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
December is the month when Sleepy Hollow sees the lowest average temperatures, with a high of 29.7°F (-1.3°C) and a low of 17.2°F (-8.2°C).Humidity
In Sleepy Hollow, the average relative humidity in December is 75%.Rainfall
In Sleepy Hollow, in December, it is raining for 1.8 days, with typically 0.43" (11mm) of accumulated precipitation. In Sleepy Hollow, Wyoming, during the entire year, the rain falls for 108.9 days and collects up to 15.59" (396mm) of precipitation.Snowfall
Months with snowfall in Sleepy Hollow are January through May, September through December. In Sleepy Hollow, in December, during 6.2 snowfall days, 1.81" (46mm) of snow is typically accumulated. Throughout the year, there are 50.5 snowfall days, and 19.53" (496mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:24 pm. On the last day of December, in Sleepy Hollow, sunrise is at 7:37 am and sunset at 4:33 pm MST.
Sunshine
The average sunshine in December is 5.9h.UV index
January, February, April, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sleepy Hollow. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What time of the year is the coldest in Sleepy Hollow?
How cold is it in Sleepy Hollow in December?
What is the average humidity in December in Sleepy Hollow?
How much does it rain in Sleepy Hollow in December?
How much does it snow in Sleepy Hollow in December?
What is the month with the shortest days in Sleepy Hollow?
What is the average length of the day in December in Sleepy Hollow?
When are sunrise and sunset in December in Sleepy Hollow?
How many hours of sunshine does Sleepy Hollow have in December?
What is the month with the lowest UV index in Sleepy Hollow?
What is the UV index reading in December in Sleepy Hollow?
Average temperature in December
Sleepy Hollow, WY
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in December: 17.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure in December
Sleepy Hollow, WY
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Sleepy Hollow, WY
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.1mph).
Average humidity in December
Sleepy Hollow, WY
- Average humidity in December: 75%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Sleepy Hollow, WY
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Sleepy Hollow, WY
- Average rainfall days in December: 1.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in December
Sleepy Hollow, WY
- Average snowfall in December: 1.81"
The month with the highest snowfall is April (3.82").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Sleepy Hollow, WY
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is February (9.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Sleepy Hollow, WY
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Sleepy Hollow, WY
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in December
Sleepy Hollow, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover in December
Sleepy Hollow, WY
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Sleepy Hollow, WY
- 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).
Sleepy Hollow, Wyoming, USA
Weather forecast for your location
2. Allow the app to use your location
