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
Coalwood's progression into December involves a drop in the average high-temperature, receding from an icy 42.3°F (5.7°C) in November to a freezing cold 28.9°F (-1.7°C). An average low-temperature of 16.3°F (-8.7°C) is common in Coalwood during the nights of December.Humidity
The average relative humidity in December in Coalwood is 78%.Rainfall
The months with the least rainfall in Coalwood are November and December Rain falls for 2.6 days and accumulates 0.28" (7mm) of rain.Snowfall
Months with snowfall in Coalwood are January through May, October through December. In Coalwood, during December, snow falls for 9.2 days and regularly aggregates up to 1.5" (38mm) of snow. Throughout the year, there are 43.4 snowfall days, and 9.13" (232mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:23 am and sunset at 4:19 pm. On the last day of December, in Coalwood, sunrise is at 7:43 am and sunset at 4:28 pm MST.
Sunshine
The months with the least sunshine in Coalwood are January, February and December, with an average of 5.1h 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 in Coalwood. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Coalwood?
What is the average humidity in December in Coalwood?
What is the driest month in Coalwood?
How many days does it rain in December in Coalwood?
How many days does it snow in December in Coalwood?
What is the month with the shortest days in Coalwood?
How many hours of daylight does Coalwood have in December?
What time are sunrise and sunset in December in Coalwood?
What is the month with the least sunshine in Coalwood?
How long on average sun shines in December in Coalwood?
What is the month with the lowest UV index in Coalwood?
What is the UV index reading in December in Coalwood?
Average temperature in December
Coalwood, MT
- Average high temperature in December: 28.9°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 16.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Coalwood, MT
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Coalwood, MT
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).
Average humidity in December
Coalwood, MT
- Average humidity in December: 78%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Coalwood, MT
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").
Average rainfall days in December
Coalwood, MT
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in December
Coalwood, MT
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Coalwood, MT
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Coalwood, 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 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Coalwood, MT
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).
Average UV index in December
Coalwood, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Coalwood, MT
- Average cloud cover in December: 46
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in December
Coalwood, 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).
Coalwood, Montana, USA
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