Weather on March 18
Plano, TX
55 Years of Data
Avg High
71°F
Avg Low
50°F
Warmest
1982
75°F avg
Coldest
1988
42°F avg
About This Date
March 18th in Plano, TX typically brings pleasant spring weather, with average highs around 71°F and lows near 50°F. Over 56 years of records, the warmest March 18th was in 1982 (75°F average), while the coldest was 1988 (42°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 30% of March 18th dates historically, with the wettest March 18th recording 10.06" 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 March 18th in Plano, TX? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 75° | 49° | 62° | — | — |
| 2025 | 81° | 59° | 70° | — | — |
| 2024 | 57° | 45° | 51° | — | — |
| 2023 | 53° | 38° | 45° | — | — |
| 2022 | 65° | 46° | 55° | — | — |
| 2021 | 60° | 42° | 51° | — | — |
| 2020 | 79° | 65° | 72° | 3.73" | — |
| 2019 | 71° | 35° | 53° | — | — |
| 2018 | 76° | 56° | 66° | 0.43" | — |
| 2017 | 81° | 62° | 71° | — | — |
| 2016 | 65° | 49° | 57° | — | — |
| 2015 | 66° | 56° | 61° | 0.13" | — |
| 2014 | 80° | 48° | 64° | — | — |
| 2013 | 69° | 54° | 61° | — | — |
| 2012 | 75° | 66° | 71° | — | — |
| 2011 | 84° | 64° | 74° | — | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 78° | 63° | 70° | — | — |
| 2008 | 74° | 43° | 58° | 10.06" | — |
| 2007 | 71° | 58° | 64° | — | — |
| 2006 | 53° | 47° | 50° | 2.79" | — |
| 2005 | 76° | 46° | 61° | — | — |
| 2004 | 81° | 59° | 70° | — | — |
| 2003 | 64° | 50° | 57° | 1.55" | — |
| 2002 | 67° | 50° | 58° | 0.41" | — |
| 2001 | 55° | 38° | 46° | — | — |
| 2000 | 53° | 34° | 43° | — | — |
| 1999 | 69° | 55° | 62° | 0.13" | — |
| 1998 | 73° | 41° | 57° | 0.08" | — |
| 1997 | 73° | 50° | 62° | — | — |
| 1996 | 74° | 42° | 58° | 2.06" | — |
| 1995 | 79° | 50° | 64° | — | — |
| 1994 | 83° | 58° | 70° | — | — |
| 1993 | 62° | 44° | 53° | — | — |
| 1992 | 74° | 56° | 65° | 2.57" | — |
| 1991 | 70° | — | — | — | — |
| 1990 | 77° | 51° | 64° | — | — |
| 1989 | 81° | 49° | 65° | — | — |
| 1988coldest | 50° | 33° | 42° | 1.24" | — |
| 1987 | 66° | 43° | 54° | — | — |
| 1986 | 72° | 53° | 62° | 1.04" | — |
| 1985 | 70° | 35° | 52° | — | — |
| 1984 | 75° | 57° | 66° | 0.18" | — |
| 1983 | 59° | 39° | 49° | — | — |
| 1982warmest | 84° | 67° | 75° | — | — |
| 1981 | 74° | 42° | 58° | 0.05" | — |
| 1980 | 65° | 44° | 54° | — | — |
| 1979 | 69° | 64° | 67° | 0.03" | — |
| 1978 | 83° | 39° | 61° | — | — |
| 1977 | 78° | 56° | 67° | — | — |
| 1976 | 74° | 47° | 60° | — | — |
| 1975 | 65° | 50° | 57° | 0.28" | — |
| 1974 | 84° | 60° | 72° | — | — |
| 1973 | 74° | 48° | 61° | — | — |
| 1972 | 82° | 53° | 68° | — | — |
| 1971 | 74° | 57° | 65° | — | — |
56 years of data from RICHARDSON