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, marked by an average high-temperature of 27.1°F (-2.7°C) and a low-temperature of 13.1°F (-10.5°C), is the coldest month.Humidity
In Winston, the average relative humidity in December is 84%.Rainfall
December is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.51" (13mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Winston. In Winston, in December, snow falls for 13.1 days, with typically accumulated 3.74" (95mm) of snow. Throughout the year, in Winston, Montana, there are 72.8 snowfall days, and 26.22" (666mm) of snow is accumulated.Daylight
The month with the shortest days in Winston is December, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:50 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 4:49 pm MST.
Sunshine
The average sunshine in December is 5.8h.UV index
The months with the lowest UV index in Winston are February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Winston?
How cold is December in Winston?
What is the average humidity in December in Winston?
What is the driest month in Winston?
How much does it rain in Winston in December?
How many days does it snow in December in Winston?
What is the month with the shortest days in Winston?
How many hours of daylight does Winston have in December?
What time are sunrise and sunset in December in Winston?
How many hours of sunshine does Winston have in December?
When is the lowest UV index in Winston?
What is the UV index reading in December in Winston?
Average temperature in December
Winston, MT
- Average high temperature in December: 27.1°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in December: 13.1°F
The months with the highest average low temperature are July and August (49.3°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in December
Winston, MT
- Average pressure in December: 30.17"Hg
The months with the highest atmospheric pressure are January and December (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Winston, MT
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is December (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Winston, MT
- Average humidity in December: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in December
Winston, MT
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (1.65").
The driest month (with the least rainfall) is December (0.51").
Average rainfall days in December
Winston, MT
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Winston, MT
- Average snowfall in December: 3.74"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Winston, MT
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is February (15.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Winston, MT
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in December
Winston, MT
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is August (19.6 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Winston, 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 February and December (UV index 1).
Average cloud cover in December
Winston, MT
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Winston, MT
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Winston, Montana, USA
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