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
Lyons, Colorado, experiences its lowest temperatures in December, with an average peak of 35.4°F (1.9°C) and a low of 17.6°F (-8°C).Humidity
In December, the average relative humidity in Lyons is 66%.Rainfall
In December, the rain falls for 5.1 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 134.2 rainfall days, and 17.13" (435mm) of precipitation is accumulated.Snowfall
Months with snowfall in Lyons are January through May, October through December. In Lyons, Colorado, in December, during 9.4 snowfall days, 4.37" (111mm) of snow is typically accumulated. Throughout the year, in Lyons, there are 53.5 snowfall days, and 42.36" (1076mm) of snow is accumulated.Daylight
December has the shortest days of the year in Lyons, Colorado, with an average of 9h and 24min of daylight.On the first day of December in Lyons, sunrise is at 7:05 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:45 pm MST.
Sunshine
In December, the average sunshine in Lyons is 6.8h.UV index
January, February, October through 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 low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What is the coldest time of year in Lyons?
How cold is it in Lyons in December?
What is the average humidity in December in Lyons?
How many days does it rain in December in Lyons?
How many days does it snow in December in Lyons?
What is the month with the shortest days in Lyons?
How many hours of daylight does Lyons have in December?
What time are sunrise and sunset in December in Lyons?
How long on average sun shines in December in Lyons?
When is the lowest UV index in Lyons?
What is the UV index intensity in December in Lyons?
Average temperature in December
Lyons, CO
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in December: 17.6°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is December (17.6°F).
Average pressure in December
Lyons, CO
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in December
Lyons, CO
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Lyons, CO
- Average humidity in December: 66%
The month with the highest relative humidity is February (71%).
The months with the lowest relative humidity are June, August and September (46%).
Average rainfall in December
Lyons, CO
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Lyons, CO
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in December
Lyons, CO
- Average snowfall in December: 4.37"
The month with the highest snowfall is April (8.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lyons, CO
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Lyons, CO
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Lyons, CO
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in December
Lyons, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Lyons, CO
- Average cloud cover in December: 24
The months with the most cloud cover are April and May (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 17).
Average visibility in December
Lyons, 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).
Lyons, Colorado, USA
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