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
Thompson Falls reaches its lowest average temperatures in December, measuring 28.9°F (-1.7°C) at the peak and 16.2°F (-8.8°C) at the lowest.Humidity
In Thompson Falls, the average relative humidity in December is 91%.Rainfall
In Thompson Falls, during December, the rain falls for 12.2 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 152.1 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Thompson Falls, in December, during 20.4 snowfall days, 13.35" (339mm) of snow is typically accumulated. Throughout the year, there are 90.2 snowfall days, and 58.15" (1477mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 8:09 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 8:29 am and sunset at 5:00 pm MST.
Sunshine
In December, the average sunshine is 3.8h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. 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 month?
How cold is it in Thompson Falls in December?
What is the average humidity in December in Thompson Falls?
How much does it rain in Thompson Falls 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 is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Thompson Falls?
What is the UV index reading in December?
Average temperature in December
Thompson Falls, MT
- Average high temperature in December: 28.9°F
The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).
Average pressure in December
Thompson Falls, MT
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thompson Falls, MT
- Average wind speed in December: 4mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).
Average humidity in December
Thompson Falls, MT
- Average humidity in December: 91%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in December
Thompson Falls, MT
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Thompson Falls, MT
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in December
Thompson Falls, MT
- Average snowfall in December: 13.35"
The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Thompson Falls, MT
- Average snowfall days in December: 20.4 days
The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Thompson Falls, MT
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Thompson Falls, MT
- Average sunshine days in December: 8.1 days
The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in December
Thompson Falls, 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
Thompson Falls, MT
- Average cloud cover in December: 63
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Thompson Falls, MT
- Average visibility in December: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
Thompson Falls, Montana, USA
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