May weather forecast
Grass Creek, WY

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Weather in May

May, the last month of the spring in Grass Creek, is a cool month, with an average temperature fluctuating between 36.7°F (2.6°C) and 54.1°F (12.3°C).

Temperature

Grass Creek sees an increase in the average high-temperature with the arrival of May, moving from April's chilly 44.1°F (6.7°C) to a cool 54.1°F (12.3°C). During May in Grass Creek, the average low-temperature is recorded at an icy 36.7°F (2.6°C).

Humidity

The average relative humidity in May in Grass Creek is 62%.

Rainfall

May is the month with the most rainfall in Grass Creek. Rain falls for 16.9 days and accumulates 2.48" (63mm) of precipitation.

Snowfall

Months with snowfall in Grass Creek are January through June, September through December. In Grass Creek, during May, snow falls for 4.7 days and regularly aggregates up to 5.35" (136mm) of snow. Throughout the year, in Grass Creek, there are 55.8 snowfall days, and 30.31" (770mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 46min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:18 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:49 pm MDT.

Sunshine

In Grass Creek, Wyoming, the average sunshine in May is 10.2h.

UV index

In Grass Creek, Wyoming, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What is the usual temperature for Grass Creek in May?

The high-temperature, in May, in Grass Creek, records 54.1°F (12.3°C), while the low-temperature is 36.7°F (2.6°C).

What is the average humidity in May in Grass Creek?

In May, the average relative humidity in Grass Creek is 62%.

What is the wettest month in Grass Creek?

May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 2.48" (63mm) of precipitation.

How much does it rain in Grass Creek in May?

In Grass Creek, in May, during 16.9 rainfall days, 2.48" (63mm) of precipitation is typically accumulated.

How much does it snow in Grass Creek in May?

In Grass Creek, Wyoming, during May, snow falls for 4.7 days and regularly aggregates up to 5.35" (136mm) of snow.

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

In May, the average day length in Grass Creek is 14h and 46min.

What time are sunrise and sunset in May in Grass Creek?

In May, on the first day of the month, sunrise is at 6:04 am and sunset at 8:18 pm. On the last day of the month, in Grass Creek, Wyoming, sunrise is at 5:34 am and sunset at 8:49 pm MDT.

How long on average sun shines in May in Grass Creek?

In May, the average sunshine duration in Grass Creek is 10.2h.

What is the UV index intensity in May in Grass Creek?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium hazard to health 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 May
Grass Creek, WY

Average temperature in May - Grass Creek, WY
  • Average high temperature in May: 54.1°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 May: 36.7°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).

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Average pressure in May
Grass Creek, WY

Average pressure in May - Grass Creek, WY
  • Average pressure in May: 29.93"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).

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Average wind speed in May
Grass Creek, WY

Average wind speed in May - Grass Creek, WY
  • Average wind speed in May: 6.5mph

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).

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Average humidity in May
Grass Creek, WY

Average humidity in May - Grass Creek, WY
  • Average humidity in May: 62%

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

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Average rainfall in May
Grass Creek, WY

Average rainfall in May - Grass Creek, WY
  • Average rainfall in May: 2.48"

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

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Average rainfall days in May
Grass Creek, WY

Average rainfall days in May - Grass Creek, WY
  • Average rainfall days in May: 16.9 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).

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Average snowfall in May
Grass Creek, WY

Average snowfall in May - Grass Creek, WY
  • Average snowfall in May: 5.35"

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

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Average snowfall days in May
Grass Creek, WY

Average snowfall days in May - Grass Creek, WY
  • Average snowfall days in May: 4.7 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).

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

Average daylight in May / Average sunshine in May - Grass Creek, WY
  • Average daylight in May: 14h and 5min

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 May: 10h and 1min

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).

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Average sunshine days in May
Grass Creek, WY

Average sunshine days in May - Grass Creek, WY
  • Average sunshine days in May: 10.2 days

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

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Average UV index in May
Grass Creek, WY

Average UV index in May - Grass Creek, WY
  • Average UV index in May: 4

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).

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Average cloud cover in May
Grass Creek, WY

Average cloud cover in May - Grass Creek, WY
  • Average cloud cover in May: 33

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).

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Average visibility in May
Grass Creek, WY

Average visibility in May - Grass Creek, WY
  • Average visibility in May: 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).

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Grass Creek, Wyoming, USA

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