June is one of the warmer months of the year in Chattanooga, with average highs near 30.2°C and lows around 18.6°C (mean 24.4°C). It is about average for rainfall, averaging 108 mm of rainfall and 73% relative humidity across the period.
June is one of the warmer months of the year in Chattanooga. Across 45 years of records, the warmest Junes in Chattanooga were 2010 and 2016 — when the month averaged 26.3°C — while the coldest was 1997 at 22.1°C. Typical June days reach 30.2°C with nights near 18.6°C. The long-term trend is warming, about 0.3°C per decade.
June is about average for rainfall in Chattanooga, averaging 108 mm of rainfall. The wettest June on record was 1989 with 279 mm, while the driest was 1988 at 22 mm.
Relative humidity in Chattanooga during June averages 73%. The most humid June was 1989 at 86%, and the least humid was 1988 at 49%.
June receives about 6.2 kWh/m²/day of solar energy in Chattanooga. The sunniest June was 2012 at 7.1 kWh/m²/day, and the cloudiest was 1997 at 5.
Average wind speed in Chattanooga during June is 0.4 m/s. The windiest Junes were 2006, 2008 and 2023, among others at 0.5 m/s, while the calmest were 2022, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.2°C | 23.6°C | 24.5°C | 25.0°C | 24.6°C | +0.4°C |
| Avg High | 30.2°C | 29.1°C | 30.6°C | 30.6°C | 30.5°C | +0.3°C |
| Avg Low | 18.1°C | 18.2°C | 18.4°C | 19.4°C | 18.7°C | +0.6°C |
| Avg Rain | 106 mm | 117 mm | 96 mm | 117 mm | 100 mm | -6 mm |
June temperatures in Chattanooga have risen by about 1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 8.9°C (1988) to a record high of 41.7°C (2012).
Rainfall in June is about average for rainfall, averaging 108 mm, with a wettest year of 279 mm.
One of the best times to visit Chattanooga
June is one of the best times to visit Chattanooga. Expect days averaging 30.2°C and nights around 18.6°C (mean 24.4°C) — warmer than Chattanooga's yearly average — with higher rainfall (108 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 | 30.7°C | 25.1°C | 19.6°C | 37.3°C | 14.0°C | 113 mm | 77% | 0.4 m/s | 6.1 |
| 2024 | 32.4°C | 25.8°C | 19.2°C | 38.2°C | 14.1°C | 40 mm | 69% | 0.4 m/s | 6.7 |
| 2023 | 29.7°C | 23.4°C | 17.1°C | 35.0°C | 12.0°C | 133 mm | 72% | 0.5 m/s | 6.1 |
| 2022 | 32.6°C | 25.9°C | 19.3°C | 37.8°C | 13.5°C | 73 mm | 65% | 0.4 m/s | 7 |
| 2021 | 29.4°C | 24.0°C | 18.6°C | 33.4°C | 13.2°C | 140 mm | 78% | 0.4 m/s | 6.3 |
| 2020 | 28.4°C | 23.4°C | 18.5°C | 33.1°C | 12.8°C | 99 mm | 80% | 0.4 m/s | 6.2 |
| 2019 | 29.1°C | 24.0°C | 18.8°C | 33.4°C | 11.1°C | 147 mm | 78% | 0.4 m/s | 6 |
| 2018 | 30.4°C | 25.2°C | 20.0°C | 34.0°C | 13.7°C | 150 mm | 80% | 0.4 m/s | 6.4 |
| 2017 | 28.8°C | 23.6°C | 18.3°C | 33.8°C | 13.6°C | 139 mm | 78% | 0.4 m/s | 6 |
| 2016 | 33.0°C | 26.3°C | 19.6°C | 37.7°C | 13.6°C | 72 mm | 66% | 0.4 m/s | 6.9 |
| 2015 | 31.6°C | 25.8°C | 20.0°C | 36.5°C | 14.1°C | 95 mm | 72% | 0.4 m/s | 6.5 |
| 2014 | 29.7°C | 24.7°C | 19.7°C | 33.4°C | 16.7°C | 160 mm | 78% | 0.4 m/s | 5.7 |
| 2013 | 28.7°C | 23.8°C | 18.9°C | 32.2°C | 15.6°C | 155 mm | 82% | 0.4 m/s | 6 |
| 2012 | 31.7°C | 24.7°C | 17.7°C | 41.7°C | 10.4°C | 65 mm | 65% | 0.4 m/s | 7.1 |
| 2011 | 31.6°C | 25.9°C | 20.2°C | 34.7°C | 17.8°C | 109 mm | 74% | 0.4 m/s | 6.2 |
| 2010 🔥 | 31.6°C | 26.3°C | 21.1°C | 37.0°C | 15.5°C | 80 mm | 77% | 0.4 m/s | 6.4 |
| 2009 | 30.1°C | 24.9°C | 19.7°C | 33.2°C | 14.4°C | 56 mm | 79% | 0.4 m/s | 6.7 |
| 2008 | 32.3°C | 25.8°C | 19.3°C | 36.8°C | 13.9°C | 73 mm | 65% | 0.5 m/s | 6.8 |
| 2007 | 33.1°C | 26.0°C | 18.9°C | 36.8°C | 14.8°C | 72 mm | 58% | 0.4 m/s | 6.4 |
| 2006 | 31.3°C | 24.7°C | 18.1°C | 37.0°C | 11.4°C | 55 mm | 64% | 0.5 m/s | 6.7 |
| 2005 | 30.0°C | 24.3°C | 18.6°C | 34.7°C | 14.0°C | 113 mm | 76% | 0.4 m/s | 5.9 |
| 2004 | 30.3°C | 24.7°C | 19.1°C | 34.8°C | 12.8°C | 151 mm | 73% | 0.4 m/s | 5.4 |
| 2003 | 27.5°C | 22.3°C | 17.1°C | 33.2°C | 9.8°C | 139 mm | 81% | 0.4 m/s | 5.9 |
| 2002 | 31.6°C | 24.8°C | 18.1°C | 35.3°C | 13.1°C | 56 mm | 66% | 0.4 m/s | 6.5 |
| 2001 | 28.8°C | 22.7°C | 16.7°C | 33.9°C | 10.8°C | 131 mm | 75% | 0.4 m/s | 6.2 |
| 2000 | 31.3°C | 24.7°C | 18.1°C | 35.4°C | 9.0°C | 109 mm | 66% | 0.5 m/s | 5.8 |
| 1999 | 29.6°C | 23.7°C | 17.8°C | 34.5°C | 12.3°C | 148 mm | 74% | 0.4 m/s | 5.9 |
| 1998 | 30.4°C | 25.0°C | 19.7°C | 34.7°C | 9.1°C | 143 mm | 78% | 0.5 m/s | 6.2 |
| 1997 ❄️ | 26.8°C | 22.1°C | 17.4°C | 32.3°C | 10.9°C | 140 mm | 84% | 0.4 m/s | 5 |
| 1996 | 29.6°C | 23.8°C | 18.0°C | 35.5°C | 12.4°C | 90 mm | 75% | 0.4 m/s | 6.2 |
| 1995 | 29.9°C | 23.6°C | 17.4°C | 34.7°C | 11.0°C | 83 mm | 71% | 0.4 m/s | 6.2 |
| 1994 | 29.8°C | 24.7°C | 19.6°C | 34.5°C | 16.8°C | 146 mm | 80% | 0.4 m/s | 5.9 |
| 1993 | 29.9°C | 24.0°C | 18.2°C | 33.6°C | 10.8°C | 56 mm | 75% | 0.4 m/s | 6.2 |
| 1992 | 27.6°C | 22.3°C | 17.0°C | 32.4°C | 10.4°C | 168 mm | 78% | 0.4 m/s | 5.2 |
| 1991 | 28.1°C | 23.6°C | 19.1°C | 32.4°C | 13.2°C | 141 mm | 82% | 0.4 m/s | 5.6 |
| 1990 | 29.4°C | 23.4°C | 17.4°C | 34.6°C | 10.6°C | 58 mm | 75% | 0.4 m/s | 6.9 |
| 1989 🌧️ | 26.6°C | 22.5°C | 18.5°C | 31.4°C | 13.1°C | 279 mm | 86% | 0.5 m/s | 5.1 |
| 1988 | 33.9°C | 25.5°C | 17.1°C | 38.9°C | 8.9°C | 22 mm | 49% | 0.4 m/s | 6.6 |
| 1987 | 30.1°C | 24.4°C | 18.6°C | 33.1°C | 13.1°C | 104 mm | 73% | 0.4 m/s | 6 |
| 1986 | 32.6°C | 26.0°C | 19.4°C | 37.0°C | 16.2°C | 70 mm | 65% | 0.4 m/s | 6.2 |
| 1985 | 30.9°C | 24.4°C | 18.0°C | 35.4°C | 9.5°C | 104 mm | 67% | 0.5 m/s | 6 |
| 1984 | 29.9°C | 24.2°C | 18.5°C | 34.0°C | 9.4°C | 89 mm | 75% | 0.4 m/s | 6.5 |
| 1983 | 27.6°C | 22.2°C | 16.8°C | 33.1°C | 10.8°C | 100 mm | 79% | 0.4 m/s | — |
| 1982 | 28.7°C | 23.0°C | 17.3°C | 32.4°C | 12.6°C | 83 mm | 76% | 0.4 m/s | — |
| 1981 | 31.8°C | 25.4°C | 19.0°C | 37.8°C | 15.1°C | 101 mm | 71% | 0.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 30.2°C with lows near 18.6°C (mean 24.4°C), based on 45 years of NASA POWER data.
June averages 108 mm of rainfall in Chattanooga, about average for rainfall. The wettest on record was 279 mm in 1989.
The hottest June reached 41.7°C in 2012. The coldest dipped to 8.9°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1°C. Daytime highs moved from 29.8°C to 31°C and overnight lows from 17.9°C to 18.8°C over the same span.
June is one of the warmer months of the year in Chattanooga and about average for rainfall, so plan for around 30.2°C daytime highs and 18.6°C at night.
Not quite — June is the 10th coolest month in Chattanooga, averaging 24.4°C.
For June in Chattanooga, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 18.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 73% — moderately humid.
Average wind speed in June is 0.4 m/s. The windiest June on record averaged 0.5 m/s (1985).
The wettest June on record was 1989 with 279 mm. On average, June sees 108 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 Chattanooga 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.
