May weather forecastPowder River, WY
May
Weather in May
May, the last month of the spring in Powder River, is a refreshing month, with an average temperature varying between 62.6°F (17°C) and 42.1°F (5.6°C).Temperature
Noticing a change, the average high-temperature during May moves from April's fresh 52°F (11.1°C) to an enjoyable 62.6°F (17°C). An average low-temperature of 42.1°F (5.6°C) is noted during the month of May.Humidity
In May, the average relative humidity is 53%.Rainfall
The month with the most rainfall is May, when the rain falls for 10.9 days and typically aggregates up to 1.34" (34mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 2.3 snowfall days, in May, Powder River aggregates 2.4" (61mm) of snow. Throughout the year, there are 62.6 snowfall days, and 31.65" (804mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 41min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:09 pm. On the last day of May, sunrise is at 5:31 am and sunset at 8:40 pm MDT.
Sunshine
In Powder River, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 5 in May leads to these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Powder River, WY
- Average high temperature in May: 62.6°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in May: 42.1°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in May
Powder River, WY
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Powder River, WY
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in May
Powder River, WY
- Average humidity in May: 53%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (36%).
Average rainfall in May
Powder River, WY
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in May
Powder River, WY
- Average rainfall days in May: 10.9 days
The month with the highest number of rainy days is May (10.9 days).
The month with the least rainy days is December (3.3 days).
Average snowfall in May
Powder River, WY
- Average snowfall in May: 2.4"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Powder River, WY
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Powder River, WY
- Average daylight in May: 14h and 42min
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: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in May
Powder River, WY
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is April (13.6 days).
Average UV index in May
Powder River, WY
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Powder River, WY
- Average cloud cover in May: 27
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Powder River, 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).
