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
The coldest month is December, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.4°F (-3.1°C).Humidity
The average relative humidity in December in Wiley is 57%.Rainfall
In Wiley, during December, the rain falls for 3.7 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, in Wiley, there are 79.5 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, in Wiley, it is snowing for 3.5 days. Throughout December, 1.02" (26mm) of snow is accumulated. In Wiley, during the entire year, snow falls for 19.6 days and aggregates up to 7.09" (180mm) of snow.Daylight
December has the shortest days of the year in Wiley, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:49 am and sunset at 4:31 pm. On the last day of December, in Wiley, sunrise is at 7:07 am and sunset at 4:41 pm MST.
Sunshine
In December, the average sunshine is 6.8h.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Wiley. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Wiley?
How cold is December in Wiley?
What is the average humidity in December in Wiley?
How many days does it rain in December in Wiley?
How much does it snow in Wiley in December?
What is the month with the shortest days in Wiley?
How many hours of daylight does Wiley have in December?
When are sunrise and sunset in December in Wiley?
How many hours of sunshine does Wiley have in December?
When is the lowest UV index in Wiley?
What is the UV index reading in December in Wiley?
Average temperature in December
Wiley, CO
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in December
Wiley, CO
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in December
Wiley, CO
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).
Average humidity in December
Wiley, CO
- Average humidity in December: 57%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).
Average rainfall in December
Wiley, CO
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in December
Wiley, CO
- Average rainfall days in December: 3.7 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in December
Wiley, CO
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Wiley, CO
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Wiley, CO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Wiley, CO
- Average sunshine days in December: 24.9 days
The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in December
Wiley, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Wiley, CO
- Average cloud cover in December: 23
The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in December
Wiley, CO
- 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).
Wiley, Colorado, USA
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