Weather on December 9
Round Rock, TX
55 Years of Data
Avg High
62°F
Avg Low
40°F
Warmest
2022
71°F avg
Coldest
1978
31°F avg
About This Date
December 9th in Round Rock, TX typically brings mild winter weather, with average highs around 62°F and lows near 40°F. Over 30 years of records, the warmest December 9th was in 2022 (71°F average), while the coldest was 1978 (31°F) — a 40°F range across recorded history. Rain or other precipitation has occurred on about 30% of December 9th dates historically, with the wettest December 9th recording 3.53" of rain.
Planning for December 9th in Round Rock, TX? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 34° | 46° | — | — |
| 2024 | 57° | 46° | 52° | 0.03" | — |
| 2023 | 72° | 60° | 66° | — | — |
| 2022warmest | 78° | 65° | 71° | — | — |
| 2021 | 74° | 45° | 59° | — | — |
| 2020 | 75° | 40° | 57° | — | — |
| 2019 | 71° | 51° | 61° | — | — |
| 2018 | 43° | 35° | 39° | 0.03" | — |
| 2017 | 48° | 27° | 37° | — | — |
| 2016 | 40° | 30° | 35° | — | — |
| 2015 | 73° | 43° | 58° | — | — |
| 2014 | 64° | 40° | 52° | — | — |
| 2013 | 47° | 29° | 38° | 0.03" | — |
| 2012 | 78° | 63° | 70° | — | — |
| 2011 | 55° | 31° | 43° | — | — |
| 2010 | 56° | 35° | 45° | — | — |
| 2009 | 59° | 30° | 45° | 0.03" | — |
| 2008 | 74° | 53° | 63° | 0.03" | — |
| 1982 | 58° | 39° | 48° | 0.51" | — |
| 1981 | 74° | 48° | 61° | — | — |
| 1980 | 48° | 37° | 43° | 3.53" | — |
| 1979 | 72° | 33° | 52° | — | — |
| 1978coldest | 41° | 21° | 31° | — | — |
| 1977 | 76° | 30° | 53° | — | — |
| 1976 | 64° | 34° | 49° | — | — |
| 1975 | 68° | 39° | 54° | — | — |
| 1974 | 50° | 27° | 38° | — | — |
| 1973 | — | 29° | — | — | — |
| 1972 | 51° | 40° | 45° | 0.1" | — |
| 1971 | 72° | 51° | 61° | 1.24" | — |
30 years of data from GEORGETOWN