Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As Riverton transitions into May, the average high-temperature is observed to rise from a cool 54.1°F (12.3°C) in April to an enjoyable 64.8°F (18.2°C). An average low-temperature of 44.1°F (6.7°C) is noted during the month of May.Humidity
The average relative humidity in May is 47%.Rainfall
May is the month with the most rainfall. Rain falls for 9.9 days and accumulates 1.42" (36mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. May is the last month it regularly snows. During 2.3 snowfall days, in May, Riverton aggregates 3.39" (86mm) of snow. In Riverton, during the entire year, snow falls for 42.8 days and aggregates up to 25.47" (647mm) of snow.Daylight
The average length of the day in May is 14h and 41min.On the first day of May, sunrise is at 6:05 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:45 pm MDT.
Sunshine
In Riverton, the average sunshine in May is 11h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during May translates into these guidelines:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Riverton in May?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May in Riverton?
How many hours of sunshine does Riverton have in May?
What is the UV index intensity in May?
Average temperature in May
Riverton, WY
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in May: 44.1°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in May
Riverton, WY
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Riverton, WY
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in May
Riverton, WY
- Average humidity in May: 47%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in May
Riverton, WY
- Average rainfall in May: 1.42"
The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in May
Riverton, WY
- Average rainfall days in May: 9.9 days
The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is January (2.5 days).
Average snowfall in May
Riverton, WY
- Average snowfall in May: 3.39"
The month with the highest snowfall is April (5.39").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Riverton, WY
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Riverton, 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 0min
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 36min).
Average sunshine days in May
Riverton, WY
- Average sunshine days in May: 17 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (15.5 days).
Average UV index in May
Riverton, WY
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Riverton, WY
- Average cloud cover in May: 25
The months with the most cloud cover are February and April (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in May
Riverton, 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).
Riverton, Wyoming, USA
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