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 snowfall in December
- Average snowfall 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
Summit witnesses its lowest temperatures in January and December, reaching an average of 35.4°F (1.9°C).Humidity
In December, the average relative humidity is 73%.Rainfall
In Summit, during December, the rain falls for 6 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Summit, during the entire year, the rain falls for 78.4 days and collects up to 11.61" (295mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Summit. The month with the most snowfall in Summit is December, when snow falls for 9.8 days and typically aggregates up to 8.19" (208mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December in Summit, sunrise is at 7:29 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:23 pm MST.
Sunshine
The month with the least sunshine in Summit, Utah, is December, with an average of 6.4h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. To guard against the harmful effects of the Sun, minimize exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the coldest month in Summit?
How cold is it in Summit in December?
What is the average humidity in December in Summit?
How much does it rain in Summit in December?
What is the snowiest month in Summit?
How much does it snow in Summit in December?
What is the month with the shortest days in Summit?
How many hours of daylight does Summit have in December?
When is the sunrise / sunset in December in Summit?
What is the month with the least sunshine in Summit?
How long on average sun shines in December in Summit?
What is the month with the lowest UV index in Summit?
What is the UV index intensity in December in Summit?
Average temperature in December
Summit, UT
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The months with the lowest average high temperature are January and December (35.4°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).
Average pressure in December
Summit, UT
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Summit, UT
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is June (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).
Average humidity in December
Summit, UT
- Average humidity in December: 73%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is June (27%).
Average rainfall in December
Summit, UT
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in December
Summit, UT
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (11.9 days).
The month with the least rainy days is June (2.7 days).
Average snowfall in December
Summit, UT
- Average snowfall in December: 8.19"
The month with the highest snowfall is December (8.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Summit, UT
- Average snowfall days in December: 9.8 days
The month with the highest number of snowfall days is December (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Summit, UT
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are June and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Summit, UT
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (16 days).
Average UV index in December
Summit, UT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Summit, UT
- Average cloud cover in December: 31
The month with the most cloud cover is December (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 9).
Average visibility in December
Summit, 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).
Summit, Utah, USA
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