Will it rain in
Philadelphia today?
Live hourly rain forecast and run verdict for Philadelphia, Pennsylvania, US.
Running in Philadelphia means navigating the mid-Atlantic's humid summers and icy winters. Whether it's a sticky run along the Schuylkill River Trail, a nor'easter dumping snow on Fairmount Park, or a crisp autumn morning through Old City, knowing whether to head out before you lace up matters. RainOrRun checks live conditions in Philadelphia right now and gives you an instant verdict — plus the best hourly window if the weather's on the fence. We'll also recommend the right gear for whatever Philly's four-season weather is throwing at you today.
What to wear
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How often does it rain in Philadelphia?
Philadelphia records around 1233mm of rain a year, spread across about 128 days — roughly 35% of all days, or 11 days in an average month. That puts Philadelphia mid-pack: rain interrupts roughly one run in three, so it pays to check the hourly forecast before a long run, but you will not be running in waterproofs week after week.
The wettest month is July, averaging 120mm across about 14 rainy days. The driest is November, with 77mm over roughly 8 days. Average lows in January drop to -2.7°C, cold enough that gloves, a headband and a thermal base layer make a real difference on early runs. At the other end, July averages 30.8°C highs — hot enough that early morning and evening are the sensible windows, and hydration matters more than waterproofing.
Those are ten-year averages, not a forecast. What actually matters on the day is the next twelve hours — which is what the live verdict and hourly strip at the top of this page are for.
| Month | Rainfall | Rainy days | Avg high | Avg low |
|---|---|---|---|---|
| January | 92mm | 10 | 5.3°C | -2.7°C |
| February | 88mm | 10 | 7.5°C | -2°C |
| March | 110mm | 10 | 11.5°C | 1.2°C |
| April | 107mm | 11 | 17.4°C | 6.7°C |
| May | 107mm | 12 | 22.7°C | 12.4°C |
| June | 107mm | 12 | 27.8°C | 17.5°C |
| July | 120mm | 14 | 30.8°C | 21.2°C |
| August | 114mm | 12 | 29.5°C | 20.3°C |
| September | 104mm | 10 | 26.2°C | 16.9°C |
| October | 98mm | 9 | 19.9°C | 10.8°C |
| November | 77mm | 8 | 13.2°C | 4.1°C |
| December | 109mm | 10 | 8.1°C | 0.4°C |
Historical data: Open-Meteo archive, 2015–2024. A “rainy day” means at least 1mm of precipitation.
Running in Philadelphia: common questions
Will it rain in Philadelphia today?
The forecast card at the top of this page shows Philadelphia's rain probability for the current hour, plus an hour-by-hour breakdown for the rest of the day, using live Open-Meteo data. Historically, Philadelphia sees rain on about 128 days a year, so on any given day there is roughly a 35% chance of some rain falling.
Is it a good day to run in Philadelphia?
RainOrRun scores the live Philadelphia forecast on rain probability, rainfall amount, temperature, wind speed and severe weather, then returns a single verdict: Go, Maybe, or Don't Bother. A Maybe means conditions are borderline and it is worth picking your window rather than skipping the run.
What is the best time to run in Philadelphia today?
The hourly strip above highlights the best single window of the day for Philadelphia — the hour combining the lowest rain probability with the most comfortable temperature. You can also check up to eight days ahead using the date picker if you are planning a long run or a race.
What should I wear running in Philadelphia today?
The gear section on this page updates with the live Philadelphia forecast: a waterproof jacket and peaked cap when rain probability goes above 40%, a thermal base layer and gloves below 8 degrees Celsius, and a high-vis vest when wind or low light make you harder to see.
What is the wettest month in Philadelphia?
July is the wettest month in Philadelphia, averaging 120mm of rain across about 14 rainy days. November is the driest, with around 77mm over roughly 8 days. Figures are ten-year averages covering 2015 to 2024.
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