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 shift from April to May sees a slight increase in the average high-temperature, transitioning from a moderately hot 74.5°F (23.6°C) to a still warm 81.1°F (27.3°C). Sunnyvale's temperature drops to an average low of 64°F (17.8°C) during the nights of May.Heat index
May's heat index is estimated at a hot 86°F (30°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
May is the most humid month in Sunnyvale, with an average relative humidity of 75%.Rainfall
In Sunnyvale, in May, it is raining for 15.4 days, with typically 4.17" (106mm) of accumulated precipitation. In Sunnyvale, during the entire year, the rain falls for 149.6 days and collects up to 33.35" (847mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In May, the average length of the day in Sunnyvale is 13h and 52min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:08 pm. On the last day of May, in Sunnyvale, sunrise is at 6:19 am and sunset at 8:29 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Sunnyvale in May?
What is the most humid month in Sunnyvale?
What is the average humidity in May in Sunnyvale?
How much does it rain in Sunnyvale in May?
When it does not snow in Sunnyvale?
How many hours of daylight does Sunnyvale have in May?
When are sunrise and sunset in May in Sunnyvale?
How long on average sun shines in May in Sunnyvale?
What is the UV index intensity in May in Sunnyvale?
Average temperature in May
Sunnyvale, TX
- Average high temperature in May: 81.1°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in May: 64°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in May
Sunnyvale, TX
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Sunnyvale, TX
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in May
Sunnyvale, TX
- Average humidity in May: 75%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).
Average rainfall in May
Sunnyvale, TX
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is October (4.29").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in May
Sunnyvale, TX
- 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 January (7.6 days).
Average snowfall in May
Sunnyvale, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Sunnyvale, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Sunnyvale, TX
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in May
Sunnyvale, TX
- Average sunshine days in May: 14.1 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is September (13 days).
Average UV index in May
Sunnyvale, TX
- 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 and December (UV index 3).
Average cloud cover in May
Sunnyvale, TX
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in May
Sunnyvale, TX
- 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).
Sunnyvale, Texas, USA
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