May weather forecastSierra Vista, CA
May
Weather in May
The last month of the spring, May, is also a moderately hot month in Sierra Vista, California, with an average temperature varying between 81.5°F (27.5°C) and 55.4°F (13°C).Temperature
The start of May is characterized by a subtle increase in the average high-temperature, transitioning from 73.4°F (23°C) in April to a still warm 81.5°F (27.5°C). Sierra Vista's average nighttime temperature descends significantly from the day's peak in May, settling at a refreshing 55.4°F (13°C).Heat index
The heat index in May is evaluated at 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In May, the average relative humidity 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
In May, the average length of the day 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, sunrise is at 5:42 am and sunset at 8:15 pm PDT.
Sunshine
In Sierra Vista, the average sunshine in May is 11.5h.UV index
In Sierra Vista, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, the maximum UV index of 6 suggests these recommendations:
Ward off overexposure. Defence against solar harm is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 12min
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 30min
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).
