May weather forecast
Big Piney, WY

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Weather in May

The month of May in Big Piney is a true depiction of spring with mild temperatures, an increased rainfall of 1.65" (42mm) in 14.3 days, and the disappearance of heavy snowfalls with a mere recording of 2.36" (60mm). Daylight hours extend up to 14.6 hours, paired with sunshine duration of 11.1 hours per day, and 10.9 sunshine days promise lovely weather for outdoor leisure. The pressure is relatively stable, and the wind consistently blows at moderate speeds during the month. An abundance of greenery, blooming flowers, and favorable weather conditions manifest in Big Piney's vibrant spring in May.

Temperature

In Big Piney, the average high-temperature in May increases from a chilly 43°F (6.1°C) in April to a cool 55°F (12.8°C). Nighttime temperature in Big Piney experiences an average drop to an icy 36.5°F (2.5°C) in May.

Humidity

The average relative humidity in May is 57%.

Rainfall

May is the month with the most rainfall in Big Piney. Rain falls for 14.3 days and accumulates 1.65" (42mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In May, in Big Piney, it is snowing for 3.8 days. Throughout May, 2.36" (60mm) of snow is accumulated. Throughout the year, there are 89 snowfall days, and 43.43" (1103mm) of snow is accumulated.

Daylight

In Big Piney, Wyoming, the average length of the day in May is 14h and 38min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of May, in Big Piney, sunrise is at 5:45 am and sunset at 8:50 pm MDT.

Sunshine

In May, the average sunshine in Big Piney is 11.1h.

UV index

In Big Piney, Wyoming, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 4 in May translates into these instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Big Piney?

The average high-temperature, in May, in Big Piney, is 55°F (12.8°C), while the average low-temperature is 36.5°F (2.5°C).

What is the average humidity in May in Big Piney?

The average relative humidity in May in Big Piney, Wyoming, is 57%.

What is the rainiest month in Big Piney?

The month with the most rainfall in Big Piney, Wyoming, is May, when the rain falls for 14.3 days and typically aggregates up to 1.65" (42mm) of precipitation.

How much does it rain in Big Piney in May?

In Big Piney, Wyoming, during May, the rain falls for 14.3 days and regularly aggregates up to 1.65" (42mm) of precipitation.

How many days does it snow in May in Big Piney?

In May, in Big Piney, it is snowing for 3.8 days. Throughout May, 2.36" (60mm) of snow is accumulated.

How many hours of daylight does Big Piney have in May?

The average day length in May in Big Piney is 14h and 38min.

When is the sunrise / sunset in May in Big Piney?

On the first day of May in Big Piney, Wyoming, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:50 pm MDT.

How long on average sun shines in May in Big Piney?

The average sunshine duration in May is 11.1h.

What is the UV index intensity in May in Big Piney?

The average daily maximum UV index in May in Big Piney, Wyoming, is 4. A UV Index estimate of 3 to 5 represents a medium health risk 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 May
Big Piney, WY

Average temperature in May - Big Piney, WY
  • Average high temperature in May: 55°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (23.7°F).

  • Average low temperature in May: 36.5°F

The month with the highest average low temperature is July (52°F).
The coldest month (with the lowest average low temperature) is December (5°F).

Average pressure in May
Big Piney, WY

Average pressure in May - Big Piney, WY
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Big Piney, WY

Average wind speed in May - Big Piney, WY
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).

Average humidity in May
Big Piney, WY

Average humidity in May - Big Piney, WY
  • Average humidity in May: 57%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).

Average rainfall in May
Big Piney, WY

Average rainfall in May - Big Piney, WY
  • Average rainfall in May: 1.65"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are July and August (0.63").

Average rainfall days in May
Big Piney, WY

Average rainfall days in May - Big Piney, WY
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (6.9 days).

Average snowfall in May
Big Piney, WY

Average snowfall in May - Big Piney, WY
  • Average snowfall in May: 2.36"

The month with the highest snowfall is April (7.36").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Big Piney, WY

Average snowfall days in May - Big Piney, WY
  • Average snowfall days in May: 3.8 days

The months with the highest number of snowfall days are February and March (15.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in May /
Average sunshine in May
Big Piney, WY

Average daylight in May / Average sunshine in May - Big Piney, WY
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).

Average sunshine days in May
Big Piney, WY

Average sunshine days in May - Big Piney, WY
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in May
Big Piney, WY

Average UV index in May - Big Piney, WY
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (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 May
Big Piney, WY

Average cloud cover in May - Big Piney, WY
  • Average cloud cover in May: 26

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in May
Big Piney, WY

Average visibility in May - Big Piney, WY
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Big Piney, Wyoming, USA

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