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
The coldest period tends to be December, when average temperatures fluctuate between a high of 25.5°F (-3.6°C) and a low of 13.1°F (-10.5°C).Humidity
In December, the average relative humidity is 93%.Rainfall
In Fortine, in December, during 8.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, in Fortine, there are 136.3 rainfall days, and 15.35" (390mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Fortine, in December, snow falls for 22.1 days, with typically accumulated 9.41" (239mm) of snow. In Fortine, during the entire year, snow falls for 110.7 days and aggregates up to 46.81" (1189mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 18min of daylight.On the first day of December, sunrise is at 8:12 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 8:32 am and sunset at 4:53 pm MST.
Sunshine
In December, the average sunshine is 3.5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in Fortine in December?
What is the average humidity in December?
How much does it rain 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?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Fortine, MT
- Average high temperature in December: 25.5°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (25.5°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in December
Fortine, MT
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Fortine, MT
- Average wind speed in December: 3.4mph
The windiest month (with the highest average wind speed) is June (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in December
Fortine, MT
- Average humidity in December: 93%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Fortine, MT
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Fortine, MT
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is April (17 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Fortine, MT
- Average snowfall in December: 9.41"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Fortine, MT
- Average snowfall days in December: 22.1 days
The month with the highest number of snowfall days is December (22.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Fortine, MT
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Fortine, MT
- Average sunshine days in December: 8.5 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in December
Fortine, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Fortine, MT
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Fortine, MT
- Average visibility in December: 3mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Fortine, Montana, USA
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