Weather on December 17
Round Rock, TX
55 Years of Data
About This Date
December 17th in Round Rock, TX typically brings mild winter weather, with average highs around 61°F and lows near 38°F. Over 30 years of records, the warmest December 17th was in 2021 (72°F average), while the coldest was 1979 (30°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 10% of December 17th dates historically, with the wettest December 17th recording 4.09" of rain.
Planning for December 17th in Round Rock, TX? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 41° | 49° | 0.18" | — |
| 2024 | 76° | 63° | 69° | — | — |
| 2023 | 62° | 34° | 48° | — | — |
| 2022 | 52° | 40° | 46° | — | — |
| 2021warmest | 75° | 68° | 72° | — | — |
| 2020 | 53° | 28° | 41° | — | — |
| 2019 | 55° | 33° | 44° | — | — |
| 2018 | 62° | 40° | 51° | — | — |
| 2017 | 50° | 42° | 46° | 4.09" | — |
| 2016 | 65° | 49° | 57° | — | — |
| 2015 | 60° | 34° | 47° | — | — |
| 2014 | 60° | 43° | 51° | — | — |
| 2013 | 67° | 32° | 49° | — | — |
| 2012 | 68° | 42° | 55° | — | — |
| 2011 | 54° | 43° | 48° | — | — |
| 2010 | 60° | 39° | 50° | — | — |
| 2009 | 46° | 36° | 41° | 1.04" | — |
| 2008 | 39° | 27° | 33° | — | — |
| 1982 | 70° | 40° | 55° | — | — |
| 1981 | 69° | 28° | 49° | — | — |
| 1980 | 74° | 38° | 56° | — | — |
| 1979coldest | 40° | 20° | 30° | — | — |
| 1978 | 60° | 35° | 48° | — | — |
| 1977 | 82° | 50° | 66° | — | — |
| 1976 | 66° | 31° | 48° | — | — |
| 1975 | 53° | 34° | 43° | — | — |
| 1974 | 65° | 30° | 47° | — | — |
| 1973 | — | 32° | — | — | — |
| 1972 | 55° | 16° | 35° | — | — |
| 1971 | 65° | 48° | 56° | — | — |
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.