Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
West Yellowstone marks the onset of January with an average high-temperature of a still freezing cold 21.9°F (-5.6°C), subtly divergent from December's 20.1°F (-6.6°C). In the month of January, the average temperature in West Yellowstone dips to an extreme cold 6.1°F (-14.4°C) during the night.Humidity
In January, the average relative humidity in West Yellowstone is 94%.Rainfall
In West Yellowstone, in January, it is raining for 2.2 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, in West Yellowstone, Montana, there are 109.2 rainfall days, and 23.15" (588mm) of precipitation is accumulated.Snowfall
January through July, September through December are months with snowfall in West Yellowstone. In West Yellowstone, in January, during 22.8 snowfall days, 17.36" (441mm) of snow is typically accumulated. In West Yellowstone, during the entire year, snow falls for 159.3 days and aggregates up to 120.47" (3060mm) of snow.Daylight
In January, the average length of the day in West Yellowstone is 9h and 17min.On the first day of January in West Yellowstone, sunrise is at 8:01 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:31 pm MST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 3.3h of sunshine.UV index
The months with the lowest UV index in West Yellowstone are January through April, October through December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during January translates into these guidelines:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in West Yellowstone?
What is the average humidity in January in West Yellowstone?
How many days does it rain in January in West Yellowstone?
How much does it snow in West Yellowstone in January?
How many hours of daylight does West Yellowstone have in January?
When is the sunrise / sunset in January in West Yellowstone?
What are the months with the least sunshine in West Yellowstone?
How many hours of sunshine does West Yellowstone have in January?
What is the month with the lowest UV index in West Yellowstone?
What is the UV index intensity in January in West Yellowstone?
Average temperature in January
West Yellowstone, MT
- Average high temperature in January: 21.9°F
The warmest month (with the highest average high temperature) is July (72.9°F).
The month with the lowest average high temperature is December (20.1°F).
- Average low temperature in January: 6.1°F
The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in January
West Yellowstone, MT
- Average pressure in January: 30.24"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
West Yellowstone, MT
- Average wind speed in January: 6.2mph
The windiest month (with the highest average wind speed) is June (6.8mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in January
West Yellowstone, MT
- Average humidity in January: 94%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is August (50%).
Average rainfall in January
West Yellowstone, MT
- Average rainfall in January: 2.09"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in January
West Yellowstone, MT
- Average rainfall days in January: 2.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (2.2 days).
Average snowfall in January
West Yellowstone, MT
- Average snowfall in January: 17.36"
The month with the highest snowfall is February (17.83").
The month with the least snowfall is August (0").
Average snowfall days in January
West Yellowstone, MT
- Average snowfall days in January: 22.8 days
The month with the highest number of snowfall days is March (24.4 days).
The months with the least snowfall days are July and August (0.2 days).
Average daylight in January /
Average sunshine in January
West Yellowstone, MT
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 3h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 18min).
Average sunshine days in January
West Yellowstone, MT
- Average sunshine days in January: 8.6 days
The months with the most sunshine days are July and September (14.7 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in January
West Yellowstone, MT
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in January
West Yellowstone, MT
- Average cloud cover in January: 71
The month with the most cloud cover is February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in January
West Yellowstone, MT
- Average visibility in January: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
West Yellowstone, Montana, USA
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