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
A mild shift in the average high-temperature occurs in September, reducing from a warm 80.2°F (26.8°C) in August to a pleasant 73.2°F (22.9°C). In the month of September, Sunbury witnesses a consistent average low-temperature of 53.4°F (11.9°C).Humidity
In Sunbury, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 9.2 days and accumulates 0.75" (19mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:50 pm EDT.
Sunshine
In Sunbury, the average sunshine in September is 8.8h.UV index
In Sunbury, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sunbury in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Sunbury, PA
- Average high temperature in September: 73.2°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 (32.2°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Sunbury, PA
- Average pressure in September: 30.07"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Sunbury, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Sunbury, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in September
Sunbury, PA
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days in September
Sunbury, PA
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Sunbury, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Sunbury, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sunbury, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).
Average sunshine days in September
Sunbury, PA
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
Sunbury, PA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Sunbury, PA
- Average cloud cover in September: 37
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Sunbury, PA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Sunbury, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location