September weather forecastCroydon, PA
September
Weather in September
September, the first month of the autumn in Croydon, is also a moderately hot month, with an average temperature fluctuating between 60.8°F (16°C) and 76.5°F (24.7°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from 83.8°F (28.8°C) to a still moderately hot 76.5°F (24.7°C). Nighttime temperature lowers to an average of 60.8°F (16°C) in September.Humidity
In September, the average relative humidity is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 12.4 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Croydon, snow does not fall in June through October.Daylight
In Croydon, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:28 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Croydon, PA
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in September: 60.8°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in September
Croydon, 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 (29.93"Hg).
Average wind speed in September
Croydon, PA
- Average wind speed in September: 6.1mph
The windiest months (with the highest average wind speed) are March and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Croydon, PA
- Average humidity in September: 75%
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Croydon, PA
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Croydon, PA
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Croydon, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.95").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Croydon, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Croydon, PA
- Average daylight in September: 12h and 24min
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 24min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Croydon, PA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (12.5 days).
Average UV index in September
Croydon, PA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Croydon, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Croydon, PA
- 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).
