Weather on May 21
Modesto, CA
55 Years of Data
Avg High
82°F
Avg Low
54°F
Warmest
2001
84°F avg
Coldest
1995
58°F avg
About This Date
May 21st in Modesto, CA typically brings warm spring weather, with average highs around 82°F and lows near 54°F — a 28°F daily swing. Over 55 years of records, the warmest May 21st was in 2001 (84°F average), while the coldest was 1995 (58°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 21st dates historically, with the wettest May 21st recording 2.21" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Modesto, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 55° | 73° | — | — |
| 2024 | 86° | 56° | 71° | — | — |
| 2023 | 87° | 53° | 70° | — | — |
| 2022 | 87° | 49° | 68° | — | — |
| 2021 | 73° | 51° | 62° | — | — |
| 2020 | 85° | 55° | 70° | — | — |
| 2019 | 68° | 51° | 60° | 0.2" | — |
| 2018 | 83° | 52° | 67° | — | — |
| 2017 | 98° | 60° | 79° | — | — |
| 2016 | 69° | 47° | 58° | — | — |
| 2015 | 74° | 54° | 64° | — | — |
| 2014 | 82° | 53° | 68° | — | — |
| 2013 | 84° | 57° | 71° | — | — |
| 2012 | 84° | 59° | 72° | — | — |
| 2011 | 81° | 54° | 67° | — | — |
| 2010 | 69° | 50° | 60° | — | — |
| 2009 | 93° | 57° | 75° | — | — |
| 2008 | 83° | 56° | 69° | — | — |
| 2007 | 89° | 58° | 73° | — | — |
| 2006 | 68° | 59° | 64° | 2.21" | — |
| 2005 | 85° | 52° | 68° | — | — |
| 2004 | 76° | 51° | 63° | — | — |
| 2003 | 95° | 58° | 76° | — | — |
| 2002 | 69° | 49° | 59° | — | — |
| 2001warmest | 100° | 68° | 84° | — | — |
| 2000 | 98° | 63° | 80° | — | — |
| 1999 | 84° | 49° | 66° | — | — |
| 1998 | 70° | 49° | 59° | — | — |
| 1997 | 89° | 56° | 72° | — | — |
| 1996 | 77° | 53° | 65° | — | — |
| 1995coldest | 67° | 50° | 58° | — | — |
| 1994 | 77° | 50° | 64° | — | — |
| 1993 | 77° | 55° | 66° | — | — |
| 1992 | 87° | 58° | 72° | — | — |
| 1991 | 84° | 53° | 69° | — | — |
| 1990 | 82° | 54° | 68° | — | — |
| 1989 | 74° | 49° | 61° | — | — |
| 1988 | 102° | 61° | 81° | — | — |
| 1987 | 76° | 52° | 64° | — | — |
| 1986 | 75° | 50° | 63° | — | — |
| 1985 | 90° | 55° | 72° | — | — |
| 1984 | 89° | 56° | 72° | — | — |
| 1983 | 95° | 60° | 78° | — | — |
| 1982 | 92° | 52° | 72° | — | — |
| 1981 | 80° | 48° | 64° | — | — |
| 1980 | 87° | 58° | 72° | — | — |
| 1979 | 79° | 56° | 67° | — | — |
| 1978 | 83° | 52° | 67° | — | — |
| 1977 | 82° | 48° | 65° | — | — |
| 1976 | 85° | 54° | 69° | — | — |
| 1975 | 81° | 46° | 63° | — | — |
| 1974 | 81° | 45° | 63° | — | — |
| 1973 | 85° | 52° | 68° | — | — |
| 1972 | 76° | 50° | 63° | — | — |
| 1971 | 73° | 48° | 61° | — | — |
55 years of data from MODESTO AP