May weather forecastSouth Houston, TX
May
Weather in May
May, the last month of the spring in South Houston, is another warm month, with an average temperature ranging between max 84.4°F (29.1°C) and min 70.3°F (21.3°C).Temperature
As May arrives, South Houston's weather shows a minor increase in high-temperatures, edging from April's moderately hot 77.7°F (25.4°C) to a still warm 84.4°F (29.1°C). Throughout May, the nighttime temperature in South Houston averages to a pleasant 70.3°F (21.3°C).Heat index
Throughout May, the heat index is calculated to be a tropical 93.2°F (34°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in May is 75%.Rainfall
In South Houston, in May, it is raining for 15.2 days, with typically 4.96" (126mm) of accumulated precipitation. In South Houston, during the entire year, the rain falls for 190.8 days and collects up to 41.93" (1065mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In South Houston, Texas, the average length of the day in May is 13h and 39min.On the first day of May in South Houston, sunrise is at 6:37 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 8:16 pm CDT.
Sunshine
The average sunshine in May in South Houston is 9.7h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 7 during May translates into the following directions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
South Houston, TX
- Average high temperature in May: 84.4°F
The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (60.6°F).
- Average low temperature in May: 70.3°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in May
South Houston, TX
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
South Houston, TX
- Average wind speed in May: 8.6mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are August and September (6.5mph).
Average humidity in May
South Houston, TX
- Average humidity in May: 75%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in May
South Houston, TX
- Average rainfall in May: 4.96"
The wettest month (with the highest rainfall) is September (5.94").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in May
South Houston, TX
- Average rainfall days in May: 15.2 days
The months with the highest number of rainy days are August and September (21.3 days).
The month with the least rainy days is January (12.3 days).
Average snowfall in May
South Houston, TX
- Average snowfall in May: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
South Houston, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
South Houston, TX
- Average daylight in May: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in May: 9h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in May
South Houston, TX
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is January (16.4 days).
The months with the least sunshine days are August and September (6.9 days).
Average UV index in May
South Houston, TX
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in May
South Houston, TX
- Average cloud cover in May: 35
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 27).
Average visibility in May
South Houston, 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).
