October weather in Index, WA

The average temperature in Index in October is 49.9°F (41.5°F–58.3°F). Average precipitation: 12.30 inches.

October is a fall month in Index, and is warmer than the annual average of 49.8°F. Daily temperatures swing about 16.8°F between overnight low and afternoon high. Expect about 17 days with precipitation. Daylight averages about 10h 34m. For travel, October is a wet month.

Avg High
58.3°F
Avg Low
41.5°F
Precipitation
12.30 in
Snow
0.1 in

October records in Index

Date Record High Record Low Record Precip
October 1 82.9°F (1988) 32.0°F (2019) 1.81 in (2017)
October 2 82.0°F (1980) 32.0°F (1977) 1.57 in (2007)
October 3 82.0°F (1979) 32.0°F (1973) 2.10 in (1995)
October 4 81.0°F (2022) 33.1°F (1973) 3.42 in (1997)
October 5 86.0°F (1980) 30.9°F (1974) 2.07 in (1975)
October 6 82.9°F (1987) 33.1°F (1974) 2.51 in (1981)
October 7 80.1°F (1976) 32.0°F (1983) 1.73 in (1982)
October 8 77.0°F (1971) 30.0°F (1985) 2.38 in (2019)
October 9 80.1°F (2022) 30.0°F (1985) 3.92 in (2016)
October 10 79.0°F (1991) 30.9°F (2019) 4.17 in (1995)
October 11 81.0°F (1987) 28.0°F (2009) 2.87 in (2015)
October 12 73.0°F (1982) 28.0°F (2009) 2.35 in (2020)
October 13 77.0°F (1982) 32.0°F (1970) 2.83 in (1973)
October 14 78.1°F (1978) 30.9°F (1970) 2.90 in (2020)
October 15 77.0°F (1986) 28.0°F (1992) 2.02 in (1988)
October 16 75.9°F (2015) 30.0°F (1971) 5.32 in (1988)
October 17 81.0°F (2022) 28.9°F (1971) 1.65 in (2003)
October 18 82.0°F (2022) 28.9°F (1976) 2.43 in (1996)
October 19 73.0°F (1978) 28.9°F (1984) 3.90 in (2017)
October 20 71.1°F (1987) 30.9°F (1984) 3.35 in (2016)
October 21 73.0°F (1998) 28.0°F (1984) 5.85 in (2003)
October 22 73.9°F (2005) 28.9°F (1976) 4.35 in (2017)
October 23 75.0°F (1986) 32.0°F (1984) 1.63 in (2009)
October 24 73.9°F (2007) 28.9°F (1975) 2.91 in (1985)
October 25 66.9°F (1983) 26.1°F (2020) 2.69 in (1985)
October 26 66.0°F (1998) 30.0°F (1978) 4.12 in (1994)
October 27 64.9°F (1973) 30.0°F (1971) 2.00 in (2009)
October 28 70.0°F (2008) 23.0°F (1971) 3.42 in (1973)
October 29 69.1°F (2017) 25.0°F (1971) 4.30 in (2021)
October 30 66.0°F (1970) 23.0°F (2002) 3.48 in (1997)
October 31 64.9°F (1988) 23.0°F (2002) 6.68 in (2015)

Other months in Index