May weather forecastRalston, WY
May
Weather in May
The last month of the spring, May, is a comfortable month in Ralston, Wyoming, with an average temperature varying between 62.8°F (17.1°C) and 44.2°F (6.8°C).Temperature
May signals a shift in the average high-temperature, moving from April's fresh 52.3°F (11.3°C) to an enjoyable 62.8°F (17.1°C). An average low-temperature of 44.2°F (6.8°C) is recorded in the month of May.Humidity
In Ralston, the average relative humidity in May is 51%.Rainfall
May is the month with the most rainfall. Rain falls for 15.4 days and accumulates 1.5" (38mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Ralston, in May, snow falls for 1.5 days, with typically accumulated 1.5" (38mm) of snow. Throughout the year, there are 52.1 snowfall days, and 16.97" (431mm) of snow is accumulated.Daylight
In Ralston, the average length of the day in May is 14h and 51min.On the first day of the month, sunrise is at 6:03 am and sunset at 8:20 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:53 pm MDT.
Sunshine
In Ralston, the average sunshine in May is 11.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ralston, WY
- Average high temperature in May: 62.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 44.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (15.6°F).
Average pressure in May
Ralston, WY
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and December (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Ralston, WY
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Ralston, WY
- Average humidity in May: 51%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in May
Ralston, 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 January (0.31").
Average rainfall days in May
Ralston, WY
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is December (4.9 days).
Average snowfall in May
Ralston, WY
- Average snowfall in May: 1.5"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Ralston, WY
- Average snowfall days in May: 1.5 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Ralston, WY
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 11h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days in May
Ralston, WY
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in May
Ralston, WY
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Ralston, WY
- Average cloud cover in May: 27
The month with the most cloud cover is February (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 13).
Average visibility in May
Ralston, 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).
