Philadelphia, Pennsylvania, United States climate

Average temperatures, precipitation and all-time records for Philadelphia, Pennsylvania, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 86°F, and its coldest is January, with an average low of 22°F.

Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania and the sixth-most populous city in the United States. Its population was 1.60 million at the 2020 census and estimated at 1.57 million in 2025. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Philadelphia, Pennsylvania, United States's own ±7-day seasonal distribution.

High 90°F High · 76th pct

Low 71°F Above Normal · 74th pct

Feels-like 96°F Normal · 46th pct

Humidity 19.9 g/m³ High · 84th pct

Wind 18 mph Near Record · 99th pct

Precip 0.38 in Heavy · 83rd pct

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Philadelphia average temperatures by month

Typical daily high and low, and average precipitation, for each month in Philadelphia, Pennsylvania, United States, based on 1981–2026 records. The wettest month is July (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	37°F	22°F	0.10 in
February	41°F	24°F	0.10 in
March	50°F	30°F	0.10 in
April	62°F	40°F	0.10 in
May	70°F	49°F	0.10 in
June	80°F	60°F	0.10 in
July	86°F	67°F	0.20 in
August	85°F	65°F	0.20 in
September	79°F	58°F	0.10 in
October	67°F	46°F	0.10 in
November	54°F	35°F	0.10 in
December	43°F	27°F	0.10 in

Jan 8°–50°

Feb 12°–55°

Mar 22°–64°

Apr 31°–74°

May 41°–80°

Jun 53°–87°

Jul 60°–93°

Aug 58°–92°

Sep 49°–87°

Oct 36°–77°

Nov 25°–66°

Dec 18°–55°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 103°F on 1999-07-05
Coldest day on record: -16°F on 1994-01-21

All Philadelphia weather records →

Percentiles compare each day to Philadelphia, Pennsylvania, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →