Gettysburg
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Gettysburg, PA

The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, clear sky
The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, clear sky
September, the first month of the autumn, in Gettysburg, is also a moderately hot month, with average temperature varying between 77°F (25°C) and 53.1°F (11.7°C).

Temperature

In September, the average high-temperature slightly decreases, from 84°F (28.9°C) in August, to a still warm 77°F (25°C). In Gettysburg, in September, the average low-temperature is 53.1°F (11.7°C).

Rainfall

In Gettysburg, Pennsylvania, during September, the rain falls for 9 days and regularly aggregates up to 4.2" (107.2mm) of precipitation. In Gettysburg, during the entire year, the rain falls for 125 days and collects up to 43.2" (1098.1mm) of precipitation.

Daylight

In September, the average length of the day in Gettysburg is 12.4h.

Sunshine

In September, the average sunshine in Gettysburg is 7h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Gettysburg?

The average high-temperature, in September, in Gettysburg, Pennsylvania, is 77°F (25°C), while the average low-temperature is 53.1°F (11.7°C).

How much does it rain in Gettysburg in September?

In Gettysburg, Pennsylvania, during September, the rain falls for 9 days and regularly aggregates up to 4.2" (107.2mm) of precipitation.

What is the average length of the day in September in Gettysburg?

In Gettysburg, the average length of the day in September is 12.4h.

How long on average sun shines in September in Gettysburg?

In September, the average sunshine in Gettysburg, Pennsylvania, is 7h.

What is the UV index intensity in September in Gettysburg?

In Gettysburg, Pennsylvania, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Gettysburg, PA
  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in September: 53°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average rainfall in September - Gettysburg, PA
  • Average rainfall in September: 4.2"

Wettest months (with the highest rainfall) are May and June (4.3").
The driest month (with the lowest rainfall) is February (3").

Average rainfall days in September - Gettysburg, PA
  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is May (12 days).
Months with the lowest number of rainy days are September and October (9 days).

Average daylight in September / Average sunshine in September - Gettysburg, PA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 7h

Months with most sunshine are June, July and August (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in September - Gettysburg, PA
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).