Weather on August 18
Richardson, TX
55 Years of Data
Avg High
95°F
Avg Low
76°F
Warmest
2000
94°F avg
Coldest
1981
74°F avg
About This Date
August 18th in Richardson, TX typically brings hot summer weather, with average highs around 95°F and lows near 76°F. Over 55 years of records, the warmest August 18th was in 2000 (94°F average), while the coldest was 1981 (74°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 18th dates historically, with the wettest August 18th recording 1.85" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for August 18th in Richardson, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 100° | 80° | 90° | — | — |
| 2024 | 106° | 82° | 94° | — | — |
| 2023 | 108° | 81° | 94° | — | — |
| 2022 | 84° | 73° | 79° | 0.33" | — |
| 2021 | 81° | 72° | 76° | 1.85" | — |
| 2020 | 93° | 74° | 83° | — | — |
| 2019 | 97° | 79° | 88° | — | — |
| 2018 | 99° | 71° | 85° | 1.83" | — |
| 2017 | 89° | 75° | 82° | — | — |
| 2016 | 88° | 73° | 80° | 0.66" | — |
| 2015 | 96° | 77° | 87° | — | — |
| 2014 | 91° | 73° | 82° | — | — |
| 2013 | 91° | 64° | 78° | — | — |
| 2012 | 84° | 68° | 76° | 0.71" | — |
| 2011 | 105° | 82° | 94° | — | — |
| 2010 | 95° | 78° | 87° | 0.1" | — |
| 2009 | 95° | 77° | 86° | — | — |
| 2008 | 78° | 72° | 75° | 0.97" | — |
| 2007 | 88° | 74° | 81° | — | — |
| 2006 | 103° | 81° | 92° | — | — |
| 2005 | 99° | 80° | 89° | — | — |
| 2004 | 93° | 71° | 82° | — | — |
| 2003 | 102° | 81° | 91° | — | — |
| 2002 | 99° | 78° | 88° | — | — |
| 2001 | 95° | 76° | 85° | — | — |
| 2000warmest | 104° | 85° | 94° | — | — |
| 1999 | 101° | 81° | 91° | — | — |
| 1998 | 93° | 77° | 85° | — | — |
| 1997 | 98° | 81° | 89° | — | — |
| 1996 | 92° | 75° | 83° | — | — |
| 1995 | 100° | 78° | 89° | — | — |
| 1994 | 102° | 78° | 90° | — | — |
| 1993 | 101° | 82° | 91° | — | — |
| 1992 | 82° | 66° | 74° | 0.23" | — |
| 1991 | 98° | 77° | 88° | — | — |
| 1990 | 98° | 79° | 88° | — | — |
| 1989 | 84° | 69° | 77° | 0.99" | — |
| 1988 | 98° | 77° | 88° | — | — |
| 1987 | 103° | 79° | 91° | — | — |
| 1986 | 101° | 81° | 91° | — | — |
| 1985 | 103° | 82° | 92° | — | — |
| 1984 | 104° | 76° | 90° | — | — |
| 1983 | 90° | 71° | 80° | 1.5" | — |
| 1982 | 94° | 79° | 86° | — | — |
| 1981coldest | 77° | 71° | 74° | 0.03" | — |
| 1980 | 100° | 77° | 89° | — | — |
| 1979 | 92° | 74° | 83° | — | — |
| 1978 | 102° | 76° | 89° | — | — |
| 1977 | 92° | 76° | 84° | 0.53" | — |
| 1976 | 94° | 77° | 85° | — | — |
| 1975 | 99° | 75° | 87° | — | — |
| 1974 | 99° | 79° | 89° | — | — |
| 1973 | 90° | 73° | 81° | — | — |
| 1972 | 97° | 77° | 87° | — | — |
| 1971 | 89° | 75° | 82° | — | — |
55 years of data from RICHARDSON