December weather forecastLehi, UT

December
Weather in December
The year in Lehi concludes with a wintry December, characterized by fresh snowfall, frosty temperatures, and festive holiday ambiance. The charming snowfall returns with a pronounced increase from November's 4.69" (119mm) to 10.16" (258mm) indicating the start of winter. The city transforms into a white wonderland, decorated with holiday spirit, offering a sight to remember during Christmas. The long nights paired with the short daylight of 9.3 hours bring a sense of serenity, perfect for cozy indoor gatherings. Despite the cold exterior, December pulls everyone into the warm heart of holiday celebrations, culminating the year on a high note.Temperature
January and December, with an average high-temperature of 32.4°F (0.2°C), are the coldest months in Lehi.Humidity
In Lehi, the average relative humidity in December is 81%.Rainfall
The months with the most rainfall are April and December, with an average 1.93" (49mm) of precipitation.Snowfall
Months with snowfall in Lehi, Utah, are January through May, October through December. In Lehi, during December, snow falls for 13 days and regularly aggregates up to 10.16" (258mm) of snow. Throughout the year, there are 58.5 snowfall days, and 44.49" (1130mm) of snow is accumulated.Daylight
The month with the shortest days in Lehi is December, with an average of 9h and 18min of daylight.On the first day of December in Lehi, sunrise is at 7:31 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:11 pm MST.
Sunshine
The average sunshine in December in Lehi, Utah, is 5.7h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lehi, UT
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The months with the lowest average high temperature are January and December (32.4°F).
- Average low temperature in December: 17.2°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Lehi, UT
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Lehi, UT
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).
Average humidity in December
Lehi, UT
- Average humidity in December: 81%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is July (38%).
Average rainfall in December
Lehi, UT
- Average rainfall in December: 1.93"
The wettest months (with the highest rainfall) are April and December (1.93").
The driest month (with the least rainfall) is June (0.75").
Average rainfall days in December
Lehi, UT
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (14.3 days).
The months with the least rainy days are June and November (7.3 days).
Average snowfall in December
Lehi, UT
- Average snowfall in December: 10.16"
The month with the highest snowfall is January (11.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lehi, UT
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lehi, UT
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Lehi, UT
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in December
Lehi, UT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Lehi, UT
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Lehi, UT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).





