Allentown, PA weather in July
In July, Allentown sees highs around 86°F and lows around 65°F: warm and often humid, with frequent rain. Rain falls on about 11 days. It is one of the warmest months in Allentown.
- Normal high
- 86°F
- Normal low
- 65°F
- Wet days
- 11
- 5.3 in total
- Muggy days
- 14
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 86°F | 86°F |
| Normal low | 64°F | 65°F |
| Chance of a wet day | 36% | 35% |
| Sunrise / sunset | 5:34 am / 8:36 pm | 5:58 am / 8:18 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 am67°Fdew point 63°F
- 9 am76°Fdew point 64°F
- Noon82°Fdew point 63°F
- 3 pm84°Fdew point 63°F
- 6 pm81°Fdew point 63°F
- 9 pm74°Fdew point 64°F
NOAA hourly normals (local standard time) from Allentown Intl Airport (4 mi away); average wind 6 mph; clear or few clouds in 57% of daytime hours, mostly cloudy or overcast in 29%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F3 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more14 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in8 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 5.3 in; a dry July brings about 4.2 in and a wet one about 6.6 in (25th and 75th percentiles). About 4 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20201999: average high 91°F
- Coolest July2000: average high 80°F
- Wettest July2019: 9.6 in
- Driest July1999: 0.3 in
- Highest reading104°F (July 22, 2011)
- Lowest reading46°F (July 3, 2001)
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 | 82°F | 86°F | 84°F |
| Normal low | 60°F | 65°F | 63°F |
| Wet days | 11 | 11 | 10 |
| Comfortable days | 9 | 3 | 5 |
| Daylight | 15.0 h | 14.7 h | 13.7 h |
Highs change by +4°F from June and -2°F into August.
Nearby alternatives in July
- Cooler: Montauk, NY187 mi · high 80°F · 9 wet days
How Allentown ranks in July
- Normal high205th warmest of 378 cities; 2nd of 4 in Pennsylvania
- Wet days281st driest of 378
- Comfortable days151st most of 340
What to pack for Allentown in July
- Light, breathable clothing – highs near 86°F and about 14 muggy days
- A rain jacket or umbrella – rain on about 11 days
- Sunglasses and sunscreen – about 14.7 hours of daylight and highs near 86°F
Heating and cooling
July has 1 heating degree days and 328 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Allentown in July?
The normal high is 86°F and the normal low is 65°F. From 1991 to 2020 the hottest July reading was 104°F (July 22, 2011).
Does it rain a lot in Allentown in July?
About 11 days in July have at least 0.01 in of precipitation, and the normal total is 5.3 in. The wettest July in 1991-2020 was in 2019 (9.6 in); the driest was in 1999 (0.3 in).
Is July a good time to visit Allentown?
July ranks 7th of 12 months on our comfort score for Allentown (52 out of 100). It has about 3 comfortable days and about 8 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Allentown Intl Airport (USW00014737), 3.6 mi NE of the city center, 390 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lehigh Valley International Airport (725170-14737), 3.6 mi NE of the city center, 385 ft . Hourly observations, 1991-2020.