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
San Luis's coldest month, December, generally records average temperatures ranging from a high of 67.1°F (19.5°C) to a low of 50.5°F (10.3°C).Humidity
With an average relative humidity of 38%, December is the most humid month.Rainfall
In San Luis, during December, the rain falls for 2 days and regularly aggregates up to 0.24" (6mm) of precipitation. In San Luis, during the entire year, the rain falls for 25 days and collects up to 2.24" (57mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 5:33 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:44 pm MST.
Sunshine
December has the least sunshine of the year, with an average of 7.1h of sunshine.UV index
The month with the lowest UV index in San Luis is December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 4 transforms into these recommendations:
Take precautions - Protection against sun damage is advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the coldest time of year in San Luis?
What is the temperature in December in San Luis?
What is the most humid month in San Luis?
What is the average humidity in December in San Luis?
How much does it rain in San Luis in December?
What is the month with the shortest days in San Luis?
What is the average length of the day in December in San Luis?
When is the sunrise / sunset in December in San Luis?
What is the month with the least sunshine in San Luis?
How many hours of sunshine does San Luis have in December?
What is the month with the lowest UV index in San Luis?
How high is the UV index in December in San Luis?
Average temperature in December
San Luis, AZ
- Average high temperature in December: 67.1°F
The warmest month (with the highest average high temperature) is July (106.2°F).
The month with the lowest average high temperature is December (67.1°F).
- Average low temperature in December: 50.5°F
The month with the highest average low temperature is August (86.2°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).
Average pressure in December
San Luis, AZ
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.75"Hg).
Average wind speed in December
San Luis, AZ
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.7mph).
Average humidity in December
San Luis, AZ
- Average humidity in December: 38%
The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (23%).
Average rainfall in December
San Luis, AZ
- Average rainfall in December: 0.24"
The wettest month (with the highest rainfall) is July (0.39").
The driest month (with the least rainfall) is May (0").
Average rainfall days in December
San Luis, AZ
- Average rainfall days in December: 2 days
The month with the highest number of rainy days is July (5.1 days).
The month with the least rainy days is May (0.3 days).
Average daylight in December /
Average sunshine in December
San Luis, AZ
- Average daylight in December: 10h and 1min
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 6min).
- Average sunshine in December: 7h and 1min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
San Luis, AZ
- Average sunshine days in December: 28.7 days
The month with the most sunshine days is May (30.4 days).
The month with the least sunshine days is July (24.3 days).
Average UV index in December
San Luis, AZ
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
San Luis, AZ
- Average cloud cover in December: 18
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
San Luis, 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).
San Luis, Arizona, USA
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