Philadelphia, PA weather in July
July in Philadelphia: hot and often humid, with frequent rain. Highs 88°F, lows 70°F, rain on about 10 days. This is the peak of the warm season in Philadelphia.
- Normal high
- 88°F
- Normal low
- 70°F
- Wet days
- 10
- 4.4 in total
- Muggy days
- 17
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 87°F | 87°F |
| Normal low | 68°F | 70°F |
| Chance of a wet day | 33% | 32% |
| Sunrise / sunset | 5:35 am / 8:33 pm | 5:58 am / 8:15 pm |
| Daylight | 15.0 h | 14.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical July day
- 6 am73°Fdew point 66°F
- 9 am79°Fdew point 65°F
- Noon84°Fdew point 64°F
- 3 pm86°Fdew point 63°F
- 6 pm83°Fdew point 64°F
- 9 pm78°Fdew point 65°F
NOAA hourly normals (local standard time) from Philadelphia Intl Airport (7 mi away); average wind 8 mph; clear or few clouds in 61% of daytime hours, mostly cloudy or overcast in 28%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
- Hot dayshigh 90°F or more13 of 31
- Muggy daysdaily mean dew point 65°F or more17 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 4.4 in; a dry July brings about 2.5 in and a wet one about 5.5 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20202011: average high 92°F
- Coolest July2000: average high 82°F
- Wettest July2013: 13.2 in
- Driest July1999: 1.2 in
- Highest reading103°F (July 22, 2011)
- Lowest reading55°F (July 12, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 83°F | 88°F | 86°F |
| Normal low | 64°F | 70°F | 68°F |
| Wet days | 10 | 10 | 9 |
| Comfortable days | 7 | 1 | 3 |
| Daylight | 15.0 h | 14.7 h | 13.7 h |
Highs change by +5°F from June and -2°F into August.
Nearby alternatives in July
- Cooler: Montauk, NY184 mi · high 80°F · 9 wet days
How Philadelphia ranks in July
- Normal high181st warmest of 378 cities; 1st of 4 in Pennsylvania
- Wet days232nd driest of 378
- Comfortable days175th most of 340
What to pack for Philadelphia in July
- Light, breathable clothing – highs near 88°F and about 17 muggy days
- A rain jacket or umbrella – rain on about 10 days
- Sunglasses and sunscreen – about 14.7 hours of daylight and highs near 88°F
Heating and cooling
July has 0 heating degree days and 425 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Philadelphia in July?
The normal high is 88°F and the normal low is 70°F. From 1991 to 2020 the hottest July reading was 103°F (most recently on July 22, 2011).
Does it rain a lot in Philadelphia in July?
About 10 days in July have at least 0.01 in of precipitation, and the normal total is 4.4 in. The wettest July in 1991-2020 was in 2013 (13.2 in); the driest was in 1999 (1.2 in).
Is July a good time to visit Philadelphia?
July ranks 9th of 12 months on our comfort score for Philadelphia (48 out of 100). It has about 1 comfortable day and about 13 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and humidity and wind by hour: Philadelphia Intl Airport (USW00013739), 6.8 mi SSW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Phila Franklin Inst (USC00366886), 0.6 mi NW of the city center, 60 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Philadelphia Ne Airport (USW00094732), 12 mi NE of the city center, 100 ft (65 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Philadelphia International Airport (724080-13739), 6.4 mi SSW of the city center, 7 ft . Hourly observations, 1991-2020.