July is one of the warmer months of the year in Pottstown, with average highs near 30.3°C and lows around 18.9°C (mean 24.6°C). It is a relatively wet time of year, averaging 121 mm of rainfall and 70% relative humidity across the period.
July is one of the warmer months of the year in Pottstown. Across 45 years of records, the warmest July in Pottstown was 1999 — when the month averaged 27.3°C — while the coldest was 1984 at 21.3°C. Typical July days reach 30.3°C with nights near 18.9°C. The long-term trend is warming, about 0.5°C per decade.
July is a relatively wet time of year in Pottstown, averaging 121 mm of rainfall. The wettest July on record was 2004 with 229 mm, while the driest was 1983 at 31 mm.
Relative humidity in Pottstown during July averages 70%. The most humid July was 1984 at 83%, and the least humid was 1999 at 52%.
July receives about 5.8 kWh/m²/day of solar energy in Pottstown. The sunniest Julys were 2010 and 2011 at 6.4 kWh/m²/day, and the cloudiest were 1984, 1989 and 2004 at 5.2.
Average wind speed in Pottstown during July is 0.4 m/s. The windiest Julys were 2018, 2021 and 2022, among others at 0.4 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.8°C | 24.5°C | 23.8°C | 25.2°C | 26.1°C | +2.3°C |
| Avg High | 29.6°C | 30.4°C | 29.4°C | 30.9°C | 31.8°C | +2.2°C |
| Avg Low | 18.0°C | 18.6°C | 18.2°C | 19.7°C | 20.4°C | +2.4°C |
| Avg Rain | 127 mm | 108 mm | 112 mm | 132 mm | 132 mm | +5 mm |
July temperatures in Pottstown have risen by about 2.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 9.4°C (1982) to a record high of 40.4°C (2019).
Rainfall in July is a relatively wet time of year, averaging 121 mm, with a wettest year of 229 mm.
One of the best times to visit Pottstown
July is one of the best times to visit Pottstown. Expect days averaging 30.3°C and nights around 18.9°C (mean 24.6°C) — warmer than Pottstown's yearly average — with higher rainfall (121 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.8°C | 26.2°C | 20.6°C | 38.2°C | 16.0°C | 158 mm | 73% | 0.3 m/s | 5.8 |
| 2024 | 32.3°C | 26.6°C | 21.0°C | 37.1°C | 14.9°C | 89 mm | 69% | 0.3 m/s | 5.7 |
| 2023 | 30.5°C | 25.2°C | 19.9°C | 34.6°C | 17.2°C | 168 mm | 77% | 0.3 m/s | 5.7 |
| 2022 | 32.3°C | 26.3°C | 20.3°C | 37.5°C | 15.4°C | 85 mm | 66% | 0.4 m/s | 6 |
| 2021 | 31.1°C | 25.3°C | 19.6°C | 35.2°C | 13.6°C | 127 mm | 70% | 0.4 m/s | 5.6 |
| 2020 | 32.5°C | 26.7°C | 20.9°C | 36.2°C | 18.5°C | 164 mm | 70% | 0.3 m/s | 6.2 |
| 2019 | 30.3°C | 25.0°C | 19.8°C | 40.4°C | 15.1°C | 165 mm | 78% | 0.3 m/s | 6.3 |
| 2018 | 30.1°C | 24.5°C | 19.0°C | 40.2°C | 13.5°C | 178 mm | 73% | 0.4 m/s | 6.1 |
| 2017 | 30.5°C | 25.0°C | 19.5°C | 35.3°C | 14.1°C | 172 mm | 73% | 0.4 m/s | 5.6 |
| 2016 | 32.1°C | 26.1°C | 20.1°C | 36.1°C | 14.4°C | 145 mm | 67% | 0.4 m/s | 6 |
| 2015 | 29.4°C | 24.0°C | 18.6°C | 34.2°C | 14.0°C | 100 mm | 75% | 0.3 m/s | 6 |
| 2014 | 28.9°C | 23.4°C | 17.9°C | 33.5°C | 12.6°C | 125 mm | 74% | 0.4 m/s | 6.2 |
| 2013 | 29.2°C | 24.8°C | 20.3°C | 36.9°C | 14.2°C | 135 mm | 81% | 0.4 m/s | 5.7 |
| 2012 | 33.0°C | 26.9°C | 20.9°C | 38.9°C | 17.2°C | 82 mm | 62% | 0.4 m/s | 5.9 |
| 2011 | 32.9°C | 26.8°C | 20.6°C | 38.6°C | 14.9°C | 77 mm | 64% | 0.3 m/s | 6.4 |
| 2010 | 32.1°C | 26.0°C | 19.9°C | 40.2°C | 12.9°C | 140 mm | 66% | 0.4 m/s | 6.4 |
| 2009 | 27.6°C | 22.3°C | 16.9°C | 31.5°C | 12.9°C | 117 mm | 74% | 0.4 m/s | 5.8 |
| 2008 | 30.7°C | 25.0°C | 19.4°C | 35.1°C | 15.9°C | 119 mm | 69% | 0.4 m/s | 5.9 |
| 2007 | 29.7°C | 23.9°C | 18.0°C | 35.0°C | 11.0°C | 88 mm | 67% | 0.4 m/s | 6 |
| 2006 | 29.0°C | 24.4°C | 19.7°C | 32.8°C | 14.2°C | 130 mm | 82% | 0.4 m/s | 6 |
| 2005 | 30.6°C | 24.9°C | 19.2°C | 35.8°C | 15.3°C | 148 mm | 73% | 0.4 m/s | 5.8 |
| 2004 🌧️ | 28.3°C | 23.2°C | 18.2°C | 31.8°C | 15.3°C | 229 mm | 79% | 0.4 m/s | 5.2 |
| 2003 | 27.8°C | 23.1°C | 18.4°C | 30.9°C | 15.0°C | 92 mm | 81% | 0.4 m/s | 5.9 |
| 2002 | 32.5°C | 25.9°C | 19.3°C | 37.6°C | 12.8°C | 38 mm | 57% | 0.4 m/s | 6.2 |
| 2001 | 29.7°C | 23.2°C | 16.8°C | 35.2°C | 12.3°C | 58 mm | 61% | 0.4 m/s | 6.3 |
| 2000 | 28.2°C | 22.4°C | 16.5°C | 32.8°C | 12.2°C | 101 mm | 68% | 0.4 m/s | 5.5 |
| 1999 🔥 | 34.2°C | 27.3°C | 20.3°C | 39.3°C | 14.0°C | 33 mm | 52% | 0.4 m/s | 6.1 |
| 1998 | 29.3°C | 23.5°C | 17.7°C | 33.4°C | 13.0°C | 65 mm | 69% | 0.4 m/s | 5.8 |
| 1997 | 31.1°C | 24.3°C | 17.5°C | 37.9°C | 12.7°C | 104 mm | 59% | 0.4 m/s | 6.3 |
| 1996 | 26.8°C | 21.9°C | 17.0°C | 31.9°C | 11.7°C | 181 mm | 81% | 0.4 m/s | 5.3 |
| 1995 | 30.9°C | 25.1°C | 19.3°C | 37.3°C | 12.5°C | 113 mm | 69% | 0.4 m/s | 5.5 |
| 1994 | 29.9°C | 24.8°C | 19.7°C | 34.6°C | 15.5°C | 165 mm | 75% | 0.3 m/s | 5.6 |
| 1993 | 31.4°C | 25.3°C | 19.1°C | 36.5°C | 14.3°C | 89 mm | 64% | 0.4 m/s | 6 |
| 1992 | 29.3°C | 23.8°C | 18.2°C | 34.9°C | 13.7°C | 117 mm | 70% | 0.4 m/s | 5.8 |
| 1991 | 31.3°C | 25.1°C | 18.9°C | 37.2°C | 14.3°C | 120 mm | 64% | 0.4 m/s | 5.7 |
| 1990 | 29.5°C | 23.9°C | 18.2°C | 34.1°C | 13.5°C | 94 mm | 75% | 0.4 m/s | 5.4 |
| 1989 | 27.1°C | 22.5°C | 17.8°C | 31.6°C | 13.3°C | 207 mm | 83% | 0.4 m/s | 5.2 |
| 1988 | 31.9°C | 25.7°C | 19.4°C | 37.9°C | 9.4°C | 179 mm | 65% | 0.4 m/s | 5.6 |
| 1987 | 31.5°C | 25.3°C | 19.2°C | 37.3°C | 12.9°C | 113 mm | 69% | 0.3 m/s | 6.1 |
| 1986 | 31.5°C | 25.1°C | 18.7°C | 36.7°C | 10.8°C | 117 mm | 65% | 0.4 m/s | 5.5 |
| 1985 | 30.1°C | 23.9°C | 17.7°C | 33.7°C | 13.0°C | 153 mm | 66% | 0.4 m/s | 6.1 |
| 1984 ❄️ | 26.0°C | 21.3°C | 16.6°C | 29.6°C | 10.5°C | 171 mm | 83% | 0.4 m/s | 5.2 |
| 1983 | 29.8°C | 23.6°C | 17.4°C | 35.1°C | 11.2°C | 31 mm | 70% | 0.4 m/s | — |
| 1982 | 28.7°C | 23.0°C | 17.2°C | 33.9°C | 9.4°C | 73 mm | 74% | 0.4 m/s | — |
| 1981 | 30.1°C | 23.8°C | 17.6°C | 34.6°C | 12.3°C | 97 mm | 66% | 0.4 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 30.3°C with lows near 18.9°C (mean 24.6°C), based on 45 years of NASA POWER data.
July averages 121 mm of rainfall in Pottstown, a relatively wet time of year. The wettest on record was 229 mm in 2004.
The hottest July reached 40.4°C in 2019. The coldest dipped to 9.4°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.8°C. Daytime highs moved from 28.9°C to 31.6°C and overnight lows from 17.3°C to 20.3°C over the same span.
July is one of the warmer months of the year in Pottstown and a relatively wet time of year, so plan for around 30.3°C daytime highs and 18.9°C at night.
Not quite — July is the 12th coolest month in Pottstown, averaging 24.6°C.
For July in Pottstown, pack light, breathable clothing and sun protection, with typical highs of 30.3°C and lows of 18.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 70% — moderately humid.
Average wind speed in July is 0.4 m/s. The windiest July on record averaged 0.4 m/s (1981).
The wettest July on record was 2004 with 229 mm. On average, July sees 121 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Pottstown behaves each July, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for July specifically, along with year-by-year records and how the month has changed over the decades.
