Weather on May 21
Oklahoma City, OK
55 Years of Data
Avg High
81°F
Avg Low
61°F
Warmest
2005
85°F avg
Coldest
2015
58°F avg
About This Date
May 21st in Oklahoma City, OK typically brings warm spring weather, with average highs around 81°F and lows near 61°F. Over 38 years of records, the warmest May 21st was in 2005 (85°F average), while the coldest was 2015 (58°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 32% of May 21st dates historically, with the wettest May 21st recording 7.92" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Oklahoma City, OK? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 55° | 71° | — | — |
| 2024 | 91° | 72° | 81° | — | — |
| 2023 | 76° | 53° | 64° | — | — |
| 2022 | 70° | 53° | 61° | 0.13" | — |
| 2021 | 84° | 68° | 76° | 0.05" | — |
| 2020 | 80° | 69° | 75° | — | — |
| 2019 | 76° | 63° | 69° | 3.66" | — |
| 2018 | 82° | 58° | 70° | — | — |
| 2017 | 78° | 47° | 62° | — | — |
| 2016 | 81° | 64° | 72° | — | — |
| 2015coldest | 68° | 49° | 58° | — | — |
| 2014 | 91° | 71° | 81° | — | — |
| 2013 | 69° | 57° | 63° | 0.76" | — |
| 2012 | 82° | 60° | 71° | 1.35" | — |
| 2011 | 88° | 61° | 74° | — | — |
| 2010 | 83° | 55° | 69° | — | — |
| 2009 | 82° | 59° | 71° | — | — |
| 2008 | 81° | 58° | 69° | — | — |
| 2007 | 77° | 64° | 71° | — | — |
| 2006 | 91° | 73° | 82° | — | — |
| 2005warmest | 96° | 73° | 85° | — | — |
| 2004 | 87° | 70° | 78° | — | — |
| 2003 | 70° | 53° | 61° | — | — |
| 2002 | 77° | 56° | 66° | — | — |
| 2001 | 69° | 49° | 59° | 0.08" | — |
| 2000 | 87° | 59° | 73° | 0.74" | — |
| 1999 | 81° | 65° | 73° | — | — |
| 1998 | 88° | 70° | 79° | — | — |
| 1997 | 75° | 61° | 68° | — | — |
| 1979 | 83° | 63° | 73° | 2.46" | — |
| 1978 | 80° | 64° | 72° | 5.54" | — |
| 1977 | 74° | 58° | 66° | 7.92" | — |
| 1976 | 79° | 60° | 69° | — | — |
| 1975 | 76° | 64° | 70° | — | — |
| 1974 | 87° | 65° | 76° | 0.3" | — |
| 1973 | 92° | 69° | 80° | 0.13" | — |
| 1972 | 88° | 64° | 76° | — | — |
| 1971 | 83° | 59° | 71° | — | — |
38 years of data from OKLAHOMA CITY PENN AVE