June is one of the warmer months of the year in Johnson City, with average highs near 27.2°C and lows around 16.3°C (mean 21.8°C). It is about average for rainfall, averaging 100 mm of rainfall and 75% relative humidity across the period.
June is one of the warmer months of the year in Johnson City. Across 45 years of records, the warmest June in Johnson City was 2010 — when the month averaged 23.9°C — while the coldest was 1992 at 19.3°C. Typical June days reach 27.2°C with nights near 16.3°C. The long-term trend is warming, about 0.3°C per decade.
June is about average for rainfall in Johnson City, averaging 100 mm of rainfall. The wettest June on record was 1989 with 192 mm, while the driest was 1988 at 39 mm.
Relative humidity in Johnson City during June averages 75%. The most humid June was 1998 at 85%, and the least humid was 1988 at 51%.
June receives about 6.1 kWh/m²/day of solar energy in Johnson City. The sunniest June was 2016 at 7 kWh/m²/day, and the cloudiest was 1992 at 5.
Average wind speed in Johnson City during June is 0.9 m/s. The windiest Junes were 2015, 2019 and 2023, among others at 1 m/s, while the calmest was 1991 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.5°C | 21.0°C | 21.9°C | 22.3°C | 22.1°C | +0.6°C |
| Avg High | 27.1°C | 26.1°C | 27.6°C | 27.6°C | 27.7°C | +0.6°C |
| Avg Low | 15.9°C | 15.9°C | 16.2°C | 17.0°C | 16.5°C | +0.6°C |
| Avg Rain | 101 mm | 101 mm | 105 mm | 104 mm | 84 mm | -18 mm |
June temperatures in Johnson City have risen by about 1.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 5.2°C (2003) to a record high of 39.1°C (2012).
Rainfall in June is about average for rainfall, averaging 100 mm, with a wettest year of 192 mm.
One of the best times to visit Johnson City
June is one of the best times to visit Johnson City. Expect days averaging 27.2°C and nights around 16.3°C (mean 21.8°C) — warmer than Johnson City's yearly average — with higher rainfall (100 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 | 28.4°C | 23.2°C | 18.1°C | 34.2°C | 11.8°C | 113 mm | 78% | 0.8 m/s | 6.4 |
| 2024 | 29.6°C | 23.5°C | 17.4°C | 35.9°C | 9.4°C | 48 mm | 70% | 0.9 m/s | 6.5 |
| 2023 | 25.6°C | 20.0°C | 14.3°C | 31.2°C | 9.6°C | 93 mm | 74% | 1 m/s | 5.9 |
| 2022 | 29.5°C | 23.0°C | 16.6°C | 35.2°C | 9.6°C | 55 mm | 67% | 0.9 m/s | 6.8 |
| 2021 | 27.5°C | 22.0°C | 16.5°C | 32.4°C | 10.9°C | 99 mm | 76% | 0.9 m/s | 6.5 |
| 2020 | 25.3°C | 20.7°C | 16.1°C | 30.1°C | 7.7°C | 95 mm | 83% | 0.9 m/s | 6.1 |
| 2019 | 25.7°C | 21.0°C | 16.3°C | 31.3°C | 7.9°C | 177 mm | 82% | 1 m/s | 5.9 |
| 2018 | 27.4°C | 22.6°C | 17.8°C | 32.2°C | 12.2°C | 100 mm | 82% | 0.8 m/s | 6.4 |
| 2017 | 25.8°C | 20.7°C | 15.7°C | 29.4°C | 10.2°C | 75 mm | 78% | 0.9 m/s | 6.3 |
| 2016 | 29.1°C | 23.1°C | 17.2°C | 34.0°C | 10.1°C | 85 mm | 70% | 0.9 m/s | 7 |
| 2015 | 28.9°C | 23.3°C | 17.7°C | 33.4°C | 12.1°C | 104 mm | 73% | 1 m/s | 6.3 |
| 2014 | 28.8°C | 23.1°C | 17.3°C | 32.1°C | 13.3°C | 93 mm | 72% | 0.9 m/s | 6.2 |
| 2013 | 25.8°C | 21.1°C | 16.4°C | 27.8°C | 12.6°C | 169 mm | 83% | 0.9 m/s | 5.8 |
| 2012 | 28.0°C | 21.6°C | 15.2°C | 39.1°C | 8.5°C | 47 mm | 67% | 0.9 m/s | 6.6 |
| 2011 | 27.2°C | 22.2°C | 17.2°C | 30.6°C | 12.0°C | 111 mm | 78% | 0.9 m/s | 6.3 |
| 2010 🔥 | 28.9°C | 23.9°C | 18.9°C | 33.3°C | 13.4°C | 81 mm | 77% | 0.9 m/s | 6.2 |
| 2009 | 26.3°C | 21.7°C | 17.1°C | 29.1°C | 12.8°C | 128 mm | 82% | 0.9 m/s | 6.1 |
| 2008 | 30.1°C | 23.5°C | 17.0°C | 33.9°C | 11.2°C | 73 mm | 62% | 1 m/s | 6.7 |
| 2007 | 30.2°C | 23.4°C | 16.5°C | 34.6°C | 12.7°C | 98 mm | 60% | 0.9 m/s | 6.3 |
| 2006 | 27.2°C | 21.3°C | 15.5°C | 33.4°C | 9.7°C | 119 mm | 70% | 0.9 m/s | 6.2 |
| 2005 | 26.8°C | 21.5°C | 16.2°C | 32.0°C | 11.2°C | 75 mm | 77% | 0.9 m/s | 5.9 |
| 2004 | 25.5°C | 21.1°C | 16.6°C | 28.3°C | 11.4°C | 123 mm | 83% | 0.8 m/s | 5.3 |
| 2003 | 24.6°C | 19.7°C | 14.8°C | 29.4°C | 5.2°C | 139 mm | 82% | 1 m/s | 5.8 |
| 2002 | 29.7°C | 23.1°C | 16.6°C | 34.0°C | 11.8°C | 67 mm | 66% | 0.9 m/s | 6.4 |
| 2001 | 27.5°C | 21.4°C | 15.2°C | 32.0°C | 10.1°C | 116 mm | 72% | 0.9 m/s | 6.1 |
| 2000 | 28.4°C | 22.5°C | 16.7°C | 33.2°C | 6.4°C | 108 mm | 69% | 1 m/s | 5.6 |
| 1999 | 28.4°C | 22.2°C | 15.9°C | 33.7°C | 9.8°C | 97 mm | 66% | 1 m/s | 5.8 |
| 1998 | 25.8°C | 21.5°C | 17.1°C | 30.8°C | 6.6°C | 149 mm | 85% | 1 m/s | 5.4 |
| 1997 | 24.3°C | 19.7°C | 15.1°C | 30.5°C | 8.5°C | 94 mm | 82% | 0.9 m/s | 5.3 |
| 1996 | 26.3°C | 21.1°C | 16.0°C | 30.7°C | 10.1°C | 81 mm | 79% | 0.9 m/s | 6.4 |
| 1995 | 26.0°C | 20.9°C | 15.7°C | 30.1°C | 8.6°C | 128 mm | 77% | 0.8 m/s | 5.7 |
| 1994 | 26.9°C | 22.1°C | 17.3°C | 29.7°C | 12.2°C | 113 mm | 81% | 0.8 m/s | 5.7 |
| 1993 | 27.9°C | 22.1°C | 16.2°C | 33.2°C | 7.3°C | 39 mm | 72% | 0.9 m/s | 6.4 |
| 1992 ❄️ | 24.4°C | 19.3°C | 14.2°C | 29.0°C | 5.5°C | 115 mm | 82% | 0.9 m/s | 5 |
| 1991 | 25.5°C | 21.0°C | 16.4°C | 29.1°C | 10.4°C | 121 mm | 81% | 0.7 m/s | 5.5 |
| 1990 | 25.7°C | 20.4°C | 15.2°C | 29.7°C | 8.8°C | 68 mm | 79% | 1 m/s | 6.2 |
| 1989 🌧️ | 24.8°C | 20.5°C | 16.2°C | 28.8°C | 11.4°C | 192 mm | 84% | 0.9 m/s | 5.2 |
| 1988 | 30.0°C | 22.4°C | 14.7°C | 36.3°C | 5.8°C | 39 mm | 51% | 0.9 m/s | 6.4 |
| 1987 | 26.3°C | 21.3°C | 16.3°C | 28.5°C | 9.8°C | 92 mm | 79% | 0.8 m/s | 6 |
| 1986 | 30.0°C | 23.2°C | 16.4°C | 33.6°C | 10.9°C | 48 mm | 63% | 0.9 m/s | 6.3 |
| 1985 | 27.5°C | 21.4°C | 15.4°C | 31.2°C | 7.9°C | 111 mm | 69% | 1 m/s | 6 |
| 1984 | 26.5°C | 21.6°C | 16.6°C | 28.9°C | 6.3°C | 107 mm | 79% | 0.8 m/s | 5.9 |
| 1983 | 25.5°C | 20.2°C | 15.0°C | 29.7°C | 8.2°C | 89 mm | 78% | 0.8 m/s | — |
| 1982 | 25.3°C | 20.2°C | 15.1°C | 28.0°C | 11.7°C | 121 mm | 80% | 0.9 m/s | — |
| 1981 | 27.7°C | 22.4°C | 17.0°C | 32.2°C | 12.7°C | 114 mm | 76% | 0.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27.2°C with lows near 16.3°C (mean 21.8°C), based on 45 years of NASA POWER data.
June averages 100 mm of rainfall in Johnson City, about average for rainfall. The wettest on record was 192 mm in 1989.
The hottest June reached 39.1°C in 2012. The coldest dipped to 5.2°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.1°C. Daytime highs moved from 26.5°C to 28.1°C and overnight lows from 15.8°C to 16.6°C over the same span.
June is one of the warmer months of the year in Johnson City and about average for rainfall, so plan for around 27.2°C daytime highs and 16.3°C at night.
Not quite — June is the 10th coolest month in Johnson City, averaging 21.8°C.
For June in Johnson City, pack light layers you can adjust through the day, with typical highs of 27.2°C and lows of 16.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 75% — quite 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 1989 with 192 mm. On average, June sees 100 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 Johnson City 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.
