Weather in Philadelphia
Live weather and 7-day forecast for Philadelphia, United States, followed by what to expect in each month of the year.
Sunrise 07:19 Sunset 18:13 Daylight 10h 54m Sun times →
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7-day forecast
Forecast data from Open-Meteo
Climate in Philadelphia: month by month
Averaged over 2023–2025, the warmest month in Philadelphia is July, with highs around 32 °C (89 °F) and lows around 22 °C (71 °F); the coolest is January, with highs around 6 °C (42 °F) and lows around -2 °C (29 °F). Average lows fall below freezing in December–February.
Philadelphia gets about 1,110 mm (44 in) of precipitation a year. The wettest month is March (130 mm over about 10 days) and the driest is October (45 mm).
| Month | Avg high | Avg low | Precipitation (in) | Wet days | Daylight |
|---|---|---|---|---|---|
| January | 42° | 29° | 3.8 | 10 | 9h 39m |
| February | 47° | 30° | 2.4 | 7 | 10h 42m |
| March | 56° | 37° | 5.1 | 10 | 11h 55m |
| April | 67° | 47° | 4.7 | 11 | 13h 15m |
| May | 74° | 55° | 4.1 | 12 | 14h 23m |
| June | 85° | 64° | 3.3 | 9 | 14h 59m |
| July | 89° | 71° | 4.1 | 14 | 14h 44m |
| August | 85° | 66° | 3.9 | 9 | 13h 46m |
| September | 79° | 62° | 3.6 | 9 | 12h 29m |
| October | 69° | 51° | 1.8 | 6 | 11h 11m |
| November | 56° | 40° | 2.6 | 8 | 9h 59m |
| December | 45° | 31° | 4.4 | 10 | 9h 21m |
Averages of daily values from the ERA5 reanalysis for 2023–2025 at Philadelphia's coordinates (model elevation 32 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.
Weather questions for Philadelphia
What is the hottest month in Philadelphia?
July, with average highs of 32 °C (89 °F) and lows of 22 °C (71 °F) over 2023–2025. The coolest month is January, averaging 6 °C (42 °F) by day and -2 °C (29 °F) at night.
What is the rainiest month in Philadelphia?
March, with about 130 mm of precipitation on roughly 10 days. The driest month is October (45 mm), and the yearly total is around 1,110 mm.
When is the weather mildest in Philadelphia?
Going by the averages, April–May and September–October are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. March is the month most likely to bring rain.
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About this forecast
The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Philadelphia local time (America/New_York).