May weather forecastRound Rock, AZ
May
Weather in May
May, the last month of the spring in Round Rock, is a pleasant month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 50.5°F (10.3°C).Temperature
Observing a rise in May, the average high-temperature goes from April's enjoyable 62.2°F (16.8°C) to an agreeable 71.2°F (21.8°C). Round Rock encounters an average low-temperature of 50.5°F (10.3°C) during May nights.Humidity
In May, the average relative humidity is 27%.Rainfall
In Round Rock, in May, it is raining for 5.4 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, in Round Rock, there are 75.5 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Snowfall
Months with snowfall in Round Rock, Arizona, are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Round Rock aggregates 0.12" (3mm) of snow. In Round Rock, during the entire year, snow falls for 20.3 days and aggregates up to 12.52" (318mm) of snow.Daylight
The average length of the day in May in Round Rock is 14h and 8min.On the first day of the month, sunrise is at 6:23 am and sunset at 8:06 pm. On the last day of May, in Round Rock, sunrise is at 6:01 am and sunset at 8:30 pm MDT.
Sunshine
In May, the average sunshine in Round Rock is 11.4h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Round Rock, AZ
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in May
Round Rock, AZ
- Average pressure in May: 29.86"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Round Rock, AZ
- Average wind speed in May: 10.2mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in May
Round Rock, AZ
- Average humidity in May: 27%
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is June (19%).
Average rainfall in May
Round Rock, AZ
- Average rainfall in May: 0.47"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in May
Round Rock, AZ
- Average rainfall days in May: 5.4 days
The month with the highest number of rainy days is July (13.7 days).
The months with the least rainy days are February and June (3.3 days).
Average snowfall in May
Round Rock, AZ
- Average snowfall in May: 0.12"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Round Rock, AZ
- Average snowfall days in May: 0.1 days
The months with the highest number of snowfall days are January and December (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Round Rock, AZ
- Average daylight in May: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 11h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in May
Round Rock, AZ
- Average sunshine days in May: 23.2 days
The month with the most sunshine days is June (25.4 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in May
Round Rock, AZ
- 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
Round Rock, AZ
- Average cloud cover in May: 14
The months with the most cloud cover are January and December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 9).
Average visibility in May
Round Rock, AZ
- 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).
