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
The average high-temperature mildly increases in May, edging from a warm 76.8°F (24.9°C) in April to a still moderately hot 85.3°F (29.6°C). An average nighttime temperature of 64.9°F (18.3°C) is observed in Boulder City during May.Humidity
The average relative humidity in May is 19%.Rainfall
May is the last month it rains in Boulder City. During 2.4 rainfall days, in May, Boulder City aggregates 0.16" (4mm) of precipitation. Throughout the year, there are 40.1 rainfall days, and 4.02" (102mm) of precipitation is accumulated.Snowfall
In Boulder City, Nevada, snow does not fall in January, March through December.Daylight
The average length of the day in May is 14h and 5min.On the first day of the month, sunrise is at 5:45 am and sunset at 7:26 pm. On the last day of May, sunrise is at 5:23 am and sunset at 7:50 pm PDT.
Sunshine
In Boulder City, the average sunshine in May is 11.9h.UV index
The average daily maximum UV index in May in Boulder City is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Boulder City during May?
What is the average humidity in May in Boulder City?
What is the last month it rains in Boulder City?
When it does not snow in Boulder City?
How many hours of daylight does Boulder City have in May?
What time are sunrise and sunset in May in Boulder City?
How many hours of sunshine does Boulder City have in May?
What is the UV index intensity in May in Boulder City?
Average temperature in May
Boulder City, NV
- Average high temperature in May: 85.3°F
The warmest month (with the highest average high temperature) is July (101.7°F).
The month with the lowest average high temperature is December (53.1°F).
- Average low temperature in May: 64.9°F
The month with the highest average low temperature is July (81.7°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).
Average pressure in May
Boulder City, NV
- Average pressure in May: 29.81"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.77"Hg).
Average wind speed in May
Boulder City, NV
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is June (9.6mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in May
Boulder City, NV
- Average humidity in May: 19%
The month with the highest relative humidity is January (46%).
The month with the lowest relative humidity is June (14%).
Average rainfall in May
Boulder City, NV
- Average rainfall in May: 0.16"
The wettest months (with the highest rainfall) are February, November and December (0.51").
The driest month (with the least rainfall) is June (0").
Average rainfall days in May
Boulder City, NV
- Average rainfall days in May: 2.4 days
The month with the highest number of rainy days is December (5.3 days).
The month with the least rainy days is June (0.4 days).
Average snowfall in May
Boulder City, NV
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Boulder City, NV
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Boulder City, NV
- Average daylight in May: 14h and 1min
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 48min).
- Average sunshine in May: 11h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in May
Boulder City, NV
- Average sunshine days in May: 27.7 days
The month with the most sunshine days is June (29.3 days).
The months with the least sunshine days are July and August (22.9 days).
Average UV index in May
Boulder City, NV
- Average UV index in May: 7
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in May
Boulder City, NV
- Average cloud cover in May: 10
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in May
Boulder City, NV
- 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).
Boulder City, Nevada, USA
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