May weather forecast
Green River, WY

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Weather in May

May, the last month of the spring in Green River, is a refreshing month, with an average temperature ranging between max 60.3°F (15.7°C) and min 41.4°F (5.2°C).

Temperature

The shift from April to May brings an increase in the average high-temperature, moving from a chilly 48.7°F (9.3°C) to a refreshing 60.3°F (15.7°C). May generally records an average low-temperature of 41.4°F (5.2°C).

Humidity

In May, the average relative humidity is 47%.

Rainfall

The month with the most rainfall is May, when the rain falls for 13.8 days and typically aggregates up to 1.5" (38mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Green River, during May, snow falls for 1.8 days and regularly aggregates up to 0.87" (22mm) of snow. 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 May in Green River, Wyoming, is 14h and 32min.
On the first day of May, sunrise is at 6:13 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:45 pm MDT.

Sunshine

In May, the average sunshine is 10.9h.

UV index

In Green River, Wyoming, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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Frequently asked questions

What are the temperatures in Green River in May?

The high-temperature, in May, in Green River, records 60.3°F (15.7°C), while the low-temperature is 41.4°F (5.2°C).

What is the average humidity in May in Green River?

In Green River, the average relative humidity in May is 47%.

What is the rainiest month in Green River?

May is the month with the most rainfall in Green River. Rain falls for 13.8 days and accumulates 1.5" (38mm) of precipitation.

How many days does it rain in May in Green River?

In Green River, during May, the rain falls for 13.8 days and regularly aggregates up to 1.5" (38mm) of precipitation.

How many days does it snow in May in Green River?

In Green River, in May, snow falls for 1.8 days, with typically accumulated 0.87" (22mm) of snow.

How many hours of daylight does Green River have in May?

The average day length in May in Green River, Wyoming, is 14h and 32min.

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

On the first day of May, sunrise is at 6:13 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:45 pm MDT.

How many hours of sunshine does Green River have in May?

In May, the average sunshine duration is 10.9h.

How high is the UV index in May in Green River?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to 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 May
Green River, WY

Average temperature in May - Green River, WY
  • Average high temperature in May: 60.3°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 May: 41.4°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 May
Green River, WY

Average pressure in May - Green River, WY
  • Average pressure in May: 29.9"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 May
Green River, WY

Average wind speed in May - Green River, WY
  • Average wind speed in May: 11.1mph

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 May
Green River, WY

Average humidity in May - Green River, WY
  • Average humidity in May: 47%

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 May
Green River, WY

Average rainfall in May - Green River, WY
  • Average rainfall in May: 1.5"

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 May
Green River, WY

Average rainfall days in May - Green River, WY
  • Average rainfall days in May: 13.8 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 May
Green River, WY

Average snowfall in May - Green River, WY
  • Average snowfall in May: 0.87"

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 May
Green River, WY

Average snowfall days in May - Green River, WY
  • Average snowfall days in May: 1.8 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 May /
Average sunshine in May
Green River, WY

Average daylight in May / Average sunshine in May - Green River, WY
  • Average daylight in May: 14h and 3min

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 May: 10h and 5min

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 May
Green River, WY

Average sunshine days in May - Green River, WY
  • Average sunshine days in May: 13.4 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 May
Green River, WY

Average UV index in May - Green River, WY
  • Average UV index in May: 5

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 May
Green River, WY

Average cloud cover in May - Green River, WY
  • Average cloud cover in May: 26

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 May
Green River, WY

Average visibility in May - Green River, WY
  • Average visibility in May: 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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