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
December, having an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 45.5°F (7.5°C), is the coldest month.Humidity
December is the most humid month, with an average relative humidity of 44%.Rainfall
In Santa Rosa, in December, during 4.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 52.9 rainfall days, and 6.46" (164mm) of precipitation is accumulated.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:12 am and sunset at 5:22 pm. On the last day of December, sunrise is at 7:29 am and sunset at 5:33 pm MST.
Sunshine
December has the least sunshine of the year, with an average of 6.9h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 3 translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
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?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index in Santa Rosa?
What is the UV index reading in December?
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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