Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The advent of January brings an average high-temperature of a still icy 42.4°F (5.8°C), almost identical to the preceding month. Throughout the month of January, the average temperature in Derby dips to a subzero cold 23.2°F (-4.9°C) at night.Humidity
In January, the average relative humidity is 62%.Rainfall
The months with the least rainfall in Derby are January and December Rain falls for 2.3 days and accumulates 0.08" (2mm) of rain.Snowfall
January through May, October through December are months with snowfall in Derby, Colorado. In Derby, during January, snow falls for 3.2 days and regularly aggregates up to 0.71" (18mm) of snow. Throughout the year, in Derby, there are 19.6 snowfall days, and 8.5" (216mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 44min.On the first day of January in Derby, sunrise is at 7:20 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:17 pm MST.
Sunshine
In January, the average sunshine is 7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Derby. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
How cold is January in Derby?
What is the average humidity in January in Derby?
What is the driest month in Derby?
How many days does it rain in January in Derby?
How many days does it snow in January in Derby?
What is the average length of the day in January in Derby?
What time are sunrise and sunset in January in Derby?
How long on average sun shines in January in Derby?
What are the months with the lowest UV index in Derby?
How high is the UV index in January in Derby?
Average temperature in January
Derby, CO
- Average high temperature in January: 42.4°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in January
Derby, CO
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in January
Derby, CO
- Average wind speed in January: 6.1mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in January
Derby, CO
- Average humidity in January: 62%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).
Average rainfall in January
Derby, CO
- Average rainfall in January: 0.08"
The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days in January
Derby, CO
- Average rainfall days in January: 2.3 days
The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).
Average snowfall in January
Derby, CO
- Average snowfall in January: 0.71"
The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Derby, CO
- Average snowfall days in January: 3.2 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Derby, CO
- Average daylight in January: 9h and 4min
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 January: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in January
Derby, CO
- Average sunshine days in January: 27.4 days
The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).
Average UV index in January
Derby, CO
- Average UV index in January: 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, November and December (UV index 2).
Average cloud cover in January
Derby, CO
- Average cloud cover in January: 21
The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in January
Derby, CO
- Average visibility in January: 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).
Derby, Colorado, USA
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