Weather on August 31
Moreno Valley, CA
55 Years of Data
Avg High
95°F
Avg Low
61°F
Warmest
1998
91°F avg
Coldest
2000
66°F avg
About This Date
August 31st in Moreno Valley, CA typically brings hot summer weather, with average highs around 95°F and lows near 61°F — a 34°F daily swing. Over 55 years of records, the warmest August 31st was in 1998 (91°F average), while the coldest was 2000 (66°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 August 31st in Moreno Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 102° | 68° | 85° | — | — |
| 2024 | 97° | 61° | 79° | — | — |
| 2023 | 97° | 66° | 81° | — | — |
| 2022 | 108° | 69° | 88° | — | — |
| 2021 | 86° | 66° | 76° | — | — |
| 2020 | 91° | 57° | 74° | — | — |
| 2019 | 100° | 59° | 80° | — | — |
| 2018 | 92° | 54° | 73° | — | — |
| 2017 | 109° | 73° | 91° | — | — |
| 2016 | 101° | 64° | 82° | — | — |
| 2015 | 91° | 62° | 77° | — | — |
| 2014 | 96° | 62° | 79° | — | — |
| 2013 | 93° | 75° | 84° | — | — |
| 2012 | 94° | 66° | 80° | — | — |
| 2011 | 91° | 57° | 74° | — | — |
| 2010 | 86° | 54° | 70° | — | — |
| 2009 | 101° | 66° | 83° | — | — |
| 2008 | 86° | 65° | 75° | — | — |
| 2007 | 104° | 77° | 91° | — | — |
| 2006 | 97° | 62° | 79° | — | — |
| 2005 | 95° | 54° | 74° | — | — |
| 2004 | 100° | 57° | 79° | — | — |
| 2003 | 93° | 61° | 77° | — | — |
| 2002 | 101° | 62° | 81° | — | — |
| 2001 | 89° | 52° | 70° | — | — |
| 2000coldest | 79° | 53° | 66° | — | — |
| 1999 | 93° | 54° | 73° | — | — |
| 1998warmest | 106° | 76° | 91° | — | — |
| 1997 | 97° | 61° | 79° | — | — |
| 1996 | 99° | 66° | 82° | — | — |
| 1995 | 104° | 69° | 87° | — | — |
| 1994 | 89° | 59° | 74° | — | — |
| 1993 | 91° | 61° | 76° | — | — |
| 1992 | 81° | 58° | 69° | — | — |
| 1991 | 95° | 60° | 78° | — | — |
| 1990 | 94° | 61° | 77° | — | — |
| 1989 | 93° | 52° | 72° | — | — |
| 1988 | 101° | 68° | 84° | — | — |
| 1987 | 101° | 60° | 80° | — | — |
| 1986 | 94° | 57° | 75° | — | — |
| 1985 | 104° | 69° | 87° | — | — |
| 1984 | 101° | 69° | 85° | — | — |
| 1983 | 98° | 60° | 79° | — | — |
| 1982 | 94° | 61° | 77° | — | — |
| 1981 | 94° | 57° | 75° | — | — |
| 1980 | 90° | 50° | 70° | — | — |
| 1979 | 91° | 55° | 73° | — | — |
| 1978 | 98° | 58° | 78° | — | — |
| 1977 | 89° | 65° | 77° | — | — |
| 1976 | 102° | 67° | 84° | — | — |
| 1975 | 96° | 54° | 75° | — | — |
| 1974 | 101° | 59° | 80° | — | — |
| 1973 | 85° | 51° | 68° | — | — |
| 1972 | 95° | 57° | 76° | — | — |
| 1971 | 88° | 50° | 69° | — | — |
55 years of data from MARCH AFB