October weather in Fontana, CA
The average temperature in Fontana in October is 69.8°F (57.1°F–82.6°F). Average precipitation: 0.41 inches.
October is a fall month in Fontana, and is warmer than the annual average of 66.8°F. Daily temperatures swing about 25.5°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 11h 7m. For travel, October is a comfortable month to visit.
Avg High
82.6°F
Avg Low
57.1°F
Precipitation
0.41 in
Daylight
11h 7m
October records in Fontana
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 107.1°F (2012) | 52.0°F (2019) | 0.00 in (1998) |
| October 2 | 105.1°F (2020) | 52.0°F (2023) | 0.00 in (1998) |
| October 3 | 100.9°F (2020) | 50.0°F (2002) | 0.00 in (1998) |
| October 4 | 102.0°F (2014) | 51.1°F (2009) | 0.12 in (2015) |
| October 5 | 100.0°F (2014) | 50.0°F (2009) | 0.97 in (2011) |
| October 6 | 100.9°F (2023) | 48.0°F (2007) | 0.45 in (2010) |
| October 7 | 99.0°F (2023) | 48.0°F (2011) | 0.00 in (1998) |
| October 8 | 98.1°F (2008) | 50.0°F (2011) | 0.06 in (2021) |
| October 9 | 102.9°F (2015) | 48.9°F (2013) | 0.09 in (2013) |
| October 10 | 100.0°F (2015) | 48.0°F (2013) | 0.00 in (1998) |
| October 11 | 98.1°F (2015) | 48.9°F (2008) | 0.16 in (2012) |
| October 12 | 100.0°F (2011) | 48.0°F (2008) | 0.39 in (2018) |
| October 13 | 100.0°F (1999) | 48.9°F (2000) | 0.33 in (2007) |
| October 14 | 99.0°F (2020) | 48.0°F (2000) | 1.08 in (2025) |
| October 15 | 100.0°F (2020) | 50.0°F (2000) | 0.30 in (2022) |
| October 16 | 102.0°F (2020) | 51.1°F (1998) | 0.05 in (2015) |
| October 17 | 100.9°F (2012) | 52.0°F (1998) | 0.87 in (2005) |
| October 18 | 100.9°F (2023) | 44.1°F (1998) | 0.57 in (2005) |
| October 19 | 98.1°F (2003) | 50.0°F (2021) | 0.07 in (2004) |
| October 20 | 100.9°F (2003) | 48.9°F (2002) | 0.97 in (2004) |
| October 21 | 100.9°F (2003) | 50.0°F (2004) | 0.03 in (2010) |
| October 22 | 100.0°F (2003) | 50.0°F (2004) | 0.03 in (2010) |
| October 23 | 104.0°F (2017) | 50.0°F (2004) | 0.25 in (2016) |
| October 24 | 102.0°F (2017) | 50.0°F (2004) | 0.30 in (2016) |
| October 25 | 99.0°F (2017) | 51.1°F (1998) | 0.18 in (2010) |
| October 26 | 95.0°F (2017) | 46.9°F (1998) | 1.04 in (2004) |
| October 27 | 96.1°F (2008) | 46.0°F (2011) | 1.37 in (2004) |
| October 28 | 97.0°F (2008) | 46.9°F (2010) | 0.11 in (2013) |
| October 29 | 95.0°F (2008) | 43.0°F (2009) | 0.39 in (2000) |
| October 30 | 91.9°F (2025) | 44.1°F (2019) | 0.04 in (2010) |
| October 31 | 91.0°F (1999) | 41.0°F (2019) | 0.18 in (2014) |