rain falls for 7.5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. In Hayden, during the entire year, the rain falls for 83.1 days and collects up to 11.81" (300mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of December, sunrise is at 7:08 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:27 pm MST.

Sunshine

December has the least sunshine of the year, with an average of 6.6h of sunshine.

UV index

The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, an average UV index of 3 transforms into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December is the month when Hayden experiences its coldest temperatures, averaging a high of 58.1°F (14.5°C) and a low of 41.2°F (5.1°C).

In Hayden, in December, the average high-temperature is 58.1°F (14.5°C), and the average low-temperature is 41.2°F (5.1°C).

December is the most humid month, with an average relative humidity of 49%.

In December, the average relative humidity is 49%.

In December, the rain falls for 7.5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated.

In Hayden, snow does not fall in February through December.

In Hayden, in December, it doesn't snow. In January, it regularly snows.

With an average of 10h and 0min of daylight, December has the shortest days of the year.

The average day length in December is 10h and 1min.

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:27 pm MST.

With an average of 6.6h of sunshine, December has the least sunshine of the year.

In Hayden, the average sunshine duration in December is 6.6h.

The months with the lowest UV index are November and December, with an average maximum UV index of 3.

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

68.9°F

58.1°F

59.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.1mph

6.6mph

6.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

4.2

7.5

5.8

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

25.4

22.7

24.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Hayden, AZ

Average high temperature in December: 58.1°F

The warmest month (with the highest average high temperature) is June (95°F).
The month with the lowest average high temperature is December (58.1°F).

Average low temperature in December: 41.2°F

The month with the highest average low temperature is July (76.6°F).
The coldest month (with the lowest average low temperature) is January (41°F).

Average pressure in December
Hayden, AZ

Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Hayden, AZ

Average wind speed in December: 5.9mph

The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in December
Hayden, AZ

Average humidity in December: 49%

The month with the highest relative humidity is December (49%).
The month with the lowest relative humidity is June (19%).

Average rainfall in December
Hayden, AZ

Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is June (0.2").

Average rainfall days in December
Hayden, AZ

Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is May (3.2 days).

Average snowfall days in December
Hayden, AZ

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Hayden, 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 36min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in December
Hayden, AZ

Average sunshine days in December: 22.7 days

The month with the most sunshine days is May (27.2 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
Hayden, AZ

Average UV index in December: 3

The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

Average cloud cover in December
Hayden, 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 8).

Average visibility in December
Hayden, 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).