May weather forecastPortland, TX
May
Weather in May
May, the last month of the spring in Portland, is another warm month, with temperature in the range of an average low of 73.4°F (23°C) and an average high of 82.9°F (28.3°C).Temperature
The onset of May brings a minor temperature shift, with the average high-temperature moving from a warm 77.5°F (25.3°C) in April to a still moderately hot 82.9°F (28.3°C). May is noted for a mean low-temperature of 73.4°F (23°C).Heat index
The heat index in May is appraised at a hot 91.4°F (33°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
March and May, with an average relative humidity of 78%, are the most humid months.Rainfall
In Portland, in May, during 10 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Portland, during the entire year, the rain falls for 126.7 days and collects up to 13.78" (350mm) of precipitation.Snowfall
January, March through November are months without snowfall in Portland, Texas.Daylight
In May, the average length of the day in Portland is 13h and 32min.On the first day of May in Portland, sunrise is at 6:48 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 8:20 pm CDT.
Sunshine
In May, the average sunshine in Portland is 9.9h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In May, the UV index of 7 transforms into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Portland, TX
- Average high temperature in May: 82.9°F
The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (63.7°F).
- Average low temperature in May: 73.4°F
The month with the highest average low temperature is August (80.8°F).
The coldest month (with the lowest average low temperature) is January (52.3°F).
Average pressure in May
Portland, TX
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).
Average wind speed in May
Portland, TX
- Average wind speed in May: 12.6mph
The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is September (9.6mph).
Average humidity in May
Portland, TX
- Average humidity in May: 78%
The months with the highest relative humidity are March and May (78%).
The months with the lowest relative humidity are August and October (71%).
Average rainfall in May
Portland, TX
- Average rainfall in May: 1.02"
The wettest month (with the highest rainfall) is September (2.64").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in May
Portland, TX
- Average rainfall days in May: 10 days
The month with the highest number of rainy days is September (17.9 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in May
Portland, TX
- Average snowfall in May: 0"
The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Portland, TX
- 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
Portland, TX
- Average daylight in May: 13h and 30min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in May: 9h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in May
Portland, TX
- Average sunshine days in May: 17.6 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is September (10.4 days).
Average UV index in May
Portland, TX
- Average UV index in May: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in May
Portland, TX
- Average cloud cover in May: 34
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in May
Portland, 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).
