Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Petersburg observes a small decrease in the average high-temperature with the arrival of September, falling from August's tropical 91.9°F (33.3°C) to a warm 83.3°F (28.5°C). Petersburg observes an average nighttime temperature of 63.1°F (17.3°C) during September.Heat index
September's average heat index is calculated to be a tropical 86°F (30°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
The most humid month is September, with an average relative humidity of 58%.Rainfall
September is the month with the most rainfall. Rain falls for 12.7 days and accumulates 2.2" (56mm) of precipitation.Snowfall
In Petersburg, Texas, snow does not fall in May through September.Daylight
In Petersburg, Texas, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:20 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:40 am and sunset at 7:31 pm CDT.
Sunshine
In September, the average sunshine in Petersburg is 9h.UV index
In Petersburg, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 6 in September translates into these instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
What is the wettest month?
How much does it rain in September?
When it does not snow in Petersburg?
Does it snow in September?
How many hours of daylight does Petersburg have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Petersburg have in September?
What is the UV index intensity in September?
Average temperature in September
Petersburg, TX
- Average high temperature in September: 83.3°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 September: 63.1°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 September
Petersburg, TX
- Average pressure in September: 29.96"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 September
Petersburg, TX
- Average wind speed in September: 9.7mph
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 September
Petersburg, TX
- Average humidity in September: 58%
The month with the highest relative humidity is September (58%).
The month with the lowest relative humidity is April (39%).
Average rainfall in September
Petersburg, TX
- Average rainfall in September: 2.2"
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 September
Petersburg, TX
- Average rainfall days in September: 12.7 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 September
Petersburg, TX
- Average snowfall in September: 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 September
Petersburg, TX
- Average snowfall days in September: 0 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 September /
Average sunshine in September
Petersburg, TX
- Average daylight in September: 12h and 2min
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 September: 9h and 0min
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 September
Petersburg, TX
- Average sunshine days in September: 14.9 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 September
Petersburg, TX
- Average UV index in September: 6
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 September
Petersburg, TX
- Average cloud cover in September: 23
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 September
Petersburg, TX
- Average visibility in September: 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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