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
A soft shift in the average high-temperature is noticeable in May, transitioning from a moderately hot 74.8°F (23.8°C) in April to a still warm 82.2°F (27.9°C). The month of May sees a significant daily temperature drop, recording an average low-temperature of 60.1°F (15.6°C).Heat index
For most parts of May, the heat index is calculated to be 82.4°F (28°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Note that heat index values are valued for light wind and location in the shade. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
The average relative humidity in May is 42%.Rainfall
In Petersburg, in May, it is raining for 9.3 days, with typically 1.97" (50mm) of accumulated precipitation. In Petersburg, during the entire year, the rain falls for 86.7 days and collects up to 14.21" (361mm) of precipitation.Snowfall
In Petersburg, snow does not fall in May through September.Daylight
In Petersburg, the average length of the day in May is 13h and 56min.On the first day of the month, sunrise is at 6:56 am and sunset at 8:30 pm. On the last day of May, in Petersburg, Texas, sunrise is at 6:36 am and sunset at 8:51 pm CDT.
Sunshine
The average sunshine in May is 10.9h.UV index
The months with the highest UV index are May through July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 7 in May leads to these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Petersburg in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Petersburg have in May?
What are the months with the highest UV index?
How high is the UV index in May?
Average temperature in May
Petersburg, TX
- Average high temperature in May: 82.2°F
The warmest months (with the highest average high temperature) are June, July and August (91.9°F).
The month with the lowest average high temperature is December (52.2°F).
- Average low temperature in May: 60.1°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in May
Petersburg, TX
- Average pressure in May: 29.85"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Petersburg, TX
- Average wind speed in May: 12.5mph
The windiest month (with the highest average wind speed) is April (13.2mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).
Average humidity in May
Petersburg, TX
- Average humidity in May: 42%
The month with the highest relative humidity is September (58%).
The month with the lowest relative humidity is April (39%).
Average rainfall in May
Petersburg, TX
- Average rainfall in May: 1.97"
The wettest month (with the highest rainfall) is September (2.2").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in May
Petersburg, TX
- Average rainfall days in May: 9.3 days
The month with the highest number of rainy days is September (12.7 days).
The month with the least rainy days is November (3 days).
Average snowfall in May
Petersburg, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Petersburg, TX
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is December (2.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Petersburg, TX
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are November and December (Average sunshine: 6h and 54min).
Average sunshine days in May
Petersburg, TX
- Average sunshine days in May: 18.7 days
The month with the most sunshine days is January (27 days).
The month with the least sunshine days is September (14.9 days).
Average UV index in May
Petersburg, TX
- Average UV index in May: 7
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Petersburg, TX
- Average cloud cover in May: 19
The month with the most cloud cover is September (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 14).
Average visibility in May
Petersburg, 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).
Petersburg, Texas, USA
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