Weather on May 18
Modesto, CA
55 Years of Data
Avg High
83°F
Avg Low
54°F
Warmest
2008
86°F avg
Coldest
1991
50°F avg
About This Date
May 18th in Modesto, CA typically brings warm spring weather, with average highs around 83°F and lows near 54°F — a 29°F daily swing. Over 55 years of records, the warmest May 18th was in 2008 (86°F average), while the coldest was 1991 (50°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 18th dates historically, with the wettest May 18th recording 1.37" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 18th in Modesto, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 54° | 68° | — | — |
| 2024 | 84° | 55° | 70° | — | — |
| 2023 | 89° | 57° | 73° | — | — |
| 2022 | 94° | 58° | 76° | — | — |
| 2021 | 85° | 53° | 69° | — | — |
| 2020 | 71° | 55° | 63° | 0.03" | — |
| 2019 | 65° | 47° | 56° | 0.05" | — |
| 2018 | 84° | 54° | 69° | — | — |
| 2017 | 87° | 54° | 70° | — | — |
| 2016 | 98° | 61° | 79° | — | — |
| 2015 | 75° | 55° | 65° | — | — |
| 2014 | 79° | 56° | 67° | — | — |
| 2013 | 83° | 51° | 67° | — | — |
| 2012 | 85° | 54° | 69° | — | — |
| 2011 | 69° | 49° | 59° | 0.43" | — |
| 2010 | 76° | 57° | 66° | — | — |
| 2009 | 101° | 70° | 85° | — | — |
| 2008warmest | 105° | 67° | 86° | — | — |
| 2007 | 84° | 56° | 70° | — | — |
| 2006 | 98° | 63° | 80° | — | — |
| 2005 | 77° | 58° | 67° | — | — |
| 2004 | 76° | 52° | 64° | — | — |
| 2003 | 78° | 53° | 66° | — | — |
| 2002 | 79° | 53° | 66° | — | — |
| 2001 | 93° | 58° | 75° | — | — |
| 2000 | 85° | 51° | 68° | — | — |
| 1999 | 80° | 53° | 67° | — | — |
| 1998 | 76° | 50° | 63° | — | — |
| 1997 | 99° | 72° | 85° | — | — |
| 1996 | 74° | 60° | 67° | — | — |
| 1995 | 85° | 54° | 69° | — | — |
| 1994 | 71° | 51° | 61° | 1.37" | — |
| 1993 | 87° | 56° | 71° | — | — |
| 1992 | 85° | 58° | 71° | — | — |
| 1991coldest | 54° | 47° | 50° | — | — |
| 1990 | 76° | 48° | 62° | — | — |
| 1989 | 79° | 52° | 65° | — | — |
| 1988 | 83° | 50° | 66° | — | — |
| 1987 | 82° | 52° | 67° | — | — |
| 1986 | 96° | 58° | 77° | — | — |
| 1985 | 79° | 44° | 61° | — | — |
| 1984 | 85° | 51° | 68° | — | — |
| 1983 | 90° | 55° | 72° | — | — |
| 1982 | 80° | 47° | 63° | — | — |
| 1981 | 77° | 53° | 65° | 0.2" | — |
| 1980 | 92° | 55° | 73° | — | — |
| 1979 | 97° | 61° | 79° | — | — |
| 1978 | 91° | 55° | 73° | — | — |
| 1977 | 67° | 44° | 55° | 0.1" | — |
| 1976 | 77° | 46° | 62° | — | — |
| 1975 | 91° | 56° | 73° | — | — |
| 1974 | 66° | 39° | 53° | — | — |
| 1973 | 99° | 64° | 81° | — | — |
| 1972 | 77° | 47° | 62° | — | — |
| 1971 | 83° | 47° | 65° | — | — |
55 years of data from MODESTO AP