October weather in Tustin, CA
The average temperature in Tustin in October is 69.4°F (59.4°F–79.4°F). Average precipitation: 0.50 inches.
October is a fall month in Tustin, and is warmer than the annual average of 66.1°F. Daily temperatures swing about 20°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 11h 8m. For travel, October is one of the best months of the year to visit.
Avg High
79.4°F
Avg Low
59.4°F
Precipitation
0.50 in
Daylight
11h 8m
October records in Tustin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 100.9°F (1945) | 43.0°F (1930) | 1.55 in (1983) |
| October 2 | 100.9°F (1945) | 41.0°F (1950) | 0.45 in (1916) |
| October 3 | 102.0°F (1953) | 42.1°F (1950) | 0.60 in (1914) |
| October 4 | 104.0°F (1987) | 41.0°F (1950) | 0.22 in (1956) |
| October 5 | 102.9°F (1953) | 44.1°F (1950) | 0.95 in (1925) |
| October 6 | 102.9°F (1971) | 45.0°F (1916) | 0.65 in (2010) |
| October 7 | 100.9°F (1951) | 43.0°F (1916) | 0.38 in (1975) |
| October 8 | 99.0°F (2008) | 42.1°F (1949) | 0.34 in (1939) |
| October 9 | 106.0°F (2015) | 37.9°F (1949) | 0.19 in (1916) |
| October 10 | 102.9°F (2015) | 37.9°F (1949) | 0.46 in (1932) |
| October 11 | 98.1°F (2015) | 37.9°F (1924) | 0.53 in (1957) |
| October 12 | 105.1°F (2011) | 34.0°F (1924) | 0.19 in (1941) |
| October 13 | 104.0°F (1950) | 39.0°F (1924) | 0.75 in (2018) |
| October 14 | 104.0°F (1961) | 35.1°F (1920) | 1.48 in (2025) |
| October 15 | 104.0°F (1961) | 36.0°F (1920) | 0.17 in (1907) |
| October 16 | 106.0°F (1958) | 37.0°F (1920) | 0.25 in (1963) |
| October 17 | 100.0°F (1958) | 37.0°F (1938) | 1.04 in (2004) |
| October 18 | 97.0°F (1933) | 39.0°F (1938) | 2.50 in (1934) |
| October 19 | 100.9°F (1940) | 35.1°F (1949) | 0.70 in (1934) |
| October 20 | 102.0°F (1940) | 35.1°F (1920) | 3.15 in (2004) |
| October 21 | 100.0°F (1965) | 34.0°F (1949) | 0.44 in (1957) |
| October 22 | 102.9°F (1929) | 37.0°F (1920) | 0.57 in (1941) |
| October 23 | 102.0°F (2017) | 36.0°F (1949) | 0.73 in (1987) |
| October 24 | 104.0°F (2017) | 36.0°F (1949) | 0.38 in (1921) |
| October 25 | 102.0°F (2017) | 37.0°F (1920) | 0.53 in (1951) |
| October 26 | 96.1°F (2003) | 35.1°F (1920) | 1.25 in (1940) |
| October 27 | 96.1°F (1973) | 35.1°F (1920) | 0.78 in (2000) |
| October 28 | 95.0°F (1973) | 37.0°F (1949) | 0.68 in (1927) |
| October 29 | 100.0°F (1931) | 37.0°F (1971) | 0.26 in (1924) |
| October 30 | 100.0°F (1931) | 37.0°F (1922) | 0.98 in (1996) |
| October 31 | 100.0°F (1939) | 34.0°F (1935) | 0.67 in (1987) |