July is one of the warmer months of the year in Maryville, with average highs near 28.5°C and lows around 17.9°C (mean 23.2°C). It is a relatively wet time of year, averaging 132 mm of rainfall and 76% relative humidity across the period.
July is one of the warmer months of the year in Maryville. Across 45 years of records, the warmest July in Maryville was 1993 — when the month averaged 26°C — while the coldest was 2009 at 20.4°C. Typical July days reach 28.5°C with nights near 17.9°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Maryville, averaging 132 mm of rainfall. The wettest July on record was 1984 with 233 mm, while the driest was 1993 at 51 mm.
Relative humidity in Maryville during July averages 76%. The most humid Julys were 1989 and 2013 at 85%, and the least humid was 1986 at 62%.
July receives about 5.7 kWh/m²/day of solar energy in Maryville. The sunniest July was 2025 at 6.4 kWh/m²/day, and the cloudiest was 1984 at 4.9.
Average wind speed in Maryville during July is 0.3 m/s. The windiest Julys were 1988, 1992 and 2008, among others at 0.4 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.0°C | 23.2°C | 22.7°C | 23.5°C | 24.0°C | +1°C |
| Avg High | 28.4°C | 28.4°C | 28.2°C | 28.6°C | 29.4°C | +1°C |
| Avg Low | 17.6°C | 18.0°C | 17.2°C | 18.3°C | 18.7°C | +1.1°C |
| Avg Rain | 130 mm | 112 mm | 138 mm | 145 mm | 134 mm | +4 mm |
July temperatures in Maryville have risen by about 1.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8.9°C (2014) to a record high of 38.3°C (2023).
Rainfall in July is a relatively wet time of year, averaging 132 mm, with a wettest year of 233 mm.
One of the best times to visit Maryville
July is one of the best times to visit Maryville. Expect days averaging 28.5°C and nights around 17.9°C (mean 23.2°C) — warmer than Maryville's yearly average — with higher rainfall (132 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 | 30.4°C | 25.0°C | 19.5°C | 33.1°C | 16.7°C | 100 mm | 76% | 0.3 m/s | 6.4 |
| 2024 | 30.0°C | 24.4°C | 18.8°C | 34.2°C | 15.2°C | 148 mm | 74% | 0.3 m/s | 5.6 |
| 2023 | 28.7°C | 23.5°C | 18.4°C | 38.3°C | 15.1°C | 144 mm | 77% | 0.3 m/s | 6.1 |
| 2022 | 30.4°C | 24.7°C | 19.1°C | 33.0°C | 17.5°C | 181 mm | 75% | 0.3 m/s | 5.8 |
| 2021 | 27.7°C | 22.6°C | 17.5°C | 31.9°C | 12.3°C | 125 mm | 78% | 0.3 m/s | 6 |
| 2020 | 29.2°C | 24.0°C | 18.9°C | 31.8°C | 16.4°C | 105 mm | 76% | 0.3 m/s | 6.2 |
| 2019 | 27.8°C | 23.1°C | 18.4°C | 31.4°C | 12.0°C | 153 mm | 79% | 0.3 m/s | 6.1 |
| 2018 | 28.2°C | 23.2°C | 18.2°C | 32.0°C | 15.5°C | 130 mm | 80% | 0.3 m/s | 6.1 |
| 2017 | 28.5°C | 23.4°C | 18.4°C | 32.4°C | 12.9°C | 114 mm | 76% | 0.3 m/s | 6.3 |
| 2016 | 31.0°C | 25.1°C | 19.2°C | 34.0°C | 15.6°C | 109 mm | 71% | 0.3 m/s | 6.2 |
| 2015 | 26.9°C | 22.6°C | 18.3°C | 30.1°C | 15.1°C | 206 mm | 84% | 0.3 m/s | 5.7 |
| 2014 | 26.7°C | 21.1°C | 15.5°C | 30.4°C | 8.9°C | 132 mm | 77% | 0.3 m/s | 6 |
| 2013 | 26.1°C | 21.7°C | 17.4°C | 30.9°C | 13.3°C | 224 mm | 85% | 0.3 m/s | 5.2 |
| 2012 | 30.1°C | 24.6°C | 19.1°C | 37.4°C | 15.3°C | 168 mm | 74% | 0.3 m/s | 6 |
| 2011 | 30.3°C | 24.8°C | 19.3°C | 33.7°C | 16.3°C | 97 mm | 75% | 0.3 m/s | 6 |
| 2010 | 30.7°C | 24.9°C | 19.1°C | 34.4°C | 14.7°C | 114 mm | 72% | 0.3 m/s | 6.3 |
| 2009 ❄️ | 25.5°C | 20.4°C | 15.3°C | 28.5°C | 11.0°C | 153 mm | 81% | 0.3 m/s | 5.5 |
| 2008 | 29.5°C | 23.1°C | 16.8°C | 32.5°C | 10.7°C | 130 mm | 67% | 0.4 m/s | 6.3 |
| 2007 | 28.2°C | 22.4°C | 16.5°C | 32.7°C | 11.8°C | 132 mm | 73% | 0.3 m/s | 5.2 |
| 2006 | 29.8°C | 23.7°C | 17.5°C | 35.0°C | 11.0°C | 100 mm | 69% | 0.3 m/s | 5.9 |
| 2005 | 27.8°C | 23.2°C | 18.7°C | 33.8°C | 14.4°C | 185 mm | 81% | 0.3 m/s | 5.2 |
| 2004 | 27.8°C | 22.8°C | 17.8°C | 31.2°C | 14.2°C | 137 mm | 78% | 0.3 m/s | 5.8 |
| 2003 | 26.5°C | 21.9°C | 17.3°C | 29.1°C | 13.6°C | 190 mm | 84% | 0.3 m/s | 5.6 |
| 2002 | 30.1°C | 24.2°C | 18.2°C | 33.0°C | 15.9°C | 114 mm | 72% | 0.3 m/s | 5.7 |
| 2001 | 28.4°C | 22.7°C | 16.9°C | 31.2°C | 10.8°C | 143 mm | 73% | 0.3 m/s | 5.5 |
| 2000 | 28.8°C | 22.9°C | 16.9°C | 32.1°C | 14.4°C | 98 mm | 71% | 0.3 m/s | 5.8 |
| 1999 | 28.7°C | 23.6°C | 18.5°C | 33.3°C | 14.9°C | 133 mm | 78% | 0.3 m/s | 5.4 |
| 1998 | 27.7°C | 22.9°C | 18.1°C | 31.7°C | 15.6°C | 86 mm | 80% | 0.3 m/s | 5.4 |
| 1997 | 28.3°C | 23.0°C | 17.8°C | 31.4°C | 11.7°C | 87 mm | 75% | 0.3 m/s | 6.1 |
| 1996 | 27.0°C | 21.8°C | 16.7°C | 30.6°C | 11.8°C | 152 mm | 79% | 0.3 m/s | 5.3 |
| 1995 | 30.8°C | 24.4°C | 18.1°C | 34.1°C | 13.5°C | 57 mm | 67% | 0.3 m/s | 6.1 |
| 1994 | 26.0°C | 21.8°C | 17.6°C | 29.9°C | 14.4°C | 151 mm | 83% | 0.3 m/s | 5.1 |
| 1993 🔥 | 32.5°C | 26.0°C | 19.5°C | 35.1°C | 12.2°C | 51 mm | 63% | 0.3 m/s | 6.3 |
| 1992 | 27.4°C | 22.7°C | 18.1°C | 30.8°C | 16.3°C | 109 mm | 79% | 0.4 m/s | 5.4 |
| 1991 | 27.5°C | 23.1°C | 18.6°C | 30.6°C | 15.7°C | 134 mm | 82% | 0.3 m/s | 5.6 |
| 1990 | 27.7°C | 22.3°C | 16.9°C | 32.5°C | 13.3°C | 163 mm | 75% | 0.3 m/s | 5.6 |
| 1989 | 25.7°C | 21.6°C | 17.6°C | 29.4°C | 14.4°C | 186 mm | 85% | 0.3 m/s | 5.2 |
| 1988 | 29.8°C | 23.6°C | 17.5°C | 35.6°C | 9.5°C | 136 mm | 66% | 0.4 m/s | 5.1 |
| 1987 | 28.8°C | 23.4°C | 18.1°C | 33.6°C | 12.6°C | 78 mm | 70% | 0.4 m/s | 5.9 |
| 1986 | 31.9°C | 25.6°C | 19.2°C | 35.1°C | 12.8°C | 79 mm | 62% | 0.4 m/s | 5.8 |
| 1985 | 28.0°C | 22.5°C | 16.9°C | 32.6°C | 12.6°C | 115 mm | 73% | 0.3 m/s | 5.1 |
| 1984 🌧️ | 25.7°C | 20.7°C | 15.7°C | 29.9°C | 10.9°C | 233 mm | 82% | 0.3 m/s | 4.9 |
| 1983 | 28.1°C | 22.8°C | 17.6°C | 34.1°C | 10.7°C | 69 mm | 74% | 0.3 m/s | — |
| 1982 | 27.7°C | 22.9°C | 18.2°C | 32.5°C | 15.3°C | 177 mm | 82% | 0.3 m/s | — |
| 1981 | 29.6°C | 23.8°C | 18.0°C | 33.5°C | 13.8°C | 99 mm | 74% | 0.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 28.5°C with lows near 17.9°C (mean 23.2°C), based on 45 years of NASA POWER data.
July averages 132 mm of rainfall in Maryville, a relatively wet time of year. The wettest on record was 233 mm in 1984.
The hottest July reached 38.3°C in 2023. The coldest dipped to 8.9°C in 2014.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.5°C. Daytime highs moved from 27.8°C to 29.4°C and overnight lows from 17.3°C to 18.7°C over the same span.
July is one of the warmer months of the year in Maryville and a relatively wet time of year, so plan for around 28.5°C daytime highs and 17.9°C at night.
Not quite — July is the 12th coolest month in Maryville, averaging 23.2°C.
For July in Maryville, pack light layers you can adjust through the day, with typical highs of 28.5°C and lows of 17.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 76% — quite humid.
Average wind speed in July is 0.3 m/s. The windiest July on record averaged 0.4 m/s (1986).
The wettest July on record was 1984 with 233 mm. On average, July sees 132 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 Maryville 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.
