June is one of the warmer months of the year in Pottstown, with average highs near 27°C and lows around 15.6°C (mean 21.3°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 75% relative humidity across the period.
June is one of the warmer months of the year in Pottstown. Across 45 years of records, the warmest June in Pottstown was 2010 — when the month averaged 23.8°C — while the coldest was 1982 at 18.7°C. Typical June days reach 27°C with nights near 15.6°C. The long-term trend is warming, about 0.4°C per decade.
June is a relatively wet time of year in Pottstown, averaging 109 mm of rainfall. The wettest June on record was 2006 with 264 mm, while the driest was 1988 at 22 mm.
Relative humidity in Pottstown during June averages 75%. The most humid June was 1989 at 84%, and the least humid was 1999 at 63%.
June receives about 5.9 kWh/m²/day of solar energy in Pottstown. The sunniest June was 1988 at 7.1 kWh/m²/day, and the cloudiest was 2003 at 4.8.
Average wind speed in Pottstown during June is 0.4 m/s. The windiest Junes were 2023, 2024 and 2025, among others at 0.4 m/s, while the calmest was 1983 at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.5°C | 20.9°C | 21.5°C | 21.8°C | 22.1°C | +1.6°C |
| Avg High | 26.2°C | 26.9°C | 27.0°C | 27.2°C | 28.0°C | +1.8°C |
| Avg Low | 14.7°C | 15.0°C | 16.0°C | 16.3°C | 16.2°C | +1.5°C |
| Avg Rain | 101 mm | 81 mm | 131 mm | 123 mm | 103 mm | +3 mm |
June temperatures in Pottstown have risen by about 2.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 4.9°C (1986) to a record high of 38.2°C (2025).
Rainfall in June is a relatively wet time of year, averaging 109 mm, with a wettest year of 264 mm.
One of the best times to visit Pottstown
June is one of the best times to visit Pottstown. Expect days averaging 27°C and nights around 15.6°C (mean 21.3°C) — warmer than Pottstown's yearly average — with higher rainfall (109 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 | 28.9°C | 23.0°C | 17.1°C | 38.2°C | 7.3°C | 85 mm | 76% | 0.4 m/s | 5.4 |
| 2024 | 29.6°C | 23.4°C | 17.3°C | 37.2°C | 11.0°C | 123 mm | 70% | 0.4 m/s | 6.4 |
| 2023 | 26.8°C | 20.6°C | 14.4°C | 34.6°C | 10.0°C | 142 mm | 70% | 0.4 m/s | 5.4 |
| 2022 | 27.2°C | 21.3°C | 15.5°C | 32.5°C | 10.1°C | 103 mm | 71% | 0.4 m/s | 6.2 |
| 2021 | 27.9°C | 22.3°C | 16.7°C | 36.3°C | 10.0°C | 90 mm | 77% | 0.4 m/s | 5.9 |
| 2020 | 27.5°C | 21.8°C | 16.1°C | 32.4°C | 6.8°C | 77 mm | 74% | 0.4 m/s | 6.5 |
| 2019 | 26.2°C | 21.2°C | 16.1°C | 32.5°C | 7.4°C | 182 mm | 79% | 0.4 m/s | 6.1 |
| 2018 | 26.3°C | 21.0°C | 15.8°C | 35.2°C | 9.5°C | 106 mm | 80% | 0.4 m/s | 6 |
| 2017 | 27.8°C | 21.9°C | 15.9°C | 35.0°C | 9.4°C | 92 mm | 70% | 0.4 m/s | 6.1 |
| 2016 | 27.2°C | 21.4°C | 15.6°C | 32.2°C | 8.5°C | 67 mm | 72% | 0.4 m/s | 6.5 |
| 2015 | 26.6°C | 21.8°C | 17.0°C | 30.8°C | 10.7°C | 222 mm | 82% | 0.4 m/s | 5.2 |
| 2014 | 26.3°C | 21.2°C | 16.1°C | 30.6°C | 9.9°C | 98 mm | 80% | 0.4 m/s | 6.2 |
| 2013 | 26.7°C | 21.5°C | 16.4°C | 31.1°C | 9.4°C | 243 mm | 81% | 0.4 m/s | 5.8 |
| 2012 | 27.9°C | 21.7°C | 15.6°C | 36.4°C | 9.6°C | 90 mm | 68% | 0.4 m/s | 6.1 |
| 2011 | 27.6°C | 22.1°C | 16.7°C | 31.2°C | 9.6°C | 71 mm | 77% | 0.4 m/s | 5.8 |
| 2010 🔥 | 29.7°C | 23.8°C | 17.9°C | 34.5°C | 11.4°C | 59 mm | 69% | 0.4 m/s | 6 |
| 2009 | 25.0°C | 20.3°C | 15.7°C | 28.6°C | 7.3°C | 152 mm | 83% | 0.4 m/s | 4.9 |
| 2008 | 28.4°C | 22.8°C | 17.2°C | 35.7°C | 11.0°C | 70 mm | 76% | 0.4 m/s | 6.3 |
| 2007 | 27.0°C | 21.4°C | 15.8°C | 33.8°C | 10.4°C | 106 mm | 76% | 0.4 m/s | 6.1 |
| 2006 🌧️ | 26.5°C | 21.3°C | 16.2°C | 34.0°C | 8.4°C | 264 mm | 76% | 0.4 m/s | 5.4 |
| 2005 | 28.4°C | 22.6°C | 16.8°C | 34.8°C | 9.9°C | 65 mm | 76% | 0.4 m/s | 5.9 |
| 2004 | 25.8°C | 20.5°C | 15.2°C | 31.8°C | 9.3°C | 115 mm | 79% | 0.4 m/s | 5.8 |
| 2003 | 24.9°C | 19.9°C | 14.8°C | 33.9°C | 7.4°C | 204 mm | 83% | 0.4 m/s | 4.8 |
| 2002 | 28.6°C | 22.3°C | 15.9°C | 35.5°C | 10.4°C | 103 mm | 69% | 0.4 m/s | 5.9 |
| 2001 | 28.3°C | 22.2°C | 16.1°C | 33.5°C | 7.0°C | 120 mm | 71% | 0.4 m/s | 6.2 |
| 2000 | 27.0°C | 21.4°C | 15.8°C | 31.9°C | 9.3°C | 115 mm | 78% | 0.4 m/s | 5.1 |
| 1999 | 29.1°C | 22.3°C | 15.6°C | 35.5°C | 10.7°C | 47 mm | 63% | 0.4 m/s | 6 |
| 1998 | 24.9°C | 20.1°C | 15.2°C | 30.6°C | 7.8°C | 125 mm | 80% | 0.4 m/s | 5.3 |
| 1997 | 27.1°C | 20.9°C | 14.6°C | 35.2°C | 8.8°C | 61 mm | 70% | 0.4 m/s | 6 |
| 1996 | 26.0°C | 20.6°C | 15.2°C | 32.6°C | 7.3°C | 148 mm | 82% | 0.4 m/s | 5.6 |
| 1995 | 27.7°C | 21.4°C | 15.1°C | 34.5°C | 10.8°C | 62 mm | 70% | 0.4 m/s | 5.5 |
| 1994 | 28.1°C | 22.2°C | 16.2°C | 34.6°C | 7.7°C | 82 mm | 75% | 0.4 m/s | 5.7 |
| 1993 | 26.2°C | 20.4°C | 14.5°C | 30.9°C | 5.7°C | 60 mm | 75% | 0.4 m/s | 6.4 |
| 1992 | 25.0°C | 19.0°C | 13.1°C | 30.0°C | 7.1°C | 83 mm | 74% | 0.4 m/s | 6.5 |
| 1991 | 28.8°C | 22.2°C | 15.6°C | 36.0°C | 9.3°C | 61 mm | 65% | 0.4 m/s | 6.2 |
| 1990 | 25.6°C | 20.1°C | 14.7°C | 30.1°C | 7.3°C | 86 mm | 78% | 0.4 m/s | 5.7 |
| 1989 | 25.7°C | 21.2°C | 16.7°C | 30.1°C | 9.7°C | 168 mm | 84% | 0.4 m/s | 5 |
| 1988 | 26.7°C | 20.3°C | 13.8°C | 35.8°C | 6.2°C | 22 mm | 65% | 0.4 m/s | 7.1 |
| 1987 | 27.5°C | 21.6°C | 15.7°C | 32.4°C | 7.6°C | 73 mm | 75% | 0.4 m/s | 6 |
| 1986 | 27.7°C | 21.0°C | 14.3°C | 33.2°C | 4.9°C | 54 mm | 64% | 0.4 m/s | 6.5 |
| 1985 | 26.0°C | 19.8°C | 13.7°C | 30.7°C | 10.3°C | 72 mm | 68% | 0.4 m/s | 5.7 |
| 1984 | 25.8°C | 20.5°C | 15.3°C | 31.7°C | 6.6°C | 135 mm | 82% | 0.4 m/s | 5.6 |
| 1983 | 25.6°C | 19.8°C | 14.0°C | 31.0°C | 7.7°C | 98 mm | 80% | 0.3 m/s | — |
| 1982 ❄️ | 23.8°C | 18.7°C | 13.5°C | 28.7°C | 8.9°C | 167 mm | 81% | 0.4 m/s | — |
| 1981 | 27.4°C | 21.4°C | 15.4°C | 33.9°C | 10.2°C | 115 mm | 72% | 0.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27°C with lows near 15.6°C (mean 21.3°C), based on 45 years of NASA POWER data.
June averages 109 mm of rainfall in Pottstown, a relatively wet time of year. The wettest on record was 264 mm in 2006.
The hottest June reached 38.2°C in 2025. The coldest dipped to 4.9°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.1°C. Daytime highs moved from 25.7°C to 28.1°C and overnight lows from 14.4°C to 16.2°C over the same span.
June is one of the warmer months of the year in Pottstown and a relatively wet time of year, so plan for around 27°C daytime highs and 15.6°C at night.
Not quite — June is the 10th coolest month in Pottstown, averaging 21.3°C.
For June in Pottstown, pack light layers you can adjust through the day, with typical highs of 27°C and lows of 15.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 75% — moderately humid.
Average wind speed in June is 0.4 m/s. The windiest June on record averaged 0.4 m/s (1981).
The wettest June on record was 2006 with 264 mm. On average, June sees 109 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
