December weather forecastHelper, UT
December
Weather in December
December, the first month of the winter in Helper, is still a freezing cold month, with an average temperature fluctuating between 15.6°F (-9.1°C) and 31.6°F (-0.2°C).Temperature
Helper witnesses its lowest temperatures in January and December, reaching an average of 31.6°F (-0.2°C).Humidity
The average relative humidity in December is 75%.Rainfall
In Helper, in December, it is raining for 6.8 days, with typically 1.02" (26mm) of accumulated precipitation. In Helper, during the entire year, the rain falls for 95.3 days and collects up to 8.66" (220mm) of precipitation.Snowfall
Months with snowfall in Helper are January through May, October through December. The month with the most snowfall in Helper is December, when snow falls for 11.5 days and typically aggregates up to 7.87" (200mm) of snow.Daylight
The month with the shortest days in Helper, Utah, is December, with an average of 9h and 24min of daylight.On the first day of December in Helper, sunrise is at 7:25 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:09 pm MST.
Sunshine
In December, the average sunshine in Helper is 6.6h.UV index
The months with the lowest UV index in Helper, Utah, are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Helper, UT
- Average high temperature in December: 31.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The months with the lowest average high temperature are January and December (31.6°F).
- Average low temperature in December: 15.6°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Helper, UT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Helper, UT
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity in December
Helper, UT
- Average humidity in December: 75%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (32%).
Average rainfall in December
Helper, UT
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is March (1.14").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in December
Helper, UT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is April (12.1 days).
The month with the least rainy days is November (5.1 days).
Average snowfall in December
Helper, UT
- Average snowfall in December: 7.87"
The month with the highest snowfall is December (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Helper, UT
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Helper, UT
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 6h and 36min
The months with the most sunshine are June and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Helper, UT
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is June (22.1 days).
The month with the least sunshine days is April (13 days).
Average UV index in December
Helper, UT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Helper, UT
- Average cloud cover in December: 30
The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 11).
Average visibility in December
Helper, 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).
