July is one of the warmer months of the year in Johnson City, with average highs near 29.5°C and lows around 18.5°C (mean 24°C). It is a relatively wet time of year, averaging 123 mm of rainfall and 73% relative humidity across the period.
July is one of the warmer months of the year in Johnson City. Across 45 years of records, the warmest July in Johnson City was 1993 — when the month averaged 27°C — while the coldest was 1984 at 21°C. Typical July days reach 29.5°C with nights near 18.5°C. The long-term trend is warming, about 0.3°C per decade.
July is a relatively wet time of year in Johnson City, averaging 123 mm of rainfall. The wettest July on record was 2012 with 195 mm, while the driest was 1995 at 45 mm.
Relative humidity in Johnson City during July averages 73%. The most humid July was 1989 at 85%, and the least humid was 1988 at 59%.
July receives about 5.8 kWh/m²/day of solar energy in Johnson City. The sunniest Julys were 2018 and 2020 at 6.5 kWh/m²/day, and the cloudiest was 1984 at 5.1.
Average wind speed in Johnson City during July is 0.8 m/s. The windiest Julys were 2014, 2015 and 2022, among others at 0.9 m/s, while the calmest were 2019, 2020 and 2025, among others at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.7°C | 24.0°C | 23.4°C | 24.3°C | 25.2°C | +1.5°C |
| Avg High | 29.2°C | 29.6°C | 29.0°C | 29.6°C | 30.7°C | +1.5°C |
| Avg Low | 18.2°C | 18.5°C | 17.8°C | 18.9°C | 19.6°C | +1.4°C |
| Avg Rain | 126 mm | 100 mm | 129 mm | 131 mm | 132 mm | +7 mm |
July temperatures in Johnson City have risen by about 2.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 9.3°C (1983) to a record high of 38.3°C (2012).
Rainfall in July is a relatively wet time of year, averaging 123 mm, with a wettest year of 195 mm.
One of the best times to visit Johnson City
July is one of the best times to visit Johnson City. Expect days averaging 29.5°C and nights around 18.5°C (mean 24°C) — warmer than Johnson City's yearly average — with higher rainfall (123 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 | 31.2°C | 25.9°C | 20.6°C | 33.9°C | 17.8°C | 140 mm | 74% | 0.7 m/s | 6.4 |
| 2024 | 31.8°C | 25.9°C | 19.9°C | 36.9°C | 16.0°C | 140 mm | 67% | 0.8 m/s | 5.8 |
| 2023 | 30.7°C | 25.0°C | 19.3°C | 35.9°C | 15.7°C | 113 mm | 71% | 0.8 m/s | 6 |
| 2022 | 31.1°C | 25.6°C | 20.1°C | 34.8°C | 16.1°C | 192 mm | 73% | 0.9 m/s | 5.6 |
| 2021 | 30.0°C | 24.2°C | 18.3°C | 34.9°C | 12.1°C | 100 mm | 71% | 0.8 m/s | 6 |
| 2020 | 29.2°C | 24.3°C | 19.4°C | 32.0°C | 16.7°C | 107 mm | 78% | 0.7 m/s | 6.5 |
| 2019 | 28.6°C | 23.9°C | 19.3°C | 31.6°C | 12.1°C | 121 mm | 78% | 0.7 m/s | 6.1 |
| 2018 | 29.8°C | 24.3°C | 18.9°C | 33.6°C | 14.0°C | 91 mm | 73% | 0.8 m/s | 6.5 |
| 2017 | 30.9°C | 25.1°C | 19.2°C | 35.6°C | 13.6°C | 102 mm | 68% | 0.8 m/s | 6.3 |
| 2016 | 31.8°C | 25.9°C | 19.9°C | 37.4°C | 17.2°C | 119 mm | 68% | 0.8 m/s | 6.3 |
| 2015 | 28.3°C | 23.6°C | 18.9°C | 31.9°C | 15.4°C | 165 mm | 80% | 0.9 m/s | 5.7 |
| 2014 | 28.4°C | 22.3°C | 16.3°C | 33.2°C | 10.8°C | 129 mm | 70% | 0.9 m/s | 5.9 |
| 2013 | 26.5°C | 22.1°C | 17.8°C | 29.6°C | 11.1°C | 190 mm | 84% | 0.8 m/s | 5.6 |
| 2012 🌧️ | 30.2°C | 24.9°C | 19.7°C | 38.3°C | 15.9°C | 195 mm | 75% | 0.8 m/s | 5.6 |
| 2011 | 30.1°C | 25.0°C | 19.8°C | 34.3°C | 14.5°C | 99 mm | 74% | 0.7 m/s | 5.8 |
| 2010 | 31.7°C | 25.6°C | 19.4°C | 36.0°C | 11.8°C | 101 mm | 67% | 0.8 m/s | 6.3 |
| 2009 | 26.5°C | 21.4°C | 16.3°C | 29.5°C | 11.9°C | 162 mm | 78% | 0.9 m/s | 5.4 |
| 2008 | 30.4°C | 23.8°C | 17.2°C | 34.4°C | 11.5°C | 117 mm | 64% | 0.8 m/s | 6.2 |
| 2007 | 29.2°C | 23.1°C | 17.0°C | 34.8°C | 12.1°C | 122 mm | 67% | 0.8 m/s | 5.4 |
| 2006 | 30.8°C | 24.5°C | 18.2°C | 35.0°C | 10.8°C | 78 mm | 66% | 0.9 m/s | 6 |
| 2005 | 29.3°C | 24.4°C | 19.4°C | 34.9°C | 15.1°C | 159 mm | 77% | 0.8 m/s | 5.2 |
| 2004 | 27.8°C | 23.0°C | 18.1°C | 31.0°C | 13.8°C | 103 mm | 77% | 0.8 m/s | 5.7 |
| 2003 | 26.6°C | 22.2°C | 17.7°C | 29.2°C | 13.8°C | 162 mm | 84% | 0.9 m/s | 5.6 |
| 2002 | 31.5°C | 25.4°C | 19.4°C | 34.6°C | 16.4°C | 94 mm | 67% | 0.8 m/s | 5.6 |
| 2001 | 28.9°C | 23.1°C | 17.3°C | 32.6°C | 11.4°C | 174 mm | 71% | 0.9 m/s | 5.4 |
| 2000 | 28.6°C | 23.0°C | 17.3°C | 32.7°C | 14.1°C | 117 mm | 71% | 0.9 m/s | 5.6 |
| 1999 | 31.0°C | 24.9°C | 18.8°C | 36.1°C | 13.0°C | 115 mm | 71% | 0.8 m/s | 5.6 |
| 1998 | 27.6°C | 22.8°C | 18.1°C | 31.7°C | 15.6°C | 83 mm | 80% | 0.8 m/s | 5.5 |
| 1997 | 30.3°C | 24.3°C | 18.3°C | 33.5°C | 12.0°C | 80 mm | 70% | 0.8 m/s | 6.2 |
| 1996 | 27.6°C | 22.3°C | 17.0°C | 31.5°C | 12.4°C | 140 mm | 75% | 0.9 m/s | 5.2 |
| 1995 | 32.1°C | 25.5°C | 18.9°C | 35.9°C | 13.3°C | 45 mm | 63% | 0.8 m/s | 6.3 |
| 1994 | 28.0°C | 23.2°C | 18.4°C | 30.8°C | 15.2°C | 113 mm | 77% | 0.8 m/s | 5.5 |
| 1993 🔥 | 33.7°C | 27.0°C | 20.4°C | 36.9°C | 13.4°C | 69 mm | 60% | 0.8 m/s | 6.2 |
| 1992 | 28.5°C | 23.4°C | 18.3°C | 32.2°C | 14.7°C | 109 mm | 76% | 0.9 m/s | 5.6 |
| 1991 | 28.1°C | 23.5°C | 19.0°C | 31.6°C | 15.8°C | 136 mm | 80% | 0.8 m/s | 5.8 |
| 1990 | 28.7°C | 23.2°C | 17.6°C | 32.9°C | 13.1°C | 108 mm | 73% | 0.8 m/s | 5.9 |
| 1989 | 26.4°C | 22.3°C | 18.3°C | 29.0°C | 15.2°C | 148 mm | 85% | 0.8 m/s | 5.3 |
| 1988 | 32.0°C | 25.3°C | 18.7°C | 37.8°C | 10.6°C | 110 mm | 59% | 0.8 m/s | 5.8 |
| 1987 | 29.6°C | 24.1°C | 18.6°C | 35.0°C | 13.3°C | 96 mm | 68% | 0.8 m/s | 6 |
| 1986 | 32.5°C | 26.1°C | 19.7°C | 35.5°C | 12.6°C | 99 mm | 61% | 0.9 m/s | 6 |
| 1985 | 29.0°C | 23.4°C | 17.7°C | 33.6°C | 13.9°C | 136 mm | 70% | 0.9 m/s | 5.2 |
| 1984 ❄️ | 25.9°C | 21.0°C | 16.0°C | 29.1°C | 10.3°C | 152 mm | 80% | 0.8 m/s | 5.1 |
| 1983 | 29.1°C | 23.5°C | 17.8°C | 32.9°C | 9.3°C | 96 mm | 71% | 0.8 m/s | — |
| 1982 | 28.5°C | 23.5°C | 18.5°C | 32.5°C | 13.3°C | 164 mm | 78% | 0.7 m/s | — |
| 1981 | 29.8°C | 24.1°C | 18.4°C | 33.3°C | 12.9°C | 130 mm | 74% | 0.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 29.5°C with lows near 18.5°C (mean 24°C), based on 45 years of NASA POWER data.
July averages 123 mm of rainfall in Johnson City, a relatively wet time of year. The wettest on record was 195 mm in 2012.
The hottest July reached 38.3°C in 2012. The coldest dipped to 9.3°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.2°C. Daytime highs moved from 28.5°C to 31°C and overnight lows from 17.7°C to 19.6°C over the same span.
July is one of the warmer months of the year in Johnson City and a relatively wet time of year, so plan for around 29.5°C daytime highs and 18.5°C at night.
Not quite — July is the 12th coolest month in Johnson City, averaging 24°C.
For July in Johnson City, pack light layers you can adjust through the day, with typical highs of 29.5°C and lows of 18.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 73% — moderately humid.
Average wind speed in July is 0.8 m/s. The windiest July on record averaged 0.9 m/s (1981).
The wettest July on record was 2012 with 195 mm. On average, July sees 123 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 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.
