October weather forecast
Green River, WY

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Weather in October

Green River, Wyoming, witnesses the full swing of autumn in October. A pronounced difference is seen, particularly in temperature that dips to a significantly cooler average high of 52.5°F (11.4°C) and low of 36°F (2.2°C), compared to September. A spike in rainfall is observed, with precipitation measuring 0.94in, highlighting October as a considerably wetter month. As the days grow shorter and the daylight hours decrease, this month paves the way for the forthcoming winter season. The weather in October paints a typical picture of autumn, characterised by falling leaves and cooling temperatures in Green River.

Temperature

As September transitions into October in Green River, a clear downswing in temperatures is observed, with average highs retreating from an agreeable 70.3°F (21.3°C) to a fresh 52.5°F (11.4°C). Nighttime temperatures in October average to an icy 36°F (2.2°C) in Green River.

Humidity

The average relative humidity in October is 51%.

Rainfall

In Green River, during October, the rain falls for 7.2 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Green River, Wyoming, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.

Snowfall

Months with snowfall in Green River are January through June, September through December. In Green River, in October, during 4.2 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Green River, during the entire year, snow falls for 75.5 days and aggregates up to 30.16" (766mm) of snow.

Daylight

The average length of the day in October in Green River is 11h and 4min.
On the first day of October, sunrise is at 7:15 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 6:13 pm MDT.

Sunshine

In October, the average sunshine in Green River, Wyoming, is 7.1h.

UV index

The months with the lowest UV index in Green River are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In October, the maximum UV index of 2 translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What are the temperatures in Green River in October?

In October, in Green River, the average high-temperature is 52.5°F (11.4°C), and the average low-temperature is 36°F (2.2°C).

What is the average humidity in October in Green River?

The average relative humidity in October in Green River is 51%.

How much does it rain in Green River in October?

In Green River, Wyoming, during October, the rain falls for 7.2 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How much does it snow in Green River in October?

In October, in Green River, it is snowing for 4.2 days. Throughout October, 1.77" (45mm) of snow is accumulated.

What is the average length of the day in October in Green River?

In Green River, Wyoming, the average day length in October is 11h and 4min.

When is the sunrise / sunset in October in Green River?

In October, on the first day of the month, sunrise is at 7:15 am and sunset at 6:59 pm. On the last day of the month, in Green River, sunrise is at 7:49 am and sunset at 6:13 pm MDT.

How long on average sun shines in October in Green River?

In October, the average sunshine duration in Green River is 7.1h.

What are the months with the lowest UV index in Green River?

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

What is the UV index intensity in October in Green River?

In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
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
Green River, WY

Average temperature in October - Green River, WY
  • Average high temperature in October: 52.5°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in October: 36°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in October
Green River, WY

Average pressure in October - Green River, WY
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in October
Green River, WY

Average wind speed in October - Green River, WY
  • Average wind speed in October: 10.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in October
Green River, WY

Average humidity in October - Green River, WY
  • Average humidity in October: 51%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).

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Average rainfall in October
Green River, WY

Average rainfall in October - Green River, WY
  • Average rainfall in October: 0.94"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days in October
Green River, WY

Average rainfall days in October - Green River, WY
  • Average rainfall days in October: 7.2 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).

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Average snowfall in October
Green River, WY

Average snowfall in October - Green River, WY
  • Average snowfall in October: 1.77"

The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").

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Average snowfall days in October
Green River, WY

Average snowfall days in October - Green River, WY
  • Average snowfall days in October: 4.2 days

The month with the highest number of snowfall days is December (13.5 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
Green River, WY

Average daylight in October / Average sunshine in October - Green River, WY
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in October: 7h and 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

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Average sunshine days in October
Green River, WY

Average sunshine days in October - Green River, WY
  • Average sunshine days in October: 19.3 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in October
Green River, WY

Average UV index in October - Green River, WY
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in October
Green River, WY

Average cloud cover in October - Green River, WY
  • Average cloud cover in October: 20

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in October
Green River, WY

Average visibility in October - Green River, WY
  • Average visibility in October: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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Green River, Wyoming, USA

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