Weather on March 21
Oklahoma City, OK
55 Years of Data
Avg High
66°F
Avg Low
42°F
Warmest
2026
74°F avg
Coldest
1974
31°F avg
About This Date
March 21st in Oklahoma City, OK typically brings mild spring weather, with average highs around 66°F and lows near 42°F. Over 56 years of records, the warmest March 21st was in 2026 (74°F average), while the coldest was 1974 (31°F) — a 43°F range across recorded history. Precipitation has occurred on 18% of recorded March 21st dates, with snow falling 2% of the time. The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Oklahoma City, OK? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 97° | 51° | 74° | — | — |
| 2025 | 72° | 46° | 59° | — | — |
| 2024 | 63° | 54° | 58° | 2.62" | — |
| 2023 | 73° | 45° | 59° | 0.13" | — |
| 2022 | 63° | 51° | 57° | 3.73" | — |
| 2021 | 70° | 46° | 58° | — | — |
| 2020 | 55° | 29° | 42° | 0.46" | — |
| 2019 | 67° | 38° | 52° | — | — |
| 2018 | 67° | 32° | 49° | — | — |
| 2017 | 83° | 55° | 69° | — | — |
| 2016 | 69° | 33° | 51° | — | — |
| 2015 | 66° | 43° | 54° | — | — |
| 2014 | 73° | 49° | 61° | — | — |
| 2013 | 58° | 41° | 49° | — | — |
| 2012 | 65° | 44° | 54° | 0.08" | — |
| 2011 | 76° | 62° | 69° | — | — |
| 2010 | 45° | 26° | 36° | — | — |
| 2009 | 71° | 56° | 63° | — | — |
| 2008 | 70° | 43° | 56° | — | — |
| 2007 | 81° | 64° | 72° | — | — |
| 2006 | 41° | 35° | 38° | — | — |
| 2005 | 70° | 46° | 58° | 0.41" | — |
| 2004 | 57° | 45° | 51° | — | — |
| 2003 | 59° | 39° | 49° | — | — |
| 2002 | 43° | 26° | 34° | — | — |
| 2001 | 73° | 41° | 57° | — | — |
| 2000 | 61° | 50° | 55° | 0.1" | — |
| 1999 | 68° | 37° | 53° | — | — |
| 1998 | 56° | 27° | 41° | — | — |
| 1997 | 89° | 55° | 72° | — | — |
| 1996 | 65° | 26° | 45° | — | — |
| 1995 | 82° | 44° | 63° | — | — |
| 1994 | 66° | 42° | 54° | — | — |
| 1993 | 61° | 40° | 50° | — | — |
| 1992 | 69° | 45° | 57° | — | — |
| 1991 | 80° | 54° | 67° | — | — |
| 1990 | 75° | 45° | 60° | — | — |
| 1989 | 49° | 30° | 39° | — | — |
| 1988 | 81° | 46° | 63° | — | — |
| 1987 | 68° | 48° | 58° | — | — |
| 1986 | 59° | 31° | 45° | — | — |
| 1985 | 49° | 45° | 47° | 0.2" | — |
| 1984 | 63° | 39° | 51° | — | — |
| 1983 | 47° | 25° | 36° | — | — |
| 1982 | 57° | 37° | 47° | — | — |
| 1981 | 67° | 47° | 57° | — | — |
| 1980 | 63° | 29° | 46° | — | — |
| 1979 | 61° | 45° | 53° | — | — |
| 1978 | 74° | 43° | 58° | — | — |
| 1977 | 69° | 37° | 53° | — | — |
| 1976 | 60° | 37° | 49° | — | — |
| 1975 | 80° | 56° | 68° | — | — |
| 1974coldest | 43° | 20° | 31° | 0.64" | 1" |
| 1973 | 55° | 36° | 45° | — | — |
| 1972 | 78° | 48° | 63° | 1.22" | — |
| 1971 | 72° | 51° | 61° | — | — |
56 years of data from OKLAHOMA CITY PENN AVE