Round Rock Weather in January
Average highs run from 39°F on January 1 to 41°F on January 31, and lows from 17°F to 21°F.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 39°F
- Average low
- 18°F
- Record high
- 63°FJan 15, 2000
- Record low
- -25°FJan 1, 2011
- Chance of a freeze
- 100%
- Daylight
- 9 h 43 min to 10 h 23 min
- Cloud cover
- 51%
- Humidity
- 63%
- Dew point
- 19°F
- Wind
- 8.1 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 |
|---|---|---|---|---|---|
| Jan 1 | 39°F | 17°F | 59°F 2018 | -25°F 2011 | |
| Jan 2 | 39°F | 17°F | 59°F 2006 | -20°F 2011 | |
| Jan 3 | 39°F | 17°F | 62°F 2025 | -14°F 2013 | |
| Jan 4 | 39°F | 17°F | 57°F 2018 | -14°F 2013 | |
| Jan 5 | 38°F | 17°F | 62°F 2018 | -10°F 2013 | |
| Jan 6 | 38°F | 17°F | 60°F 2006 | -9°F 2013 | |
| Jan 7 | 38°F | 17°F | 59°F 2006 | -6°F 2000 | |
| Jan 8 | 38°F | 17°F | 58°F 2002 | -4°F 2013 | |
| Jan 9 | 38°F | 17°F | 61°F 2018 | -11°F 2024 | |
| Jan 10 | 38°F | 18°F | 54°F 1999 | -5°F 2026 | |
| Jan 11 | 38°F | 18°F | 57°F 1999 | -9°F 2011 | |
| Jan 12 | 38°F | 18°F | 55°F 2002 | -18°F 2013 | |
| Jan 13 | 38°F | 18°F | 59°F 2021 | -15°F 2013 | |
| Jan 14 | 38°F | 18°F | 58°F 2000 | -13°F 2013 | |
| Jan 15 | 38°F | 18°F | 63°F 2000 | -22°F 2013 | |
| Jan 16 | 38°F | 18°F | 62°F 2000 | -8°F 2007 | |
| Jan 17 | 38°F | 18°F | 60°F 2021 | -13°F 2008 | |
| Jan 18 | 38°F | 18°F | 63°F 2000 | -5°F 2008 | |
| Jan 19 | 39°F | 19°F | 61°F 2000 | -6°F 2008 | |
| Jan 20 | 39°F | 19°F | 60°F 2014 | -7°F 2025 | |
| Jan 21 | 39°F | 19°F | 60°F 2005 | -13°F 2025 | |
| Jan 22 | 39°F | 19°F | 57°F 2026 | -7°F 2025 | |
| Jan 23 | 39°F | 19°F | 57°F 2003 | -8°F 2025 | |
| Jan 24 | 39°F | 19°F | 60°F 1999 | -5°F 2025 | |
| Jan 25 | 39°F | 20°F | 60°F 1999 | -7°F 2010 | |
| Jan 26 | 40°F | 20°F | 60°F 2015 | -9°F 2023 | |
| Jan 27 | 40°F | 20°F | 62°F 2003 | -9°F 2021 | |
| Jan 28 | 40°F | 20°F | 57°F 2003 | -3°F 2017 | |
| Jan 29 | 40°F | 20°F | 60°F 2018 | 1°F 2008 | |
| Jan 30 | 40°F | 20°F | 63°F 2018 | -1°F 2001 | |
| Jan 31 | 41°F | 21°F | 63°F 2003 | -11°F 2001 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 7:30 AM, sunset 5:13 PM
- January 31
- sunrise 7:20 AM, sunset 5:43 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.