Weather on August 20
Moreno Valley, CA
55 Years of Data
Avg High
93°F
Avg Low
61°F
Warmest
1986
89°F avg
Coldest
2002
67°F avg
About This Date
August 20th in Moreno Valley, CA typically brings hot summer weather, with average highs around 93°F and lows near 61°F — a 32°F daily swing. Over 55 years of records, the warmest August 20th was in 1986 (89°F average), while the coldest was 2002 (67°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 5% of August 20th dates historically, with the wettest August 20th recording 5" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Moreno Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 102° | 62° | 82° | — | — |
| 2024 | 103° | 59° | 81° | — | — |
| 2023 | 79° | 62° | 70° | 5" | — |
| 2022 | 93° | 67° | 80° | — | — |
| 2021 | 86° | 61° | 73° | — | — |
| 2020 | 104° | 71° | 88° | — | — |
| 2019 | 96° | 56° | 76° | — | — |
| 2018 | 94° | 66° | 80° | — | — |
| 2017 | 90° | 56° | 73° | — | — |
| 2016 | 93° | 61° | 77° | — | — |
| 2015 | 88° | 62° | 75° | — | — |
| 2014 | 80° | 62° | 71° | 0.69" | — |
| 2013 | 96° | 69° | 83° | — | — |
| 2012 | 98° | 68° | 83° | — | — |
| 2011 | 84° | 58° | 71° | — | — |
| 2010 | 95° | 66° | 81° | — | — |
| 2009 | 90° | 59° | 74° | — | — |
| 2008 | 87° | 57° | 72° | — | — |
| 2007 | 98° | 62° | 80° | — | — |
| 2006 | 93° | 57° | 75° | — | — |
| 2005 | 98° | 57° | 78° | — | — |
| 2004 | 88° | 59° | 73° | — | — |
| 2003 | 93° | 66° | 80° | — | — |
| 2002coldest | 77° | 57° | 67° | — | — |
| 2001 | 90° | 59° | 74° | — | — |
| 2000 | 92° | 53° | 72° | — | — |
| 1999 | 99° | 66° | 82° | — | — |
| 1998 | 95° | 59° | 77° | — | — |
| 1997 | 96° | 67° | 81° | — | — |
| 1996 | 97° | 58° | 77° | — | — |
| 1995 | 96° | 66° | 81° | — | — |
| 1994 | 96° | 64° | 80° | — | — |
| 1993 | 92° | 55° | 73° | — | — |
| 1992 | 105° | 72° | 88° | — | — |
| 1991 | 96° | 59° | 78° | — | — |
| 1990 | 85° | 58° | 71° | — | — |
| 1989 | 80° | 59° | 70° | — | — |
| 1988 | 91° | 61° | 76° | — | — |
| 1987 | 95° | 60° | 78° | — | — |
| 1986warmest | 107° | 71° | 89° | — | — |
| 1985 | 94° | 57° | 75° | — | — |
| 1984 | 88° | 69° | 78° | — | — |
| 1983 | 78° | 63° | 70° | 0.05" | — |
| 1982 | 103° | 65° | 84° | — | — |
| 1981 | 100° | 61° | 80° | — | — |
| 1980 | 88° | 52° | 70° | — | — |
| 1979 | 88° | 61° | 74° | — | — |
| 1978 | 97° | 55° | 76° | — | — |
| 1977 | 98° | 70° | 84° | — | — |
| 1976 | 89° | 55° | 72° | — | — |
| 1975 | 85° | 56° | 70° | — | — |
| 1974 | 85° | 59° | 72° | — | — |
| 1973 | 94° | 70° | 82° | — | — |
| 1972 | 95° | 46° | 71° | — | — |
| 1971 | 91° | 59° | 75° | — | — |
55 years of data from MARCH AFB