October weather forecast
Yellowstone National Park, WY

The natural Grand Prismatic hot springs within Yellowstone National Park, Wyoming, with yellow trails and trees and mountains in the background
The natural Grand Prismatic hot springs within Yellowstone National Park, Wyoming, with yellow trails and trees and mountains in the background

Weather in October

October, the same as September, in Yellowstone National Park, Wyoming, is a frosty autumn month, with an average temperature ranging between max 47.8°F (8.8°C) and min 23.7°F (-4.6°C).

Temperature

In October, the average high-temperature decreases from a comfortable 61.5°F (16.4°C) in September to a frosty 47.8°F (8.8°C). In October, in Yellowstone National Park, Wyoming, the average low-temperature is 23.7°F (-4.6°C).

Rainfall

October is the month with the least rainfall in Yellowstone National Park. Rain falls for 8.8 days and accumulates 1.18" (30mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In Yellowstone National Park, during 5.8 snowfall days, 9.9" (251.5mm) of snow is typically accumulated. Throughout the year, in Yellowstone National Park, Wyoming, there are 91.4 snowfall days, and 193.7" (4920mm) of snow is accumulated.

Daylight

In Yellowstone National Park, Wyoming, the average length of the day in October is 10h and 58min.
On the first day of October in Yellowstone National Park, Wyoming, sunrise is at 7:20 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 6:13 pm MDT.

Sunshine

In Yellowstone National Park, Wyoming, the average sunshine in October is 7h.

UV index

In Yellowstone National Park, the average daily maximum UV index in October is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in October transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the driest month in Yellowstone National Park?

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.

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 many days does it snow in October in Yellowstone National Park?

In Yellowstone National Park, Wyoming, in October, snow falls for 5.8 days, with typically accumulated 9.9" (251.5mm) of snow.

How many hours of daylight does Yellowstone National Park have in October?

In October, the average day length in Yellowstone National Park, Wyoming, is 10h and 58min.

What time are sunrise and sunset in October in Yellowstone National Park?

In October, on the first day of the month, sunrise is at 7:20 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 6:13 pm MDT.

How long on average sun shines in October in Yellowstone National Park?

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 of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average rainfall days
Average snowfall days
Average sunshine
Average UV index

Average temperature in October
Yellowstone National Park, WY

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).

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Average rainfall in October
Yellowstone National Park, WY

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").

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Average rainfall days in October
Yellowstone National Park, WY

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).

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Average snowfall in October
Yellowstone National Park, WY

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").

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Average snowfall days in October
Yellowstone National Park, WY

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).

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Average daylight in October /
Average sunshine in October
Yellowstone National Park, WY

Average daylight in October / Average sunshine in October - Yellowstone National Park, WY
  • Average daylight in October: 10h and 58min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • 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).

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Average UV index in October
Yellowstone National Park, WY

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).

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