June is one of the warmer months of the year in Chambersburg, with average highs near 26.5°C and lows around 14.8°C (mean 20.7°C). It is about average for rainfall, averaging 98 mm of rainfall and 74% relative humidity across the period.
June is one of the warmer months of the year in Chambersburg. Across 45 years of records, the warmest June in Chambersburg was 2010 — when the month averaged 22.5°C — while the coldest was 1982 at 18.1°C. Typical June days reach 26.5°C with nights near 14.8°C. The long-term trend is warming, about 0.4°C per decade.
June is about average for rainfall in Chambersburg, averaging 98 mm of rainfall. The wettest June on record was 2015 with 210 mm, while the driest was 1991 at 25 mm.
Relative humidity in Chambersburg during June averages 74%. The most humid June was 1989 at 84%, and the least humid was 1988 at 61%.
June receives about 6 kWh/m²/day of solar energy in Chambersburg. The sunniest Junes were 1986, 1988 and 2024 at 6.8 kWh/m²/day, and the cloudiest were 1995 and 2003 at 5.1.
Average wind speed in Chambersburg during June is 0.9 m/s. The windiest Junes were 1990, 1998 and 2000, among others at 1 m/s, while the calmest was 1983 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.9°C | 20.5°C | 20.8°C | 20.9°C | 21.6°C | +1.7°C |
| Avg High | 25.9°C | 26.5°C | 26.6°C | 26.5°C | 27.6°C | +1.7°C |
| Avg Low | 14.0°C | 14.4°C | 15.0°C | 15.4°C | 15.5°C | +1.5°C |
| Avg Rain | 99 mm | 85 mm | 113 mm | 105 mm | 83 mm | -16 mm |
June temperatures in Chambersburg have risen by about 2.2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 4.1°C (1986) to a record high of 36.8°C (2024).
Rainfall in June is about average for rainfall, averaging 98 mm, with a wettest year of 210 mm.
One of the best times to visit Chambersburg
June is one of the best times to visit Chambersburg. Expect days averaging 26.5°C and nights around 14.8°C (mean 20.7°C) — warmer than Chambersburg's yearly average — with higher rainfall (98 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 | 27.7°C | 22.3°C | 16.8°C | 35.2°C | 4.7°C | 122 mm | 80% | 0.8 m/s | 5.9 |
| 2024 | 28.6°C | 22.4°C | 16.1°C | 36.8°C | 8.8°C | 79 mm | 70% | 0.9 m/s | 6.8 |
| 2023 | 26.9°C | 20.2°C | 13.5°C | 33.9°C | 8.7°C | 68 mm | 62% | 0.9 m/s | 5.7 |
| 2022 | 27.7°C | 21.4°C | 15.0°C | 33.1°C | 9.3°C | 80 mm | 68% | 0.9 m/s | 6.3 |
| 2021 | 28.1°C | 22.2°C | 16.2°C | 35.8°C | 8.0°C | 75 mm | 71% | 0.9 m/s | 6.1 |
| 2020 | 26.9°C | 21.0°C | 15.2°C | 31.4°C | 5.2°C | 75 mm | 73% | 0.9 m/s | 6.4 |
| 2019 | 25.4°C | 20.1°C | 14.7°C | 34.4°C | 5.2°C | 100 mm | 80% | 0.9 m/s | 6.2 |
| 2018 | 25.2°C | 20.2°C | 15.1°C | 33.3°C | 9.3°C | 146 mm | 81% | 0.9 m/s | 5.6 |
| 2017 | 27.2°C | 21.3°C | 15.4°C | 34.2°C | 9.1°C | 72 mm | 70% | 0.9 m/s | 6.5 |
| 2016 | 27.3°C | 21.2°C | 15.1°C | 32.1°C | 6.7°C | 89 mm | 70% | 0.9 m/s | 6.5 |
| 2015 🌧️ | 26.6°C | 21.3°C | 16.1°C | 33.1°C | 10.0°C | 210 mm | 79% | 0.9 m/s | 5.3 |
| 2014 | 25.5°C | 20.3°C | 15.0°C | 29.1°C | 9.6°C | 119 mm | 81% | 0.8 m/s | 6.4 |
| 2013 | 26.7°C | 21.1°C | 15.6°C | 32.5°C | 8.4°C | 126 mm | 76% | 0.9 m/s | 5.7 |
| 2012 | 26.4°C | 20.5°C | 14.5°C | 35.0°C | 9.9°C | 80 mm | 71% | 0.9 m/s | 6.6 |
| 2011 | 26.2°C | 20.9°C | 15.5°C | 29.8°C | 8.7°C | 47 mm | 79% | 0.8 m/s | 6.1 |
| 2010 🔥 | 28.5°C | 22.5°C | 16.6°C | 35.1°C | 9.2°C | 63 mm | 72% | 0.9 m/s | 6.2 |
| 2009 | 24.7°C | 19.8°C | 14.8°C | 31.8°C | 6.6°C | 128 mm | 81% | 0.8 m/s | 5.7 |
| 2008 | 26.7°C | 21.2°C | 15.7°C | 31.3°C | 8.7°C | 76 mm | 80% | 0.8 m/s | 6.5 |
| 2007 | 28.3°C | 21.7°C | 15.1°C | 34.3°C | 9.9°C | 85 mm | 66% | 0.8 m/s | 6.3 |
| 2006 | 26.6°C | 20.9°C | 15.1°C | 34.5°C | 6.0°C | 200 mm | 71% | 0.8 m/s | 6 |
| 2005 | 28.4°C | 22.3°C | 16.3°C | 34.2°C | 10.1°C | 67 mm | 72% | 0.8 m/s | 6.2 |
| 2004 | 24.5°C | 19.3°C | 14.1°C | 30.0°C | 8.5°C | 121 mm | 80% | 0.8 m/s | 5.8 |
| 2003 | 23.5°C | 18.5°C | 13.5°C | 31.2°C | 4.9°C | 161 mm | 83% | 0.9 m/s | 5.1 |
| 2002 | 28.0°C | 21.7°C | 15.4°C | 34.7°C | 9.9°C | 76 mm | 68% | 0.8 m/s | 6.3 |
| 2001 | 28.4°C | 21.8°C | 15.2°C | 34.2°C | 6.9°C | 104 mm | 66% | 0.8 m/s | 6.3 |
| 2000 | 27.0°C | 21.1°C | 15.2°C | 31.8°C | 7.8°C | 115 mm | 75% | 1 m/s | 5.2 |
| 1999 | 28.1°C | 21.3°C | 14.5°C | 34.8°C | 8.4°C | 55 mm | 61% | 0.9 m/s | 5.9 |
| 1998 | 24.2°C | 19.3°C | 14.3°C | 29.9°C | 5.0°C | 116 mm | 81% | 1 m/s | 5.2 |
| 1997 | 26.2°C | 20.2°C | 14.2°C | 34.2°C | 7.5°C | 68 mm | 70% | 0.9 m/s | 6 |
| 1996 | 25.8°C | 20.5°C | 15.2°C | 31.4°C | 7.3°C | 173 mm | 82% | 0.9 m/s | 6 |
| 1995 | 26.6°C | 20.8°C | 15.0°C | 34.0°C | 9.9°C | 146 mm | 75% | 0.9 m/s | 5.1 |
| 1994 | 28.1°C | 21.8°C | 15.6°C | 34.7°C | 6.2°C | 71 mm | 72% | 0.9 m/s | 6.1 |
| 1993 | 25.6°C | 19.5°C | 13.4°C | 30.4°C | 4.1°C | 67 mm | 74% | 0.8 m/s | 6.3 |
| 1992 | 24.9°C | 18.8°C | 12.7°C | 30.3°C | 7.4°C | 71 mm | 72% | 0.9 m/s | 6.1 |
| 1991 | 28.7°C | 22.1°C | 15.4°C | 35.3°C | 8.9°C | 25 mm | 62% | 0.8 m/s | 6 |
| 1990 | 26.4°C | 20.2°C | 14.0°C | 33.3°C | 4.9°C | 54 mm | 72% | 1 m/s | 6 |
| 1989 | 24.5°C | 20.0°C | 15.5°C | 28.8°C | 9.3°C | 147 mm | 84% | 0.9 m/s | 5.6 |
| 1988 | 26.9°C | 19.9°C | 12.8°C | 36.0°C | 5.2°C | 31 mm | 61% | 1 m/s | 6.8 |
| 1987 | 27.6°C | 21.5°C | 15.4°C | 32.0°C | 7.6°C | 81 mm | 73% | 0.9 m/s | 6.1 |
| 1986 | 27.3°C | 20.6°C | 13.8°C | 32.3°C | 4.1°C | 67 mm | 66% | 0.9 m/s | 6.8 |
| 1985 | 25.1°C | 18.8°C | 12.5°C | 30.2°C | 8.3°C | 60 mm | 71% | 1 m/s | 5.8 |
| 1984 | 25.7°C | 20.0°C | 14.4°C | 30.2°C | 6.4°C | 118 mm | 80% | 0.8 m/s | 5.6 |
| 1983 | 25.0°C | 19.5°C | 13.9°C | 30.1°C | 6.5°C | 116 mm | 79% | 0.7 m/s | — |
| 1982 ❄️ | 23.4°C | 18.1°C | 12.8°C | 29.5°C | 8.6°C | 155 mm | 80% | 0.9 m/s | — |
| 1981 | 27.2°C | 21.0°C | 14.8°C | 32.8°C | 8.8°C | 118 mm | 73% | 0.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 26.5°C with lows near 14.8°C (mean 20.7°C), based on 45 years of NASA POWER data.
June averages 98 mm of rainfall in Chambersburg, about average for rainfall. The wettest on record was 210 mm in 2015.
The hottest June reached 36.8°C in 2024. The coldest dipped to 4.1°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.2°C. Daytime highs moved from 25.3°C to 27.8°C and overnight lows from 13.7°C to 15.5°C over the same span.
June is one of the warmer months of the year in Chambersburg and about average for rainfall, so plan for around 26.5°C daytime highs and 14.8°C at night.
Not quite — June is the 10th coolest month in Chambersburg, averaging 20.7°C.
For June in Chambersburg, pack light layers you can adjust through the day, with typical highs of 26.5°C and lows of 14.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 74% — moderately humid.
Average wind speed in June is 0.9 m/s. The windiest June on record averaged 1 m/s (1985).
The wettest June on record was 2015 with 210 mm. On average, June sees 98 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 Chambersburg 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.
