Weather on March 18
Round Rock, TX
55 Years of Data
About This Date
March 18th in Round Rock, TX typically brings pleasant spring weather, with average highs around 77°F and lows near 53°F. Over 31 years of records, the warmest March 18th was in 1982 (78°F average), while the coldest was 1980 (47°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 19% of March 18th dates historically.
Planning for March 18th in Round Rock, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 67° | 30° | 48° | — | — |
| 2025 | 84° | 42° | 63° | — | — |
| 2024 | 63° | 54° | 58° | — | — |
| 2023 | 58° | 39° | 48° | — | — |
| 2022 | 69° | 48° | 59° | — | — |
| 2021 | 76° | 43° | 59° | — | — |
| 2020 | 81° | 67° | 74° | — | — |
| 2019 | 68° | 43° | 55° | — | — |
| 2018 | 82° | 66° | 74° | 0.38" | — |
| 2017 | 80° | 63° | 71° | — | — |
| 2016 | 77° | 65° | 71° | — | — |
| 2015 | 73° | 54° | 63° | 0.28" | — |
| 2014 | 68° | 40° | 54° | — | — |
| 2013 | 83° | 63° | 73° | — | — |
| 2012 | 79° | 67° | 73° | — | — |
| 2011 | 83° | 64° | 73° | — | — |
| 2010 | 72° | 44° | 58° | — | — |
| 2009 | 84° | 47° | 65° | — | — |
| 2008 | 78° | 65° | 71° | 0.05" | — |
| 1982warmest | 87° | 68° | 78° | — | — |
| 1981 | 72° | 53° | 62° | — | — |
| 1980coldest | 68° | 26° | 47° | — | — |
| 1979 | 78° | 65° | 71° | 0.13" | — |
| 1978 | 80° | 42° | 61° | — | — |
| 1977 | 83° | 56° | 69° | 0.03" | — |
| 1976 | 79° | 47° | 63° | — | — |
| 1975 | 75° | 50° | 63° | 0.18" | — |
| 1974 | 81° | 63° | 72° | — | — |
| 1973 | 76° | 49° | 62° | — | — |
| 1972 | 89° | 59° | 74° | — | — |
| 1971 | 84° | 61° | 72° | — | — |
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.