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
A change in temperatures is noted as November gives way to December, with average highs reducing from a cold 38.8°F (3.8°C) to a subzero cold 24.8°F (-4°C). During December, Valleytown's temperature averages to an extreme cold 12.7°F (-10.7°C) at night.Humidity
The average relative humidity in December in Valleytown is 83%.Rainfall
In Valleytown, in December, it is raining for 4.2 days, with typically 0.51" (13mm) of accumulated precipitation. In Valleytown, during the entire year, the rain falls for 91.8 days and collects up to 10.63" (270mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Valleytown. December is the month with the most snowfall. Snow falls for 11.8 days and accumulates 3.43" (87mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Valleytown.On the first day of the month, sunrise is at 7:41 am and sunset at 4:15 pm. On the last day of December, sunrise is at 8:01 am and sunset at 4:23 pm MST.
Sunshine
The average sunshine in December is 4.8h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Valleytown, Montana. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
How cold is December in Valleytown?
What is the average humidity in December in Valleytown?
How much does it rain in Valleytown in December?
When does it snow the most in Valleytown?
How many days does it snow in December in Valleytown?
What is the month with the shortest days in Valleytown?
How many hours of daylight does Valleytown have in December?
When are sunrise and sunset in December in Valleytown?
How long on average sun shines in December in Valleytown?
What is the month with the lowest UV index in Valleytown?
What is the UV index intensity in December in Valleytown?
Average temperature in December
Valleytown, MT
- Average high temperature in December: 24.8°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).
- Average low temperature in December: 12.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).
Average pressure in December
Valleytown, MT
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Valleytown, MT
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).
Average humidity in December
Valleytown, MT
- Average humidity in December: 83%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Valleytown, MT
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in December
Valleytown, MT
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Valleytown, MT
- Average snowfall in December: 3.43"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Valleytown, MT
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Valleytown, 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 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Valleytown, MT
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).
Average UV index in December
Valleytown, 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, October, November and December (UV index 2).
Average cloud cover in December
Valleytown, MT
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in December
Valleytown, MT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Valleytown, Montana, USA
Weather forecast for your location
2. Allow the app to use your location
