September weather forecastFranklin, PA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Franklin, Pennsylvania, with an average temperature ranging between min 52.3°F (11.3°C) and max 72.3°F (22.4°C).Temperature
September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 78.4°F (25.8°C) in August to a pleasant 72.3°F (22.4°C). Franklin encounters an average low-temperature of 52.3°F (11.3°C) during September nights.Humidity
In Franklin, Pennsylvania, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 16.4 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. In Franklin, during the entire year, the rain falls for 186 days and collects up to 38.03" (966mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Franklin, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:46 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:02 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In Franklin, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Ensure safety - Sun damage prevention is strongly urged. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Franklin, PA
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in September
Franklin, PA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Franklin, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Franklin, PA
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in September
Franklin, PA
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is November (2.44").
Average rainfall days in September
Franklin, PA
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Franklin, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (11.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Franklin, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Franklin, PA
- Average daylight in September: 12h and 30min
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 12min).
- Average sunshine in September: 8h and 6min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Franklin, PA
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is November (11.3 days).
The month with the least sunshine days is February (5 days).
Average UV index in September
Franklin, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Franklin, PA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Franklin, PA
- Average visibility in September: 4mi
The months with the highest visibility are March, April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, September and December (4mi).
