Weather on June 21
Modesto, CA
55 Years of Data
Avg High
92°F
Avg Low
59°F
Warmest
2017
89°F avg
Coldest
1991
64°F avg
About This Date
June 21st in Modesto, CA typically brings hot summer weather, with average highs around 92°F and lows near 59°F — a 33°F daily swing. Over 55 years of records, the warmest June 21st was in 2017 (89°F average), while the coldest was 1991 (64°F) — a 25°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for June 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 | 80° | 56° | 68° | — | — |
| 2024 | 96° | 59° | 78° | — | — |
| 2023 | 83° | 53° | 68° | — | — |
| 2022 | 100° | 63° | 81° | — | — |
| 2021 | 91° | 60° | 76° | — | — |
| 2020 | 97° | 66° | 81° | — | — |
| 2019 | 88° | 58° | 73° | — | — |
| 2018 | 94° | 58° | 76° | — | — |
| 2017warmest | 106° | 72° | 89° | — | — |
| 2016 | 102° | 62° | 82° | — | — |
| 2015 | 93° | 65° | 79° | — | — |
| 2014 | 87° | 62° | 75° | — | — |
| 2013 | 90° | 59° | 74° | — | — |
| 2012 | 87° | 57° | 72° | — | — |
| 2011 | 104° | 65° | 84° | — | — |
| 2010 | 89° | 55° | 72° | — | — |
| 2009 | 83° | 52° | 67° | — | — |
| 2008 | 106° | 71° | 88° | — | — |
| 2007 | 95° | 60° | 78° | — | — |
| 2006 | 100° | 65° | 82° | — | — |
| 2005 | 84° | 57° | 71° | — | — |
| 2004 | 91° | 57° | 74° | — | — |
| 2003 | 82° | 54° | 68° | — | — |
| 2002 | 83° | 53° | 68° | — | — |
| 2001 | 107° | 64° | 86° | — | — |
| 2000 | 101° | 64° | 82° | — | — |
| 1999 | 90° | 62° | 76° | — | — |
| 1998 | 86° | 55° | 71° | — | — |
| 1997 | 86° | 56° | 71° | — | — |
| 1996 | 82° | 53° | 68° | — | — |
| 1995 | 88° | 58° | 73° | — | — |
| 1994 | 90° | 54° | 72° | — | — |
| 1993 | 81° | 61° | 71° | — | — |
| 1992 | 99° | 66° | 82° | — | — |
| 1991coldest | 77° | 51° | 64° | — | — |
| 1990 | 99° | 70° | 84° | — | — |
| 1989 | 98° | 63° | 80° | — | — |
| 1988 | 95° | 62° | 79° | — | — |
| 1987 | 81° | 59° | 70° | — | — |
| 1986 | 96° | 59° | 78° | — | — |
| 1985 | 95° | 60° | 78° | — | — |
| 1984 | 87° | 55° | 71° | — | — |
| 1983 | 90° | 57° | 73° | — | — |
| 1982 | 86° | 56° | 71° | — | — |
| 1981 | 105° | 70° | 87° | — | — |
| 1980 | 85° | 55° | 70° | — | — |
| 1979 | 89° | 52° | 70° | — | — |
| 1978 | 90° | 54° | 72° | — | — |
| 1977 | 99° | 63° | 81° | — | — |
| 1976 | 80° | 52° | 66° | — | — |
| 1975 | 86° | 52° | 69° | — | — |
| 1974 | 94° | 60° | 77° | — | — |
| 1973 | 109° | 65° | 87° | — | — |
| 1972 | 94° | 55° | 74° | — | — |
| 1971 | 99° | 59° | 79° | — | — |
55 years of data from MODESTO AP