Weather on September 11
Round Rock, TX
55 Years of Data
Avg High
91°F
Avg Low
68°F
Warmest
2014
87°F avg
Coldest
2020
60°F avg
About This Date
September 11th in Round Rock, TX typically brings hot fall weather, with average highs around 91°F and lows near 68°F. Over 30 years of records, the warmest September 11th was in 2014 (87°F average), while the coldest was 2020 (60°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 11th dates historically, with the wettest September 11th recording 1.07" of rain.
Planning for September 11th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 64° | 80° | — | — |
| 2024 | 91° | 64° | 78° | — | — |
| 2023 | 99° | 74° | 86° | — | — |
| 2022 | 93° | 70° | 81° | — | — |
| 2021 | 92° | 61° | 76° | — | — |
| 2020coldest | 64° | 56° | 60° | — | — |
| 2019 | 99° | 71° | 85° | — | — |
| 2018 | 73° | 69° | 71° | 0.25" | — |
| 2017 | 83° | 60° | 71° | — | — |
| 2016 | 89° | 67° | 78° | 0.18" | — |
| 2015 | 91° | 72° | 81° | — | — |
| 2014warmest | 98° | 75° | 87° | — | — |
| 2013 | 92° | 72° | 82° | 0.03" | — |
| 2012 | 93° | 58° | 75° | — | — |
| 2011 | 97° | 61° | 79° | — | — |
| 2010 | 93° | 76° | 84° | — | — |
| 2009 | 85° | 70° | 77° | 0.51" | — |
| 2008 | 94° | 74° | 84° | — | — |
| 1982 | 100° | 68° | 84° | — | — |
| 1981 | 95° | 63° | 79° | — | — |
| 1980 | 94° | 66° | 80° | — | — |
| 1979 | 92° | 56° | 74° | — | — |
| 1978 | 85° | 68° | 76° | 1.07" | — |
| 1977 | 100° | 72° | 86° | — | — |
| 1976 | 88° | 59° | 73° | — | — |
| 1975 | 92° | 72° | 82° | — | — |
| 1974 | 89° | 72° | 80° | 0.41" | — |
| 1973 | 92° | 73° | 82° | — | — |
| 1972 | 96° | 72° | 84° | — | — |
| 1971 | 88° | 73° | 80° | — | — |
30 years of data from GEORGETOWN