July is one of the warmer months of the year in Round Rock, with average highs near 35.9°C and lows around 23.7°C (mean 29.8°C). It is one of the drier months, averaging 54 mm of rainfall and 63% relative humidity across the period.
July is one of the warmer months of the year in Round Rock. Across 45 years of records, the warmest July in Round Rock was 2023 — when the month averaged 33.2°C — while the coldest was 2007 at 25.9°C. Typical July days reach 35.9°C with nights near 23.7°C. The long-term trend is warming, about 0.3°C per decade.
July is one of the drier months in Round Rock, averaging 54 mm of rainfall. The wettest July on record was 2007 with 210 mm, while the driest was 1993 at 1 mm.
Relative humidity in Round Rock during July averages 63%. The most humid July was 2007 at 86%, and the least humid was 2000 at 47%.
July receives about 6.8 kWh/m²/day of solar energy in Round Rock. The sunniest July was 2022 at 7.5 kWh/m²/day, and the cloudiest was 2007 at 5.3.
Average wind speed in Round Rock during July is 2.8 m/s. The windiest July was 1993 at 3.9 m/s, while the calmest was 2007 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.3°C | 29.7°C | 29.5°C | 30.2°C | 30.6°C | +1.3°C |
| Avg High | 35.6°C | 35.9°C | 35.2°C | 36.5°C | 36.9°C | +1.3°C |
| Avg Low | 23.0°C | 23.5°C | 23.7°C | 24.0°C | 24.4°C | +1.4°C |
| Avg Rain | 42 mm | 44 mm | 70 mm | 48 mm | 73 mm | +31 mm |
July temperatures in Round Rock have risen by about 1.3°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 17.7°C (1985) to a record high of 44.6°C (2018).
Rainfall in July is one of the drier months, averaging 54 mm, with a wettest year of 210 mm.
A good time to visit Round Rock
July is a good time to visit Round Rock, with days averaging 35.9°C and nights around 23.7°C (mean 29.8°C, warmer than Round Rock's yearly average) and moderate rainfall. October and April are marginally more temperate, but July still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 34.0°C | 28.5°C | 23.1°C | 39.9°C | 20.0°C | 180 mm | 71% | 2.4 m/s | 5.9 |
| 2024 | 35.6°C | 29.8°C | 24.1°C | 40.9°C | 22.2°C | 131 mm | 67% | 2.3 m/s | 6.3 |
| 2023 🔥 | 40.7°C | 33.2°C | 25.6°C | 43.3°C | 23.0°C | 4 mm | 47% | 2.8 m/s | 7.3 |
| 2022 | 40.3°C | 33.1°C | 25.9°C | 43.5°C | 23.9°C | 8 mm | 49% | 3.2 m/s | 7.5 |
| 2021 | 33.2°C | 28.2°C | 23.1°C | 38.1°C | 21.6°C | 85 mm | 74% | 2.2 m/s | 6.1 |
| 2020 | 37.5°C | 31.0°C | 24.6°C | 43.1°C | 22.1°C | 29 mm | 61% | 2.9 m/s | 6.8 |
| 2019 | 35.8°C | 29.7°C | 23.6°C | 39.8°C | 18.1°C | 21 mm | 64% | 2.8 m/s | 7.3 |
| 2018 | 38.1°C | 31.1°C | 24.1°C | 44.6°C | 22.1°C | 47 mm | 55% | 2.5 m/s | 7 |
| 2017 | 37.9°C | 31.4°C | 24.9°C | 42.2°C | 23.7°C | 23 mm | 55% | 2.7 m/s | 7.2 |
| 2016 | 37.1°C | 30.9°C | 24.6°C | 39.8°C | 23.1°C | 29 mm | 62% | 3.3 m/s | 7.3 |
| 2015 | 35.6°C | 29.5°C | 23.3°C | 39.6°C | 20.7°C | 3 mm | 68% | 3.1 m/s | 7.4 |
| 2014 | 36.0°C | 29.5°C | 23.0°C | 39.2°C | 19.4°C | 60 mm | 62% | 2.4 m/s | 6.7 |
| 2013 | 35.7°C | 29.5°C | 23.3°C | 41.3°C | 19.9°C | 98 mm | 59% | 2.6 m/s | 6.5 |
| 2012 | 35.2°C | 29.4°C | 23.5°C | 40.3°C | 22.3°C | 87 mm | 66% | 2.5 m/s | 6.5 |
| 2011 | 39.5°C | 32.4°C | 25.3°C | 41.6°C | 23.6°C | 6 mm | 47% | 3 m/s | 7.1 |
| 2010 | 34.2°C | 29.0°C | 23.9°C | 38.4°C | 22.5°C | 104 mm | 73% | 2.7 m/s | 6.3 |
| 2009 | 38.4°C | 31.7°C | 25.0°C | 41.3°C | 23.1°C | 37 mm | 53% | 2.8 m/s | 6.6 |
| 2008 | 36.6°C | 29.9°C | 23.2°C | 39.7°C | 21.0°C | 34 mm | 59% | 3 m/s | 6.9 |
| 2007 ❄️ 🌧️ | 29.5°C | 25.9°C | 22.3°C | 32.1°C | 20.9°C | 210 mm | 86% | 1.9 m/s | 5.3 |
| 2006 | 35.0°C | 29.4°C | 23.9°C | 40.2°C | 21.3°C | 39 mm | 66% | 2.7 m/s | 6.5 |
| 2005 | 36.0°C | 30.1°C | 24.2°C | 41.8°C | 21.6°C | 74 mm | 62% | 2 m/s | 6.5 |
| 2004 | 33.5°C | 28.0°C | 22.6°C | 38.3°C | 19.6°C | 49 mm | 71% | 2.4 m/s | 7 |
| 2003 | 34.9°C | 29.4°C | 23.8°C | 38.6°C | 22.5°C | 54 mm | 67% | 2.6 m/s | 6.4 |
| 2002 | 31.3°C | 27.2°C | 23.0°C | 34.7°C | 21.5°C | 162 mm | 80% | 2.5 m/s | 6.1 |
| 2001 | 37.9°C | 31.2°C | 24.6°C | 41.5°C | 21.1°C | 27 mm | 56% | 2.9 m/s | 7.3 |
| 2000 | 39.2°C | 31.8°C | 24.5°C | 42.3°C | 22.0°C | 15 mm | 47% | 3 m/s | 7.2 |
| 1999 | 34.0°C | 28.5°C | 23.0°C | 38.9°C | 21.5°C | 76 mm | 70% | 2.6 m/s | 6.7 |
| 1998 | 38.1°C | 31.5°C | 24.9°C | 41.5°C | 23.2°C | 45 mm | 55% | 3 m/s | 7.1 |
| 1997 | 35.8°C | 29.4°C | 23.1°C | 38.4°C | 20.0°C | 28 mm | 65% | 2.4 m/s | 7.3 |
| 1996 | 37.9°C | 31.2°C | 24.4°C | 40.4°C | 22.0°C | 34 mm | 56% | 3.2 m/s | 7 |
| 1995 | 36.8°C | 30.3°C | 23.8°C | 43.0°C | 20.5°C | 41 mm | 59% | 2.9 m/s | 7 |
| 1994 | 38.2°C | 31.2°C | 24.1°C | 41.9°C | 20.0°C | 11 mm | 51% | 3.4 m/s | 7 |
| 1993 | 36.0°C | 29.7°C | 23.4°C | 39.5°C | 21.4°C | 1 mm | 66% | 3.9 m/s | 7.2 |
| 1992 | 32.8°C | 27.7°C | 22.6°C | 36.0°C | 20.4°C | 44 mm | 75% | 3.1 m/s | 6.9 |
| 1991 | 34.8°C | 28.9°C | 22.9°C | 38.3°C | 20.3°C | 52 mm | 67% | 2.5 m/s | 6.7 |
| 1990 | 34.1°C | 28.4°C | 22.8°C | 40.3°C | 19.6°C | 105 mm | 63% | 2.8 m/s | 5.8 |
| 1989 | 36.6°C | 29.9°C | 23.1°C | 41.8°C | 20.8°C | 28 mm | 58% | 2.6 m/s | 6.8 |
| 1988 | 35.4°C | 29.2°C | 23.1°C | 38.3°C | 20.1°C | 75 mm | 63% | 2.7 m/s | 6.5 |
| 1987 | 32.1°C | 27.2°C | 22.3°C | 35.7°C | 20.0°C | 60 mm | 77% | 2.7 m/s | 6.5 |
| 1986 | 38.2°C | 30.9°C | 23.6°C | 42.9°C | 21.2°C | 6 mm | 52% | 3.2 m/s | 7.3 |
| 1985 | 35.4°C | 28.8°C | 22.1°C | 40.6°C | 17.7°C | 40 mm | 62% | 2.7 m/s | 7.1 |
| 1984 | 37.2°C | 30.3°C | 23.5°C | 41.8°C | 18.6°C | 52 mm | 52% | 2.8 m/s | 6.6 |
| 1983 | 34.9°C | 28.8°C | 22.7°C | 38.7°C | 19.8°C | 63 mm | 66% | 3 m/s | — |
| 1982 | 37.9°C | 31.0°C | 24.2°C | 40.5°C | 22.2°C | 11 mm | 53% | 3.3 m/s | — |
| 1981 | 32.6°C | 27.7°C | 22.8°C | 37.2°C | 20.7°C | 42 mm | 76% | 2.7 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 35.9°C with lows near 23.7°C (mean 29.8°C), based on 45 years of NASA POWER data.
July averages 54 mm of rainfall in Round Rock, one of the drier months. The wettest on record was 210 mm in 2007.
The hottest July reached 44.6°C in 2018. The coldest dipped to 17.7°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.3°C. Daytime highs moved from 35.6°C to 36.8°C and overnight lows from 23.1°C to 24.4°C over the same span.
July is one of the warmer months of the year in Round Rock and one of the drier months, so plan for around 35.9°C daytime highs and 23.7°C at night.
Not quite — July is the 11th coolest month in Round Rock, averaging 29.8°C.
For July in Round Rock, pack light, breathable clothing and sun protection, with typical highs of 35.9°C and lows of 23.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 63% — moderately humid.
Average wind speed in July is 2.8 m/s. The windiest July on record averaged 3.9 m/s (1993).
The wettest July on record was 2007 with 210 mm. On average, July sees 54 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 Round Rock 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.
