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 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 transition from April to May brings a subtle temperature rise, with average high-temperatures increasing from 73.4°F (23°C) to a still warm 81.5°F (27.5°C). During May, the nighttime temperature in Sierra Vista, California, presents a clear descent from the daily peaks, falling to an average of 55.4°F (13°C).Heat index
The heat index in May is computed to be 82.4°F (28°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
The average relative humidity in May in Sierra Vista is 46%.Rainfall
In Sierra Vista, in May, it is raining for 3.3 days, with typically 0.47" (12mm) of accumulated precipitation. In Sierra Vista, during the entire year, the rain falls for 51 days and collects up to 7.56" (192mm) of precipitation.Daylight
The average length of the day in May is 14h and 11min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:50 pm. On the last day of May, in Sierra Vista, sunrise is at 5:42 am and sunset at 8:15 pm PDT.
Sunshine
The average sunshine in May is 11.5h.UV index
In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 6 in May leads to these recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the average May temperature in Sierra Vista?
What is the average humidity in May in Sierra Vista?
How much does it rain in Sierra Vista in May?
What is the average length of the day in May in Sierra Vista?
When is the sunrise / sunset in May in Sierra Vista?
How many hours of sunshine does Sierra Vista have in May?
What is the UV index reading in May in Sierra Vista?
Average temperature in May
Sierra Vista, CA
- Average high temperature in May: 81.5°F
The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in May
Sierra Vista, CA
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Sierra Vista, CA
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in May
Sierra Vista, CA
- Average humidity in May: 46%
The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (31%).
Average rainfall in May
Sierra Vista, CA
- Average rainfall in May: 0.47"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in May
Sierra Vista, CA
- Average rainfall days in May: 3.3 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (0.8 days).
Average daylight in May /
Average sunshine in May
Sierra Vista, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 11h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in May
Sierra Vista, CA
- Average sunshine days in May: 27 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in May
Sierra Vista, CA
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Sierra Vista, CA
- Average cloud cover in May: 16
The months with the most cloud cover are March and December (Cloud cover 30).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in May
Sierra Vista, CA
- 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).
Sierra Vista, California, USA
Weather forecast for your location
2. Allow the app to use your location
