Weather on May 18
Plano, TX
55 Years of Data
Avg High
84°F
Avg Low
64°F
Warmest
2022
82°F avg
Coldest
2016
59°F avg
About This Date
May 18th in Plano, TX typically brings warm spring weather, with average highs around 84°F and lows near 64°F. Over 55 years of records, the warmest May 18th was in 2022 (82°F average), while the coldest was 2016 (59°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 24% of May 18th dates historically, with the wettest May 18th recording 9.4" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Plano, TX? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 75° | 80° | 0.18" | — |
| 2024 | 90° | 67° | 78° | — | — |
| 2023 | 86° | 68° | 77° | — | — |
| 2022warmest | 93° | 72° | 82° | — | — |
| 2021 | 70° | 62° | 66° | 0.76" | — |
| 2020 | 89° | 61° | 75° | — | — |
| 2019 | 78° | 62° | 70° | 9.4" | — |
| 2018 | 91° | 69° | 80° | — | — |
| 2017 | 89° | 74° | 81° | — | — |
| 2016coldest | 62° | 55° | 59° | 0.08" | — |
| 2015 | 90° | 66° | 78° | — | — |
| 2014 | 82° | 63° | 72° | — | — |
| 2013 | 91° | 72° | 81° | — | — |
| 2012 | 87° | 66° | 77° | — | — |
| 2011 | 84° | 65° | 74° | — | — |
| 2010 | 83° | 64° | 73° | — | — |
| 2009 | 76° | 50° | 63° | — | — |
| 2008 | 87° | 64° | 76° | — | — |
| 2007 | 79° | 55° | 67° | — | — |
| 2006 | 92° | 59° | 75° | — | — |
| 2005 | 84° | 65° | 74° | — | — |
| 2004 | 89° | 72° | 80° | — | — |
| 2003 | 77° | 59° | 68° | — | — |
| 2002 | 71° | 51° | 61° | — | — |
| 2001 | 87° | 68° | 78° | 0.08" | — |
| 2000 | 87° | 59° | 73° | 2.06" | — |
| 1999 | 79° | 57° | 68° | — | — |
| 1998 | 92° | 64° | 78° | — | — |
| 1997 | 87° | 63° | 75° | — | — |
| 1996 | 91° | — | — | — | — |
| 1995 | 83° | 60° | 71° | 0.69" | — |
| 1994 | 82° | 60° | 71° | — | — |
| 1993 | 90° | 63° | 76° | — | — |
| 1992 | 80° | 64° | 72° | 2.79" | — |
| 1991 | 85° | 70° | 77° | 0.13" | — |
| 1990 | 82° | 64° | 73° | — | — |
| 1989 | 85° | 70° | 77° | 0.18" | — |
| 1988 | 90° | 62° | 76° | — | — |
| 1987 | 88° | 68° | 78° | — | — |
| 1986 | 64° | 57° | 61° | 3" | — |
| 1985 | 80° | 62° | 71° | — | — |
| 1984 | 85° | 65° | 75° | — | — |
| 1983 | 79° | 62° | 70° | — | — |
| 1982 | 80° | 63° | 71° | 0.76" | — |
| 1981 | 84° | 67° | 75° | 0.71" | — |
| 1980 | 89° | 64° | 77° | — | — |
| 1979 | 86° | 67° | 76° | — | — |
| 1978 | 89° | 72° | 80° | — | — |
| 1977 | 83° | 66° | 74° | — | — |
| 1976 | 78° | 46° | 62° | — | — |
| 1975 | 86° | 60° | 73° | — | — |
| 1974 | 89° | 74° | 81° | — | — |
| 1973 | 89° | 55° | 72° | — | — |
| 1972 | 89° | 60° | 75° | — | — |
| 1971 | 86° | 66° | 76° | — | — |
55 years of data from RICHARDSON