December weather forecastDelta, UT
December
Weather in December
December in Delta witnesses the onset of winter, characterized by freezing temperatures and an increase in relative humidity to 72%. With an average high temperature of 37.2°F (2.9°C) and a low of 24.1°F (-4.4°C), December is one of the coldest months. The snowfall amounts surge to 3.98" (101mm), making it a typical winter month. Despite the cold weather, the holiday season brings a festive mood to the city, making it a charming time to visit.Temperature
The start of December signals a decrease in the average high-temperature, transitioning from a fresh 50°F (10°C) in November to an icy 37.2°F (2.9°C). Throughout the month of December, Delta witnesses an average temperature of 24.1°F (-4.4°C).Humidity
The average relative humidity in December is 72%.Rainfall
In Delta, in December, it is raining for 6.4 days, with typically 0.71" (18mm) of accumulated precipitation. In Delta, during the entire year, the rain falls for 82.6 days and collects up to 7.01" (178mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 8.2 days and accumulates 3.98" (101mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:31 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:17 pm MST.
Sunshine
The average sunshine in December is 6.4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Delta, UT
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Delta, UT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Delta, UT
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is June (8.8mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in December
Delta, UT
- Average humidity in December: 72%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (24%).
Average rainfall in December
Delta, UT
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is March (0.91").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in December
Delta, UT
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is April (10 days).
The month with the least rainy days is June (3.9 days).
Average snowfall in December
Delta, UT
- Average snowfall in December: 3.98"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Delta, UT
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is December (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Delta, UT
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in December
Delta, UT
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is June (24.1 days).
The month with the least sunshine days is February (16.3 days).
Average UV index in December
Delta, UT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Delta, UT
- Average cloud cover in December: 33
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Delta, UT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
