Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
With the onset of October, West Yellowstone's weather experiences a distinct temperature drop, moving from an enjoyable 61.9°F (16.6°C) in September to a frosty 44.2°F (6.8°C). During the month of October, West Yellowstone anticipates a mean low-temperature of 26.1°F (-3.3°C).Humidity
The average relative humidity in October in West Yellowstone is 74%.Rainfall
In West Yellowstone, Montana, in October, during 9 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In West Yellowstone, during the entire year, the rain falls for 109.2 days and collects up to 23.15" (588mm) of precipitation.Snowfall
Months with snowfall in West Yellowstone are January through July, September through December. In West Yellowstone, Montana, in October, during 10.7 snowfall days, 7.32" (186mm) 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 October, the average length of the day in West Yellowstone is 10h and 58min.On the first day of October, sunrise is at 7:23 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 6:14 pm MDT.
Sunshine
The average sunshine in October in West Yellowstone, Montana, is 6.4h.UV index
January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index in West Yellowstone. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 1 during October leads to these advisories:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
Is October cold in West Yellowstone?
What is the average humidity in October in West Yellowstone?
How much does it rain in West Yellowstone in October?
How many days does it snow in October in West Yellowstone?
What is the average length of the day in October in West Yellowstone?
When is the sunrise / sunset in October in West Yellowstone?
How long on average sun shines in October in West Yellowstone?
When is the lowest UV index in West Yellowstone?
How high is the UV index in October in West Yellowstone?
Average temperature in October
West Yellowstone, MT
- Average high temperature in October: 44.2°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 October: 26.1°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 October
West Yellowstone, MT
- Average pressure in October: 30.06"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 October
West Yellowstone, MT
- Average wind speed in October: 6mph
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 October
West Yellowstone, MT
- Average humidity in October: 74%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is August (50%).
Average rainfall in October
West Yellowstone, MT
- Average rainfall in October: 1.46"
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 October
West Yellowstone, MT
- Average rainfall days in October: 9 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 October
West Yellowstone, MT
- Average snowfall in October: 7.32"
The month with the highest snowfall is February (17.83").
The month with the least snowfall is August (0").
Average snowfall days in October
West Yellowstone, MT
- Average snowfall days in October: 10.7 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 October /
Average sunshine in October
West Yellowstone, MT
- Average daylight in October: 11h and 0min
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 October: 6h 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 October
West Yellowstone, MT
- Average sunshine days in October: 14.5 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 October
West Yellowstone, MT
- Average UV index in October: 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 October
West Yellowstone, MT
- Average cloud cover in October: 36
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 October
West Yellowstone, MT
- Average visibility in October: 5mi
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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