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
September ushers in a minor alteration in Petersburg's climate, with the average high-temperature moving from August's 83.3°F (28.5°C) to a still warm 77.2°F (25.1°C). During September, the average low-temperature is a moderate 58.5°F (14.7°C).Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.5 days and accumulates 1.65" (42mm) of precipitation.Snowfall
In Petersburg, snow does not fall in May through October.Daylight
In September, the average length of the day in Petersburg is 12h and 26min.On the first day of September, sunrise is at 7:08 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:23 pm EDT.
Sunshine
The average sunshine in September in Petersburg, Kentucky, is 8.3h.UV index
In Petersburg, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Petersburg have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Petersburg?
How high is the UV index in September?
Average temperature in September
Petersburg, KY
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Petersburg, KY
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Petersburg, KY
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.1mph).
Average humidity in September
Petersburg, KY
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are September and October (75%).
Average rainfall in September
Petersburg, KY
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Petersburg, KY
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Petersburg, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Petersburg, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Petersburg, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Petersburg, KY
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Petersburg, KY
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Petersburg, KY
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Petersburg, KY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Petersburg, Kentucky, USA
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