October weather in Grass Valley, CA
The average temperature in Grass Valley in October is 58.2°F (44.2°F–72.1°F). Average precipitation: 2.56 inches.
October is a fall month in Grass Valley, and is warmer than the annual average of 56.1°F. Daily temperatures swing about 27.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 10h 57m. For travel, October is a comfortable month to visit.
Avg High
72.1°F
Avg Low
44.2°F
Precipitation
2.56 in
Daylight
10h 57m
October records in Grass Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 95.0°F (1987) | 34.0°F (1971) | 0.59 in (1984) |
| October 2 | 98.1°F (2024) | 35.1°F (1971) | 0.65 in (1997) |
| October 3 | 98.1°F (2024) | 36.0°F (1973) | 2.21 in (1967) |
| October 4 | 93.0°F (1987) | 35.1°F (1969) | 1.38 in (2008) |
| October 5 | 93.9°F (1987) | 36.0°F (2009) | 1.73 in (2011) |
| October 6 | 93.9°F (2024) | 33.1°F (2007) | 0.58 in (2011) |
| October 7 | 93.9°F (2024) | 32.0°F (1967) | 1.31 in (1981) |
| October 8 | 93.9°F (2024) | 36.0°F (1968) | 0.98 in (1973) |
| October 9 | 93.0°F (1971) | 37.0°F (1968) | 2.35 in (1997) |
| October 10 | 91.9°F (2024) | 33.1°F (2008) | 1.54 in (1975) |
| October 11 | 95.0°F (1991) | 32.0°F (2008) | 1.53 in (2011) |
| October 12 | 93.0°F (1991) | 30.0°F (2008) | 2.47 in (1968) |
| October 13 | 91.0°F (1971) | 30.9°F (2008) | 0.42 in (1968) |
| October 14 | 90.0°F (1978) | 27.0°F (1969) | 2.35 in (2009) |
| October 15 | 91.0°F (1991) | 32.0°F (1966) | 2.32 in (2016) |
| October 16 | 89.1°F (1991) | 33.1°F (1966) | 2.01 in (1969) |
| October 17 | 90.0°F (1974) | 32.0°F (1971) | 1.77 in (2016) |
| October 18 | 87.1°F (1974) | 28.9°F (1984) | 1.36 in (2004) |
| October 19 | 90.0°F (1974) | 28.9°F (1984) | 1.60 in (1979) |
| October 20 | 90.0°F (2023) | 30.9°F (1996) | 1.67 in (2004) |
| October 21 | 96.1°F (2020) | 30.9°F (1996) | 1.32 in (1985) |
| October 22 | 87.1°F (2003) | 32.0°F (1984) | 1.28 in (2012) |
| October 23 | 82.0°F (1988) | 30.0°F (1975) | 2.51 in (1973) |
| October 24 | 86.0°F (2019) | 30.9°F (1971) | 4.09 in (2010) |
| October 25 | 87.1°F (2017) | 30.9°F (1971) | 9.05 in (2021) |
| October 26 | 87.1°F (2003) | 30.9°F (1996) | 4.32 in (1991) |
| October 27 | 89.1°F (1983) | 30.0°F (1970) | 1.28 in (2025) |
| October 28 | 84.0°F (1968) | 30.0°F (1975) | 2.40 in (1981) |
| October 29 | 82.0°F (2003) | 28.0°F (1971) | 1.00 in (1981) |
| October 30 | 82.0°F (1966) | 28.9°F (1971) | 2.22 in (1992) |
| October 31 | 82.9°F (1966) | 28.0°F (1971) | 1.45 in (2001) |