Weather on April 18
Sunnyvale, CA
55 Years of Data
Avg High
69°F
Avg Low
49°F
Warmest
2016
70°F avg
Coldest
2004
51°F avg
About This Date
April 18th in Sunnyvale, CA typically brings mild spring weather, with average highs around 69°F and lows near 49°F. Over 55 years of records, the warmest April 18th was in 2016 (70°F average), while the coldest was 2004 (51°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 18% of April 18th dates historically, with the wettest April 18th recording 0.86" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for April 18th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 54° | 59° | — | — |
| 2024 | 78° | 56° | 67° | — | — |
| 2023 | 61° | 46° | 53° | 0.18" | — |
| 2022 | 75° | 42° | 59° | — | — |
| 2021 | 83° | 47° | 65° | — | — |
| 2020 | 69° | 54° | 61° | — | — |
| 2019 | 83° | 51° | 67° | — | — |
| 2018 | 61° | 48° | 54° | — | — |
| 2017 | 68° | 51° | 60° | 0.03" | — |
| 2016warmest | 86° | 54° | 70° | — | — |
| 2015 | 71° | 53° | 62° | — | — |
| 2014 | 69° | 52° | 60° | — | — |
| 2013 | 77° | 46° | 62° | — | — |
| 2012 | 70° | 49° | 59° | — | — |
| 2011 | 65° | 56° | 60° | — | — |
| 2010 | 76° | 47° | 61° | — | — |
| 2009 | 78° | 50° | 64° | — | — |
| 2008 | 64° | 50° | 57° | — | — |
| 2007 | 61° | 45° | 53° | — | — |
| 2006 | 67° | 43° | 55° | — | — |
| 2005 | 69° | 46° | 58° | — | — |
| 2004coldest | 61° | 42° | 51° | 0.66" | — |
| 2003 | 66° | 48° | 57° | — | — |
| 2002 | 62° | 46° | 54° | — | — |
| 2001 | 69° | 49° | 59° | — | — |
| 2000 | 65° | 45° | 55° | — | — |
| 1999 | 67° | 52° | 59° | — | — |
| 1998 | 72° | 44° | 58° | — | — |
| 1997 | 78° | 54° | 66° | — | — |
| 1996 | 65° | 44° | 54° | 0.71" | — |
| 1995 | 62° | 47° | 54° | 0.51" | — |
| 1994 | 73° | 55° | 64° | — | — |
| 1993 | 66° | 51° | 59° | 0.13" | — |
| 1992 | 79° | 53° | 66° | — | — |
| 1991 | 63° | 47° | 55° | — | — |
| 1990 | 66° | 54° | 60° | — | — |
| 1989 | 74° | 53° | 63° | — | — |
| 1988 | 70° | 53° | 61° | — | — |
| 1987 | 64° | 50° | 57° | — | — |
| 1986 | 73° | 47° | 60° | — | — |
| 1985 | 67° | 49° | 58° | — | — |
| 1984 | 63° | 48° | 55° | 0.86" | — |
| 1983 | 66° | 56° | 61° | 0.36" | — |
| 1982 | 75° | 48° | 62° | — | — |
| 1981 | 59° | 52° | 55° | 0.33" | — |
| 1980 | 71° | 48° | 60° | — | — |
| 1979 | 62° | 44° | 53° | — | — |
| 1978 | 66° | 47° | 56° | — | — |
| 1977 | 80° | 45° | 62° | — | — |
| 1976 | 70° | 47° | 58° | 0.03" | — |
| 1975 | 61° | 48° | 54° | — | — |
| 1974 | 58° | 48° | 53° | — | — |
| 1973 | 60° | 47° | 53° | — | — |
| 1972 | 65° | 46° | 55° | — | — |
| 1971 | 65° | 46° | 55° | — | — |
55 years of data from MOFFETT FED AIRFIELD