Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Temperature readings reach their annual highs in December, averaging 62.4°F (16.9°C) and a minimum average of 45.5°F (7.5°C).Humidity
The most humid month in Santa Rosa is December, with an average relative humidity of 44%.Rainfall
In Santa Rosa, in December, it is raining for 4.2 days, with typically 0.51" (13mm) of accumulated precipitation. In Santa Rosa, during the entire year, the rain falls for 52.9 days and collects up to 6.46" (164mm) of precipitation.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:12 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:33 pm MST.
Sunshine
December has the least sunshine of the year in Santa Rosa, with an average of 6.9h of sunshine.UV index
December is the month with the lowest UV index in Santa Rosa, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 3 during December translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the coldest month in Santa Rosa?
What is the usual temperature for Santa Rosa in December?
What is the most humid month in Santa Rosa?
What is the average humidity in December in Santa Rosa?
How many days does it rain in December in Santa Rosa?
What is the month with the shortest days in Santa Rosa?
How many hours of daylight does Santa Rosa have in December?
What time are sunrise and sunset in December in Santa Rosa?
What is the month with the least sunshine in Santa Rosa?
How long on average sun shines in December in Santa Rosa?
When is the lowest UV index in Santa Rosa?
How high is the UV index in December in Santa Rosa?
Average temperature in December
Santa Rosa, AZ
- Average high temperature in December: 62.4°F
The warmest month (with the highest average high temperature) is June (97.3°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 45.5°F
The month with the highest average low temperature is July (78.6°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in December
Santa Rosa, AZ
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).
Average wind speed in December
Santa Rosa, AZ
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in December
Santa Rosa, 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 (20%).
Average rainfall in December
Santa Rosa, AZ
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is August (1.38").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in December
Santa Rosa, AZ
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is May (1 days).
Average daylight in December /
Average sunshine in December
Santa Rosa, AZ
- Average daylight in December: 10h and 1min
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: 6h and 5min
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 54min).
Average sunshine days in December
Santa Rosa, AZ
- Average sunshine days in December: 26.5 days
The month with the most sunshine days is May (29.8 days).
The month with the least sunshine days is August (17.2 days).
Average UV index in December
Santa Rosa, AZ
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Santa Rosa, AZ
- Average cloud cover in December: 20
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in December
Santa Rosa, 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).
Santa Rosa, Arizona, USA
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