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
Columbus's coldest month, December, generally records average temperatures ranging from a high of 30.9°F (-0.6°C) to a low of 17.8°F (-7.9°C).Humidity
In Columbus, the average relative humidity in December is 74%.Rainfall
In Columbus, in December, it is raining for 6.8 days, with typically 0.71" (18mm) of accumulated precipitation. In Columbus, during the entire year, the rain falls for 125.4 days and collects up to 14.49" (368mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In December, it is snowing for 11.5 days. Throughout December, 5.2" (132mm) of snow is accumulated. Throughout the year, there are 63.3 snowfall days, and 39.09" (993mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:37 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:43 pm MST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.2h of sunshine.UV index
January through March, November and 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 health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is December?
What is the average humidity in December in Columbus?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Columbus, MT
- Average high temperature in December: 30.9°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in December: 17.8°F
The month with the highest average low temperature is August (57.2°F).
The coldest month (with the lowest average low temperature) is February (17.4°F).
Average pressure in December
Columbus, MT
- Average pressure in December: 30.15"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Columbus, MT
- Average wind speed in December: 8.4mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Columbus, MT
- Average humidity in December: 74%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Columbus, MT
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Columbus, MT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Columbus, MT
- Average snowfall in December: 5.2"
The month with the highest snowfall is February (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Columbus, MT
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is February (13.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Columbus, MT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).
Average sunshine days in December
Columbus, MT
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is April (9.5 days).
Average UV index in December
Columbus, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Columbus, MT
- Average cloud cover in December: 34
The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Columbus, MT
- 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).
Columbus, Montana, USA
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