Weather on September 26
Round Rock, TX
55 Years of Data
Avg High
90°F
Avg Low
65°F
Warmest
1977
86°F avg
Coldest
1975
61°F avg
About This Date
September 26th in Round Rock, TX typically brings hot fall weather, with average highs around 90°F and lows near 65°F — a 25°F daily swing. Over 30 years of records, the warmest September 26th was in 1977 (86°F average), while the coldest was 1975 (61°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 13% of September 26th dates historically, with the wettest September 26th recording 2.29" of rain.
Planning for September 26th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 61° | 75° | — | — |
| 2024 | 92° | 64° | 78° | — | — |
| 2023 | 93° | 72° | 82° | — | — |
| 2022 | 94° | 72° | 83° | — | — |
| 2021 | 88° | 58° | 73° | — | — |
| 2020 | 87° | 58° | 72° | — | — |
| 2019 | 97° | 73° | 85° | — | — |
| 2018 | 91° | 73° | 82° | — | — |
| 2017 | 88° | 73° | 80° | — | — |
| 2016 | 83° | 69° | 76° | 2.29" | — |
| 2015 | 91° | 65° | 78° | 0.15" | — |
| 2014 | 82° | 60° | 71° | — | — |
| 2013 | 95° | 63° | 79° | — | — |
| 2012 | 90° | 69° | 79° | — | — |
| 2011 | 104° | 67° | 85° | — | — |
| 2010 | 91° | 69° | 80° | — | — |
| 2009 | 82° | 58° | 70° | — | — |
| 2008 | 87° | 61° | 74° | — | — |
| 1982 | 88° | 53° | 70° | — | — |
| 1981 | 95° | 62° | 79° | — | — |
| 1980 | — | 66° | — | 0.79" | — |
| 1979 | 90° | 55° | 72° | — | — |
| 1978 | 84° | 57° | 71° | — | — |
| 1977warmest | 99° | 73° | 86° | — | — |
| 1976 | 95° | 70° | 82° | — | — |
| 1975coldest | 78° | 44° | 61° | — | — |
| 1974 | 80° | 57° | 69° | 0.05" | — |
| 1973 | 91° | 76° | 83° | — | — |
| 1972 | 91° | 73° | 82° | — | — |
| 1971 | 92° | 72° | 82° | — | — |
30 years of data from GEORGETOWN