Weather on September 27
Round Rock, TX
55 Years of Data
About This Date
September 27th in Round Rock, TX typically brings warm fall weather, with average highs around 88°F and lows near 64°F. Over 30 years of records, the warmest September 27th was in 1977 (87°F average), while the coldest was 2016 (67°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 20% of September 27th dates historically, with the wettest September 27th recording 12.6" of rain.
Planning for September 27th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 61° | 76° | — | — |
| 2024 | 87° | 59° | 73° | — | — |
| 2023 | 94° | 70° | 82° | — | — |
| 2022 | 91° | 57° | 74° | — | — |
| 2021 | 89° | 60° | 75° | — | — |
| 2020 | 87° | 66° | 77° | — | — |
| 2019 | 96° | 73° | 85° | — | — |
| 2018 | 84° | 60° | 72° | — | — |
| 2017 | 80° | 70° | 75° | 4.32" | — |
| 2016coldest | 70° | 64° | 67° | 0.13" | — |
| 2015 | 91° | 63° | 77° | — | — |
| 2014 | 82° | 65° | 73° | — | — |
| 2013 | 91° | 63° | 77° | — | — |
| 2012 | 91° | 66° | 79° | — | — |
| 2011 | 102° | 67° | 84° | — | — |
| 2010 | 85° | 54° | 69° | — | — |
| 2009 | 89° | 63° | 76° | — | — |
| 2008 | 88° | 59° | 73° | — | — |
| 1982 | 93° | 61° | 77° | — | — |
| 1981 | 96° | 64° | 80° | — | — |
| 1980 | 79° | 65° | 72° | 1.32" | — |
| 1979 | 92° | 59° | 75° | — | — |
| 1978 | 77° | 61° | 69° | — | — |
| 1977warmest | 102° | 71° | 87° | — | — |
| 1976 | 93° | 64° | 79° | 0.69" | — |
| 1975 | 87° | — | — | — | — |
| 1974 | 86° | 57° | 72° | — | — |
| 1973 | 86° | 66° | 76° | 12.6" | — |
| 1972 | 86° | 70° | 78° | 1.14" | — |
| 1971 | 89° | 72° | 80° | — | — |
Round Rock, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Round Rock, TX Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Round Rock, TX Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Round Rock, TX
Round Rock, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.