Weather on May 15
Round Rock, TX
55 Years of Data
Avg High
85°F
Avg Low
62°F
Warmest
2025
84°F avg
Coldest
2014
58°F avg
About This Date
May 15th in Round Rock, TX typically brings warm spring weather, with average highs around 85°F and lows near 62°F. Over 30 years of records, the warmest May 15th was in 2025 (84°F average), while the coldest was 2014 (58°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 27% of May 15th dates historically, with the wettest May 15th recording 3.81" of rain.
Planning for May 15th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 98° | 70° | 84° | — | — |
| 2024 | 90° | 59° | 74° | — | — |
| 2023 | 81° | 63° | 72° | 0.53" | — |
| 2022 | 94° | 69° | 81° | — | — |
| 2021 | 83° | 58° | 70° | — | — |
| 2020 | 90° | 71° | 80° | — | — |
| 2019 | 80° | 60° | 70° | — | — |
| 2018 | 90° | 70° | 80° | — | — |
| 2017 | 90° | 59° | 74° | — | — |
| 2016 | 79° | 58° | 68° | 1.42" | — |
| 2015 | 82° | 69° | 76° | 0.1" | — |
| 2014coldest | 72° | 44° | 58° | — | — |
| 2013 | 85° | 61° | 73° | 0.99" | — |
| 2012 | 84° | 62° | 73° | 1.45" | — |
| 2011 | 79° | 53° | 66° | — | — |
| 2010 | 75° | 62° | 69° | 3.81" | — |
| 2009 | 89° | 71° | 80° | — | — |
| 2008 | 87° | 64° | 76° | 0.53" | — |
| 1982 | 82° | 65° | 73° | — | — |
| 1981 | 82° | 55° | 69° | — | — |
| 1980 | 81° | 67° | 74° | 0.18" | — |
| 1979 | 86° | 59° | 73° | — | — |
| 1978 | 95° | 60° | 78° | — | — |
| 1977 | 84° | 70° | 77° | — | — |
| 1976 | 82° | 50° | 66° | — | — |
| 1975 | 80° | 58° | 69° | — | — |
| 1974 | 91° | 74° | 82° | — | — |
| 1973 | 77° | 54° | 65° | — | — |
| 1972 | 85° | 60° | 72° | — | — |
| 1971 | 90° | 50° | 70° | — | — |
30 years of data from GEORGETOWN