Round Rock Weather in August
Average highs run from 86°F on August 1 to 83°F on August 31, and lows from 59°F to 57°F.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 85°F
- Average low
- 58°F
- Record high
- 97°FAug 14, 2020
- Record low
- 35°FAug 25, 2002
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.2
- Daylight
- 14 h 00 min to 12 h 58 min
- Cloud cover
- 52%
- Humidity
- 41%
- Dew point
- 45°F
- Wind
- 6.5 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 86°F | 59°F | 93°F 2018 | 47°F 2009 | |
| Aug 2 | 86°F | 58°F | 93°F 2000 | 45°F 2009 | |
| Aug 3 | 86°F | 58°F | 94°F 2026 | 47°F 2023 | |
| Aug 4 | 86°F | 58°F | 94°F 2026 | 45°F 2025 | |
| Aug 5 | 86°F | 58°F | 93°F 2009 | 47°F 2023 | |
| Aug 6 | 86°F | 58°F | 95°F 2018 | 49°F 2015 | |
| Aug 7 | 86°F | 58°F | 96°F 2018 | 46°F 2018 | |
| Aug 8 | 86°F | 58°F | 93°F 2018 | 39°F 2009 | |
| Aug 9 | 85°F | 58°F | 92°F 2025 | 36°F 2009 | |
| Aug 10 | 85°F | 58°F | 92°F 2020 | 41°F 2009 | |
| Aug 11 | 85°F | 58°F | 91°F 2002 | 40°F 2009 | |
| Aug 12 | 85°F | 58°F | 92°F 2002 | 42°F 2025 | |
| Aug 13 | 85°F | 58°F | 93°F 2020 | 39°F 1999 | |
| Aug 14 | 85°F | 58°F | 97°F 2020 | 40°F 2002 | |
| Aug 15 | 85°F | 58°F | 97°F 2020 | 42°F 2002 | |
| Aug 16 | 85°F | 58°F | 97°F 2020 | 40°F 2017 | |
| Aug 17 | 85°F | 58°F | 95°F 2020 | 42°F 2009 | |
| Aug 18 | 85°F | 58°F | 93°F 2020 | 40°F 2008 | |
| Aug 19 | 85°F | 58°F | 96°F 2020 | 38°F 2009 | |
| Aug 20 | 84°F | 58°F | 96°F 2020 | 40°F 2009 | |
| Aug 21 | 84°F | 58°F | 95°F 2020 | 43°F 2002 | |
| Aug 22 | 84°F | 58°F | 95°F 2020 | 44°F 2007 | |
| Aug 23 | 84°F | 58°F | 94°F 2020 | 42°F 2001 | |
| Aug 24 | 84°F | 58°F | 94°F 2020 | 42°F 2001 | |
| Aug 25 | 84°F | 58°F | 92°F 2020 | 35°F 2002 | |
| Aug 26 | 84°F | 58°F | 94°F 2019 | 37°F 2002 | |
| Aug 27 | 84°F | 58°F | 93°F 2019 | 42°F 2009 | |
| Aug 28 | 83°F | 58°F | 92°F 2019 | 38°F 2006 | |
| Aug 29 | 83°F | 57°F | 90°F 2015 | 39°F 2006 | |
| Aug 30 | 83°F | 57°F | 92°F 2019 | 41°F 2002 | |
| Aug 31 | 83°F | 57°F | 93°F 2019 | 41°F 2004 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (MDT).
- August 1
- sunrise 6:24 AM, sunset 8:24 PM
- August 31
- sunrise 6:49 AM, sunset 7:47 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00025129 (Lukachukai), public domain. Records: NOAA GHCN-Daily, station USW00003029, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.