The natural Grand Prismatic hot springs within Yellowstone National Park, Wyoming, with yellow trails and trees and mountains in the background
Weather in October
A cooler and more temperate climate dominates October in Yellowstone National Park. The earlier autumnal colour scheme fades, and the flora adapt to the upcoming winter season. Snowfall gradually intensifies compared to September, with the chilling grasp of winter making its presence known. Shorter days, colliding with a decrease in sunshine duration, make for an early sunset spectacle. Majestic herds of elk can be heard bugling across the vast park expanses.
On the first day of the month, sunrise is at 7:21 am and sunset at 7:02 pm. On the last day of October, sunrise is at 7:59 am and sunset at 6:12 pm MDT.
Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
[Resources]Temperature
The onset of October introduces a moderate change in Yellowstone National Park's weather, with average high-temperatures falling from September's enjoyable 61.5°F (16.4°C) to a frosty 47.8°F (8.8°C). October in Yellowstone National Park witnesses a substantial contrast between the daytime highs and the average low of 23.7°F (-4.6°C).Rainfall
The month with the least rainfall in Yellowstone National Park, Wyoming, is October, when the rain falls for 8.8 days and typically collects 1.18" (30mm) of precipitation.Snowfall
Months with snowfall in Yellowstone National Park, Wyoming, are January through June, September through December. In Yellowstone National Park, Wyoming, during October, snow falls for 5.8 days and regularly aggregates up to 9.92" (252mm) of snow. In Yellowstone National Park, during the entire year, snow falls for 91.4 days and aggregates up to 193.7" (4920mm) of snow.Daylight
The average length of the day in October in Yellowstone National Park is 10h and 58min.On the first day of the month, sunrise is at 7:21 am and sunset at 7:02 pm. On the last day of October, sunrise is at 7:59 am and sunset at 6:12 pm MDT.
Sunshine
The average sunshine in October in Yellowstone National Park is 7h.UV index
The average daily maximum UV index in October in Yellowstone National Park is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What are the temperatures in Yellowstone National Park in October?
The high-temperature, in October, in Yellowstone National Park, records 47.8°F (8.8°C), while the low-temperature is 23.7°F (-4.6°C).
What is the driest month in Yellowstone National Park?
October is the month with the least rainfall in Yellowstone National Park, Wyoming. Rain falls for 8.8 days and accumulates 1.18" (30mm) of precipitation.
How many days does it rain in October in Yellowstone National Park?
In October, the rain falls for 8.8 days. Throughout October, 1.18" (30mm) of precipitation is accumulated.
How much does it snow in Yellowstone National Park in October?
In Yellowstone National Park, during October, snow falls for 5.8 days and regularly aggregates up to 9.92" (252mm) of snow.
How many hours of daylight does Yellowstone National Park have in October?
In Yellowstone National Park, Wyoming, the average day length in October is 10h and 58min.
When is the sunrise / sunset in October in Yellowstone National Park?
In October, on the first day of the month, sunrise is at 7:21 am and sunset at 7:02 pm. On the last day of the month, in Yellowstone National Park, Wyoming, sunrise is at 7:59 am and sunset at 6:12 pm MDT.
How many hours of sunshine does Yellowstone National Park have in October?
In October, the average sunshine duration in Yellowstone National Park is 7h.
What is the UV index intensity in October in Yellowstone National Park?
In October, the average daily maximum UV index in Yellowstone National Park is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average temperature in October
Yellowstone National Park, WY
- Average high temperature in October: 47.8°F
The warmest month (with the highest average high temperature) is July (71.6°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in October: 23.7°F
The month with the highest average low temperature is July (41.6°F).
The coldest months (with the lowest average low temperature) are January and February (1.2°F).
Average rainfall in October
Yellowstone National Park, WY
- Average rainfall in October: 1.2"
The wettest month (with the highest rainfall) is May (2.5").
The driest month (with the least rainfall) is October (1.2").
Average rainfall days in October
Yellowstone National Park, WY
- Average rainfall days in October: 8.8 days
The month with the highest number of rainy days is January (16.8 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in October
Yellowstone National Park, WY
- Average snowfall in October: 9.9"
The month with the highest snowfall is January (34.3").
The months with the least snowfall are July and August (0").
Average snowfall days in October
Yellowstone National Park, WY
- Average snowfall days in October: 5.8 days
The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in October /
Average sunshine in October
Yellowstone National Park, WY
- 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: 7h
The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 4h).
Average UV index in October
Yellowstone National Park, WY
- Average UV index in October: 4
The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 1).
Yellowstone National Park, Wyoming, USA
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