October weather in Union City, CA

The average temperature in Union City in October is 62.6°F (52.0°F–73.3°F). Average precipitation: 0.69 inches.

October is a fall month in Union City, and is warmer than the annual average of 59.5°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 11h 0m. For travel, October is one of the best months of the year to visit.

Avg High
73.3°F
Avg Low
52.0°F
Precipitation
0.69 in
Daylight
11h 0m

October records in Union City

Date Record High Record Low Record Precip
October 1 93.0°F (2024) 45.0°F (2019) 0.00 in (1996)
October 2 97.0°F (2024) 45.0°F (2019) 0.47 in (2025)
October 3 96.1°F (2024) 45.0°F (2019) 0.01 in (2016)
October 4 90.0°F (2014) 46.0°F (2017) 0.13 in (2011)
October 5 91.0°F (2024) 43.0°F (2009) 0.40 in (2011)
October 6 93.9°F (2024) 43.0°F (2007) 0.26 in (2011)
October 7 95.0°F (1996) 42.1°F (1997) 0.00 in (1996)
October 8 98.1°F (1996) 48.0°F (2011) 0.00 in (1996)
October 9 87.1°F (1999) 46.0°F (2005) 0.37 in (1997)
October 10 89.1°F (1999) 45.0°F (2019) 0.45 in (2007)
October 11 84.9°F (2004) 42.1°F (2007) 0.01 in (2000)
October 12 89.1°F (2010) 43.0°F (2017) 0.50 in (2007)
October 13 91.0°F (2015) 43.0°F (2021) 2.21 in (2009)
October 14 87.1°F (2001) 44.1°F (2019) 0.38 in (2009)
October 15 91.0°F (2020) 44.1°F (2019) 0.08 in (2005)
October 16 90.0°F (2020) 44.1°F (2019) 1.61 in (2016)
October 17 89.1°F (2020) 43.0°F (1996) 0.16 in (2007)
October 18 87.1°F (2012) 45.0°F (1996) 0.20 in (2004)
October 19 84.0°F (2012) 42.1°F (2021) 0.56 in (2004)
October 20 84.0°F (1998) 39.9°F (1996) 0.53 in (2004)
October 21 84.9°F (1998) 41.0°F (1996) 0.30 in (2021)
October 22 82.9°F (2019) 42.1°F (1996) 0.60 in (2012)
October 23 86.0°F (2017) 42.1°F (2022) 0.15 in (2004)
October 24 91.0°F (2017) 41.0°F (2022) 0.75 in (2021)
October 25 90.0°F (2003) 46.0°F (2004) 2.60 in (2021)
October 26 87.1°F (2003) 39.9°F (1996) 0.86 in (2004)
October 27 87.1°F (2003) 39.9°F (2023) 0.10 in (2000)
October 28 88.0°F (2003) 42.1°F (2022) 1.26 in (2016)
October 29 78.1°F (2010) 39.9°F (2022) 0.48 in (2000)
October 30 79.0°F (2014) 39.9°F (2023) 0.40 in (1996)
October 31 82.9°F (2015) 39.9°F (2002) 0.30 in (2014)

Other months in Union City