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Philadelphia, PA Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Philadelphia, PA?
Philadelphia, PA gets 50.7 in of precipitation a year over about 118 rainy days, and about 16.1 in of snow a season. July is the warmest month (average high 89°F) and January the coldest (average low 28°F).
Humid subtropical climate
Philadelphia, PA has hot summers and chilly winters. Daytime highs range from about 41°F in January to 89°F in July. August is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 72°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 31° | 44° |
| Spring | Mar–May | 47° | 65° |
| Summer | Jun–Aug | 69° | 87° |
| Autumn | Sep–Nov | 52° | 68° |
How much rain does Philadelphia get?
Philadelphia gets 50.7 in of precipitation in an average year, spread over about 118 days with measurable rain. That is more rainy days than 76% of the US.
August is the wettest month, with 5.0 in. February is the driest, with 3.3 in. May has the most rainy days, about 12.
The longest dry spell in the last five years lasted 41 days, to November 10, 2024.
From September 2025 to August 2026 Philadelphia got 47.4 in of rain, against a normal of 50.7 in for those months. February 2026 had the most, with 8.9 in.
See where Philadelphia ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Pennsylvania.
Does it snow in Philadelphia?
Yes. Philadelphia gets about 16.1 in of snow in an average season, measured at the reporting station.
The snowiest winter on record is 2009–10, with 78.7 in.
The most recent measurable snow at the station fell on February 25, 2026.
From September 2025 to August 2026 the station measured 30.1 in of snow, against a normal of 16.1 in for those months. February 2026 had the most, with 14.4 in.
See where Philadelphia ranks: snowiest cities in the US.
Philadelphia weather by month
Philadelphia weather in January
In January, Philadelphia averages a high of 41°F and a low of 28°F. It gets 3.6 in of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The January record high is 73°F (2002) and the record low is -5°F (1994).
Philadelphia weather in February
In February, Philadelphia averages a high of 45°F and a low of 30°F. It gets 3.3 in of precipitation over about 9 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The February record high is 78°F (2018) and the record low is 1°F (2015).
Philadelphia weather in March
In March, Philadelphia averages a high of 53°F and a low of 37°F. It gets 4.5 in of precipitation over about 10 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The March record high is 90°F (1998) and the record low is 10°F (2014).
Philadelphia weather in April
In April, Philadelphia averages a high of 66°F and a low of 47°F. It gets 4.0 in of precipitation over about 12 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The April record high is 98°F (2002) and the record low is 25°F (1995). April is one of the most comfortable months to visit.
Philadelphia weather in May
In May, Philadelphia averages a high of 75°F and a low of 57°F. It gets 4.1 in of precipitation over about 12 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The May record high is 98°F (2026) and the record low is 40°F (1996). May is one of the most comfortable months to visit.
Philadelphia weather in June
In June, Philadelphia averages a high of 84°F and a low of 67°F. It gets 4.8 in of precipitation over about 11 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The June record high is 103°F (2025) and the record low is 50°F (2021).
Philadelphia weather in July
In July, Philadelphia averages a high of 89°F and a low of 72°F. It gets 4.8 in of precipitation over about 10 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The July record high is 104°F (2026) and the record low is 57°F (2001).
Philadelphia weather in August
In August, Philadelphia averages a high of 87°F and a low of 70°F. It gets 5.0 in of precipitation over about 9 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The August record high is 103°F (2005) and the record low is 53°F (1994).
Philadelphia weather in September
In September, Philadelphia averages a high of 80°F and a low of 63°F. It gets 4.9 in of precipitation over about 8 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The September record high is 99°F (2023) and the record low is 44°F (1993). September is one of the most comfortable months to visit.
Philadelphia weather in October
In October, Philadelphia averages a high of 68°F and a low of 52°F. It gets 4.2 in of precipitation over about 9 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The October record high is 95°F (2019) and the record low is 31°F (2008). October is one of the most comfortable months to visit.
Philadelphia weather in November
In November, Philadelphia averages a high of 56°F and a low of 42°F. It gets 3.4 in of precipitation over about 9 rainy days. Estimated sunshine is 57% of daylight hours, derived from ERA5 cloud cover. The November record high is 83°F (2024) and the record low is 20°F (2018).
Philadelphia weather in December
In December, Philadelphia averages a high of 46°F and a low of 34°F. It gets 4.3 in of precipitation over about 10 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The December record high is 73°F (1998) and the record low is 6°F (2022).
Sunshine, humidity and wind in Philadelphia
November is the sunniest month in Philadelphia, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. May is the cloudiest, at 37%. The annual cloud-cover estimate is 44% of daylight hours; it is not a measurement of sunshine duration. Philadelphia is cloudier than 66% of the US.
Humidity peaks in August at 68% and is lowest in March at 54%.
Philadelphia has about 39 days a year above 90°F. Philadelphia is hotter than 60% of the US.
See where Philadelphia ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
First and last freeze in Philadelphia
The first fall freeze in Philadelphia typically comes around November 21, and the last spring freeze around March 29. That leaves a frost-free growing season of about 237 days.
Philadelphia weather records
These records cover PHILA FRANKLIN INST during 1993–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Philadelphia station is 104°F, on July 5, 1999. The coldest is -5°F, on January 19, 1994.
The wettest day in the available station history brought 7.5 in of precipitation, on September 28, 2004.
36 all-time records have been set at the station since 1993.
The annual mean temperature has changed by +0.6°F per decade since 1994.
The best time to visit Philadelphia
The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 72°F.
Winter (December–February) is chilly, with average highs around 44°F and lows near 31°F. Snow is possible.
Spring (March–May) is mild, with average highs around 65°F and lows near 47°F.
Summer (June–August) is hot, with average highs around 87°F and lows near 69°F.
Autumn (September–November) is mild, with average highs around 68°F and lows near 52°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 28° | 41° | 3.6 in | 11 | 63% | 40% | 73° | -5° |
| February | 30° | 45° | 3.3 in | 9 | 60% | 41% | 78° | 1° |
| March | 37° | 53° | 4.5 in | 10 | 54% | 43% | 90° | 10° |
| April | 47° | 66° | 4.0 in | 12 | 54% | 41% | 98° | 25° |
| May | 57° | 75° | 4.1 in | 12 | 58% | 37% | 98° | 40° |
| June | 67° | 84° | 4.8 in | 11 | 60% | 44% | 103° | 50° |
| July | 72° | 89° | 4.8 in | 10 | 67% | 43% | 104° | 57° |
| August | 70° | 87° | 5.0 in | 9 | 68% | 43% | 103° | 53° |
| September | 63° | 80° | 4.9 in | 8 | 68% | 48% | 99° | 44° |
| October | 52° | 68° | 4.2 in | 9 | 67% | 51% | 95° | 31° |
| November | 42° | 56° | 3.4 in | 9 | 61% | 57% | 83° | 20° |
| December | 34° | 46° | 4.3 in | 10 | 65% | 42% | 73° | 6° |
Station: PHILA FRANKLIN INST, 1 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1993–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Philadelphia climate questions
How much rain does Philadelphia get?
Philadelphia gets 50.7 in of precipitation in an average year, over about 118 rainy days.
What is the wettest month in Philadelphia?
August is the wettest month in Philadelphia, with 5.0 in. February is the driest, with 3.3 in.
How many rainy days does Philadelphia have a year?
Philadelphia has about 118 days with measurable rain in an average year. May has the most, about 12.
Does it snow in Philadelphia?
Yes. Philadelphia gets about 16.1 in of snow in an average season. The snowiest winter on record is 2009–10, with 78.7 in.
What is the hottest month in Philadelphia?
July is the warmest month in Philadelphia, with an average high of 89°F.
What is the coldest month in Philadelphia?
January is the coldest month in Philadelphia, with an average low of 28°F.
What is the record high temperature in Philadelphia?
Within the available 1993–2026 station history, the record high at the Philadelphia station is 104°F, set on July 5, 1999. The record low is -5°F, on January 19, 1994.
What is the sunniest month in Philadelphia?
November is the sunniest month in Philadelphia, with estimated sunshine of 57% of daylight hours from ERA5 cloud cover. May is the cloudiest.
When is the first frost in Philadelphia?
The first fall freeze in Philadelphia typically comes around November 21. The last spring freeze is around March 29.
What is the best time to visit Philadelphia?
The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 72°F.