October weather forecast
Grass Creek, WY

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Weather in October

October, like September, is a frosty autumn month in Grass Creek, Wyoming, with an average temperature varying between 32.7°F (0.4°C) and 48.9°F (9.4°C).

Temperature

The changeover to October signals a significant decrease in the average high-temperature, dropping from a refreshing 65.8°F (18.8°C) in September to a frosty 48.9°F (9.4°C). During October, Grass Creek observes a consistent average nighttime temperature of 32.7°F (0.4°C).

Humidity

In October, the average relative humidity in Grass Creek is 59%.

Rainfall

In Grass Creek, in October, during 5.5 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, there are 93.8 rainfall days, and 12.05" (306mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. In Grass Creek, in October, snow falls for 5.2 days, with typically accumulated 2.99" (76mm) of snow. In Grass Creek, Wyoming, during the entire year, snow falls for 55.8 days and aggregates up to 30.31" (770mm) of snow.

Daylight

In October, the average length of the day is 10h and 59min.
On the first day of the month, sunrise is at 7:13 am and sunset at 6:54 pm. On the last day of October, sunrise is at 7:50 am and sunset at 6:05 pm MDT.

Sunshine

In Grass Creek, the average sunshine in October is 6.9h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In October, an average UV index of 2 transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in October?

In October, in Grass Creek, the average high-temperature is 48.9°F (9.4°C), and the average low-temperature is 32.7°F (0.4°C).

What is the average humidity in October?

In Grass Creek, the average relative humidity in October is 59%.

How many days does it rain in October?

In October, in Grass Creek, the rain falls for 5.5 days. Throughout October, 0.83" (21mm) of precipitation is accumulated.

How much does it snow in October?

In October, it is snowing for 5.2 days. Throughout October, 2.99" (76mm) of snow is accumulated.

How many hours of daylight does Grass Creek have in October?

The average day length in October is 10h and 59min.

When are sunrise and sunset in October in Grass Creek?

In October, on the first day of the month, sunrise is at 7:13 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 6:05 pm MDT.

How many hours of sunshine does Grass Creek have in October?

The average sunshine duration in October is 6.9h.

What is the month with the lowest UV index?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in October?

In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Grass Creek, WY

Average temperature in October - Grass Creek, WY
  • Average high temperature in October: 48.9°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is December (27.3°F).

  • Average low temperature in October: 32.7°F

The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is December (11.8°F).

Average pressure in October
Grass Creek, WY

Average pressure in October - Grass Creek, WY
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in October
Grass Creek, WY

Average wind speed in October - Grass Creek, WY
  • Average wind speed in October: 6.6mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in October
Grass Creek, WY

Average humidity in October - Grass Creek, WY
  • Average humidity in October: 59%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is July (43%).

Average rainfall in October
Grass Creek, WY

Average rainfall in October - Grass Creek, WY
  • Average rainfall in October: 0.83"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.2").

Average rainfall days in October
Grass Creek, WY

Average rainfall days in October - Grass Creek, WY
  • Average rainfall days in October: 5.5 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (1.6 days).

Average snowfall in October
Grass Creek, WY

Average snowfall in October - Grass Creek, WY
  • Average snowfall in October: 2.99"

The month with the highest snowfall is April (6.3").
The months with the least snowfall are July and August (0").

Average snowfall days in October
Grass Creek, WY

Average snowfall days in October - Grass Creek, WY
  • Average snowfall days in October: 5.2 days

The month with the highest number of snowfall days is April (9.4 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in October /
Average sunshine in October
Grass Creek, WY

Average daylight in October / Average sunshine in October - Grass Creek, WY
  • Average daylight in October: 11h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in October: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).

Average sunshine days in October
Grass Creek, WY

Average sunshine days in October - Grass Creek, WY
  • Average sunshine days in October: 21.7 days

The month with the most sunshine days is January (25 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in October
Grass Creek, WY

Average UV index in October - Grass Creek, WY
  • Average UV index in October: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in October
Grass Creek, WY

Average cloud cover in October - Grass Creek, WY
  • Average cloud cover in October: 24

The month with the most cloud cover is April (Cloud cover 35).
The months with the least cloud cover are July and September (Cloud cover 17).

Average visibility in October
Grass Creek, WY

Average visibility in October - Grass Creek, WY
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Grass Creek, Wyoming, USA

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