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 is characterized by a mild reduction in the average high-temperature, from a warm 80.2°F (26.8°C) in August to a pleasant 72.5°F (22.5°C). During September, Petersburg experiences a consistent low-temperature average of 52.3°F (11.3°C).Humidity
In September, the average relative humidity in Petersburg is 79%.Rainfall
In September, in Petersburg, Pennsylvania, the rain falls for 12.7 days. Throughout September, 1.73" (44mm) of precipitation is accumulated. In Petersburg, during the entire year, the rain falls for 166.2 days and collects up to 23.86" (606mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:43 pm. On the last day of September, in Petersburg, sunrise is at 7:08 am and sunset at 6:55 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Petersburg, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Suggestions to resist sunburn are communicated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the usual temperature for Petersburg in September?
What is the average humidity in September in Petersburg?
How many days does it rain in September in Petersburg?
When it does not snow in Petersburg?
Does it snow in Petersburg in September?
What is the average length of the day in September in Petersburg?
When are sunrise and sunset in September in Petersburg?
How many hours of sunshine does Petersburg have in September?
What is the UV index reading in September in Petersburg?
Average temperature in September
Petersburg, PA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Petersburg, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Petersburg, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Petersburg, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Petersburg, PA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Petersburg, PA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Petersburg, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Petersburg, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15 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, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Petersburg, PA
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
Petersburg, PA
- Average UV index in September: 3
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Petersburg, PA
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Petersburg, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Petersburg, Pennsylvania, USA
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