Historical Weather in Philadelphia, PA
See 55+ years of weather history for any date in Philadelphia going back to 1970.
Part of Pennsylvania weather history · Pennsylvania temperature records
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Monthly Climate Averages
Historical temperature and precipitation averages for Philadelphia, PA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Philadelphia, PA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Philadelphia, PA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Philadelphia, PA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Growing Season & Frost in Philadelphia, PA
Based on the dates the average overnight low reaches freezing (32°F / 0°C), from 50+ years of NOAA station data.
Philadelphia, PA also averages 4 days a year at or above 90°F.
Hours of Daylight in Philadelphia, PA
Day length across the year at 40.0°N latitude. Computed from solar geometry.
Best Time to Visit Philadelphia, PA
Most pleasant months in Philadelphia, PA: April, May, September, October.
What to expect on any date in Philadelphia
Forecasts run out after about two weeks. For any date beyond that, see the range Philadelphia actually delivers — typical high and low, how often it stays dry, and how the date has shifted since the 1970s.
Philadelphia Temperature Records
- Record High: The hottest temperature ever recorded in Philadelphia, PA is 108°F, set on July 16, 1995.
- Record Low: The coldest temperature ever recorded in Philadelphia, PA is -11°F, set on January 20, 1985.
- Data Coverage: Based on 33 years of data from NOAA weather station: PHILA FRANKLIN INST.
All-Time Record High
All-Time Record Low
Monthly Temperature Records in Philadelphia
| Month | Record High | Record Low |
|---|---|---|
| January | 74°F(1995) | -11°F(1985) |
| February | 79°F(2018) | -4°F(1979) |
| March | 94°F(1998) | -1°F(1984) |
| April | 98°F(2002) | 8°F(1995) |
| May | 100°F(1996) | 29°F(1978) |
| June | 103°F(2025) | 34°F(1984) |
| July | 108°F(1995) | 45°F(1982) |
| August | 103°F(2001) | 37°F(1987) |
| September | 99°F(2023) | 30°F(1991) |
| October | 97°F(2019) | 20°F(1988) |
| November | 88°F(1990) | 11°F(1989) |
| December | 77°F(1991) | -10°F(1980) |