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, characterized by an average high temperature of 26.8°F (-2.9°C) and a low temperature of 14°F (-10°C), is generally the coldest month.Humidity
The average relative humidity in December is 87%.Rainfall
In Darby, during December, the rain falls for 12.9 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Darby, there are 163.6 rainfall days, and 20.83" (529mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Darby. In Darby, Montana, in December, snow falls for 18.6 days, with typically accumulated 10.55" (268mm) of snow. In Darby, during the entire year, snow falls for 101.1 days and aggregates up to 59.17" (1503mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Darby.On the first day of the month, sunrise is at 7:59 am and sunset at 4:53 pm. On the last day of December, sunrise is at 8:18 am and sunset at 5:01 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index in Darby are February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What are the coldest months in Darby?
How cold is December in Darby?
What is the average humidity in December in Darby?
How many days does it rain in December in Darby?
How many days does it snow in December in Darby?
What is the month with the shortest days in Darby?
What is the average length of the day in December in Darby?
When is the sunrise / sunset in December in Darby?
What is the month with the least sunshine in Darby?
How many hours of sunshine does Darby have in December?
What are the months with the lowest UV index in Darby?
What is the UV index reading in December in Darby?
Average temperature in December
Darby, MT
- Average high temperature in December: 26.8°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in December: 14°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in December
Darby, MT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Darby, MT
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Darby, MT
- Average humidity in December: 87%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Darby, MT
- Average rainfall in December: 1.97"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in December
Darby, MT
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in December
Darby, MT
- Average snowfall in December: 10.55"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Darby, MT
- Average snowfall days in December: 18.6 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Darby, MT
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Darby, MT
- Average sunshine days in December: 10 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in December
Darby, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Darby, MT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Darby, MT
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Darby, Montana, USA
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