Weather on May 20
Round Rock, TX
55 Years of Data
About This Date
May 20th in Round Rock, TX typically brings warm spring weather, with average highs around 87°F and lows near 66°F. Over 31 years of records, the warmest May 20th was in 2019 (82°F average), while the coldest was 2016 (65°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 20th dates historically, with the wettest May 20th recording 2.06" of rain.
Planning for May 20th in Round Rock, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 93° | 64° | 79° | 1.28" | — |
| 2025 | 84° | 75° | 80° | — | — |
| 2024 | 91° | 69° | 80° | — | — |
| 2023 | 90° | 66° | 78° | 0.06" | — |
| 2022 | 95° | 70° | 82° | — | — |
| 2021 | 70° | 61° | 65° | — | — |
| 2020 | 95° | 66° | 81° | — | — |
| 2019warmest | 91° | 74° | 82° | — | — |
| 2018 | 90° | 72° | 81° | — | — |
| 2017 | 90° | 64° | 77° | 1.56" | — |
| 2016coldest | 72° | 59° | 65° | 2.06" | — |
| 2015 | 85° | 72° | 78° | 0.01" | — |
| 2014 | 85° | 65° | 75° | — | — |
| 2013 | 91° | 71° | 81° | — | — |
| 2012 | 88° | 64° | 76° | — | — |
| 2011 | 77° | 73° | 75° | 0.04" | — |
| 2010 | 88° | 68° | 78° | — | — |
| 2009 | 82° | 52° | 67° | — | — |
| 2008 | 97° | 63° | 80° | — | — |
| 1982 | 89° | 70° | 79° | — | — |
| 1981 | 82° | 52° | 67° | — | — |
| 1980 | 89° | 58° | 73° | — | — |
| 1979 | 85° | 70° | 77° | — | — |
| 1978 | 89° | 69° | 79° | — | — |
| 1977 | 82° | 70° | 76° | 0.22" | — |
| 1976 | 75° | 63° | 69° | — | — |
| 1975 | 89° | 64° | 77° | 0.61" | — |
| 1974 | 88° | 70° | 79° | — | — |
| 1973 | 93° | 63° | 78° | — | — |
| 1972 | 87° | 59° | 73° | — | — |
| 1971 | 83° | 61° | 72° | 0.05" | — |
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
Most pleasant months in Round Rock, TX: February, March, April, October, November.
What to expect on May 20th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
May 20th outlook →