Philadelphia weather in October
In October, Philadelphia has an average high of 19 °C67 °F and an average low of 8 °C47 °F, with about 110 mm4.3 in of precipitation. It is the 6th warmest month of the year and ranks 5th for precipitation.
How October compares with other months
Compared with September, October is 6.9 °C12.3 °F cooler on average and wetter by 8 mm0.3 in. Compared with November, October is 6.4 °C11.6 °F warmer on average and wetter by 20 mm0.8 in. Daylight lasts about 11.1 hours around the middle of the month. Average relative humidity is 78% and the average cloud amount 53%.
Is October a good time to visit Philadelphia?
October is not among the most comfortable months by our comfort score: it is cool (average high 19 °C67 °F) and it is fairly wet (110 mm4.3 in). The most comfortable months in Philadelphia are May and September.
What to wear in October
For Philadelphia in October, pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Philadelphia | 1967 | 847 | 1104.3 |
| Allentown | 1865 | 745 | 1164.5 |
| Atlantic City | 1966 | 1254 | 1174.6 |
| Staten Island | 1965 | 948 | 1144.5 |
| Brooklyn | 1864 | 1254 | 1244.9 |
| New York City | 1864 | 1254 | 1244.9 |
| Paterson | 1865 | 745 | 1214.8 |
| Manhattan | 1864 | 847 | 1224.8 |
| Baltimore | 1967 | 948 | 1084.3 |
Nearby places that are more than 1 °C1.8 °F warmer in October: Atlantic City, Brooklyn and New York City; cooler: Allentown.
Other months in Philadelphia
- January3 °C38 °F / −5 °C23 °F
- February5 °C41 °F / −4 °C24 °F
- March10 °C50 °F / −1 °C31 °F
- April17 °C63 °F / 5 °C41 °F
- May22 °C72 °F / 11 °C52 °F
- June27 °C81 °F / 17 °C62 °F
- July30 °C86 °F / 20 °C67 °F
- August30 °C85 °F / 19 °C66 °F
- September26 °C79 °F / 15 °C59 °F
- October19 °C67 °F / 8 °C47 °F
- November12 °C54 °F / 2 °C36 °F
- December7 °C44 °F / −2 °C28 °F
Frequently asked questions
How warm is Philadelphia in October?
In October the average high in Philadelphia is 19 °C (67 °F) and the average low is 8 °C (47 °F).
Does it rain a lot in Philadelphia in October?
On average about 110 mm (4.3 in) of precipitation falls in October; it ranks 5th of the 12 months.
Is October the warmest month in Philadelphia?
No. The warmest month in Philadelphia is July, with an average high of 30 °C (86 °F). The coldest month is January, with an average low of -5 °C (23 °F).
How long is the day in Philadelphia in October?
In the middle of October the day in Philadelphia lasts about 11.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Philadelphia in October?
The average relative humidity in October is about 78%. This is a long-term average for the whole day.
How cloudy is Philadelphia in October?
On average about 53% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.