The climate in Gettysburg during October can be summarized as cool and dry.
October is in the fall / autumn in Gettysburg and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 17°C (62°F), whilst at night 2°C (35°F) is normal.
| Daytime temperature | 16.5°C 61.7°F | 
|---|---|
| Nightly temperature | 1.7°C 35.1°F | 
| Average temperature | 9.1°C 48.4°F | 
| Daily sunshine | 7.5 hrs | 
| Avg rainfall | 29 mm 1.1 ins | 
| Rainy days | 5 days | 
| Sea temperature | 12.5°C 54.4°F | 
| Humidity | 63% | 
| Windspeed | 17.6kph 11 mph | 
On average October is the 6th driest month of the year in Gettysburg with around 29mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.5 hours of sunshine per day.
				
						
						The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Gettysburg in October 2025.
Best places to visit in October
| Hottest month: | July | 30.5°C 86.9°F | 
|---|---|---|
| Driest month: | January | 8mm 0.3ins | 
| Sunniest month: | July | 12.3hrs | 
| Coldest month: | January | -5°C 23°F | 
| Wettest month: | June | 81mm 3.2ins |