Weather on September 27
San Leandro, CA
55 Years of Data
About This Date
September 27th in San Leandro, CA typically brings pleasant fall weather, with average highs around 76°F and lows near 58°F. Over 54 years of records, the warmest September 27th was in 2008 (138°F average), while the coldest was 1971 (56°F) — a 82°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 27th dates historically, with the wettest September 27th recording 0.81" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for September 27th in San Leandro, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 65° | 52° | 58° | — | — |
| 2025 | 69° | 57° | 63° | — | — |
| 2024 | 93° | 64° | 79° | — | — |
| 2023 | 76° | 54° | 65° | — | — |
| 2022 | 71° | 51° | 61° | — | — |
| 2021 | 64° | 53° | 59° | — | — |
| 2020 | 89° | 64° | 77° | — | — |
| 2019 | 60° | 51° | 56° | — | — |
| 2018 | 76° | 51° | 63° | — | — |
| 2017 | 88° | 68° | 78° | — | — |
| 2016 | 89° | 67° | 78° | — | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 68° | 54° | 61° | — | — |
| 2013 | 75° | 56° | 65° | — | — |
| 2012 | 82° | 55° | 69° | — | — |
| 2011 | 86° | 55° | 71° | — | — |
| 2010 | 96° | 72° | 84° | — | — |
| 2009 | 88° | 60° | 74° | — | — |
| 2008warmest | 139° | 137° | 138° | — | — |
| 2007 | 80° | 50° | 65° | — | — |
| 2006 | 69° | 58° | 63° | — | — |
| 2005 | 78° | 53° | 66° | — | — |
| 2004 | 60° | 52° | 56° | — | — |
| 2003 | 68° | 54° | 61° | — | — |
| 2002 | 59° | 54° | 56° | — | — |
| 2001 | 67° | 51° | 59° | — | — |
| 2000 | 67° | 55° | 61° | — | — |
| 1999 | 90° | 72° | 81° | — | — |
| 1998 | 60° | 52° | 56° | — | — |
| 1997 | 81° | 56° | 68° | — | — |
| 1996 | 70° | 51° | 60° | — | — |
| 1995 | 68° | 56° | 62° | — | — |
| 1994 | 69° | 54° | 61° | — | — |
| 1993 | 93° | 66° | 80° | — | — |
| 1992 | 90° | 66° | 78° | — | — |
| 1989 | 74° | 54° | 64° | — | — |
| 1988 | 75° | 57° | 66° | — | — |
| 1987 | 80° | 50° | 65° | — | — |
| 1986 | 67° | 50° | 58° | 0.44" | — |
| 1985 | 71° | 60° | 66° | — | — |
| 1984 | 91° | 60° | 76° | — | — |
| 1983 | 65° | 60° | 62° | — | — |
| 1982 | 70° | 50° | 60° | — | — |
| 1981 | 76° | 57° | 66° | 0.01" | — |
| 1980 | 70° | 56° | 63° | — | — |
| 1979 | 78° | 53° | 66° | — | — |
| 1978 | 73° | 54° | 63° | — | — |
| 1977 | 75° | 58° | 66° | — | — |
| 1976 | 68° | 56° | 62° | — | — |
| 1975 | 80° | 49° | 64° | — | — |
| 1974 | 63° | 54° | 58° | — | — |
| 1973 | 87° | 51° | 69° | — | — |
| 1972 | 67° | 58° | 62° | 0.81" | — |
| 1971coldest | 66° | 47° | 56° | 0.03" | — |
San Leandro, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Leandro, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Leandro, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Leandro, CA
Most pleasant months in San Leandro, CA: April, May, June, July, August, September, October.
What to expect on September 27th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 27th outlook →