December weather forecastSignal, AZ
December
Weather in December
The first month of the winter, December, is also a fresh month in Signal, Arizona, with an average temperature ranging between max 54.5°F (12.5°C) and min 38.5°F (3.6°C).Temperature
December is the month when Signal, Arizona, experiences its coldest temperatures, averaging a high of 54.5°F (12.5°C) and a low of 38.5°F (3.6°C).Humidity
The most humid month is December, with an average relative humidity of 48%.Rainfall
In Signal, Arizona, in December, during 5.6 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Signal, during the entire year, the rain falls for 61.4 days and collects up to 8.35" (212mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 0.6 days. Throughout December, 0.43" (11mm) of snow is accumulated. Throughout the year, there are 2.8 snowfall days, and 3.74" (95mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 5:24 pm. On the last day of December, sunrise is at 7:41 am and sunset at 5:34 pm MST.
Sunshine
December has the least sunshine of the year in Signal, with an average of 6.9h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Signal, AZ
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in December
Signal, AZ
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.79"Hg).
Average wind speed in December
Signal, AZ
- Average wind speed in December: 6.1mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is December (6.1mph).
Average humidity in December
Signal, AZ
- Average humidity in December: 48%
The month with the highest relative humidity is December (48%).
The month with the lowest relative humidity is June (19%).
Average rainfall in December
Signal, AZ
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Signal, AZ
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is July (10.4 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in December
Signal, AZ
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Signal, AZ
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Signal, AZ
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 54min
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
Signal, AZ
- Average sunshine days in December: 24 days
The months with the most sunshine days are May and June (28.1 days).
The month with the least sunshine days is August (15.4 days).
Average UV index in December
Signal, AZ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Signal, AZ
- Average cloud cover in December: 21
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Signal, 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).
