United StatesThe weather in September in Yorklyn
It's warm in September in Yorklyn with an average temperature of 26°C. Temperatures this month range from a low of 21°C to a high of 31°C. At night, you can expect temperatures between 12°C and 20°C.
Looking for sun? September isn’t a good month to be in Yorklyn. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Yorklyn, Pennsylvania. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2023, Yorklyn reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 14°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 24°C.
Rainfall amount
In September, there is an average of 162 mm of precipitation, spread over 16 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Yorklyn
Click on any day in September to get detailed info about the usual weather on that day in Yorklyn. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Yorklyn | New York | |
|---|---|---|
| Average temperature | 26°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 12°C | -5°C |
| Total precipitation | 162 mm | 57 mm |
| Rainy days | 16 days | 9 days |
Start of September
The month of September starts in Yorklyn with hot temps, averaging around 28°C during the day and nights around 19°C.
Mid September
By mid-September, daytime temps drop to around 27°C, with nights around 16°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Yorklyn is around 24°C, while nighttime temps are about 14°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Yorklyn for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Yorklyn, Pennsylvania. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Yorklyn
Temperature in September in Yorklyn over the years
Precipitation charts
These charts show the average amount of precipitation in September in Yorklyn, Pennsylvania. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Yorklyn
Total precipitation in September in Yorklyn over the years
Daily UV index in September in Yorklyn
This chart shows the average daily UV index in September in Yorklyn, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Yorklyn
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Average weather in Yorklyn by month
Click on a month below to see detailed weather info for Yorklyn. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.