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 is the coldest month, exhibiting average temperatures of 31.3°F (-0.4°C) at the peak and 18.5°F (-7.5°C) at the base.Humidity
The average relative humidity in December is 74%.Rainfall
In Edgar, in December, it is raining for 3.2 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 95.8 rainfall days, and 8.74" (222mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Edgar, in December, during 8.5 snowfall days, 2.36" (60mm) of snow is typically accumulated. In Edgar, during the entire year, snow falls for 44.1 days and aggregates up to 15.75" (400mm) of snow.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 7:35 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:42 pm MST.
Sunshine
In December, the average sunshine is 5.8h.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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What is the average humidity in December?
How much does it rain in Edgar in December?
How much 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?
How long on average sun shines in December in Edgar?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Edgar, MT
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).
Average pressure in December
Edgar, MT
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Edgar, MT
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Edgar, 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 (40%).
Average rainfall in December
Edgar, MT
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in December
Edgar, MT
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Edgar, MT
- Average snowfall in December: 2.36"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Edgar, MT
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Edgar, 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: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Edgar, MT
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in December
Edgar, MT
- Average UV index in December: 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, March, November and December (UV index 2).
Average cloud cover in December
Edgar, MT
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Edgar, 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).
Edgar, Montana, USA
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