October weather in Grand Coulee, WA

The average temperature in Grand Coulee in October is 50.1°F (40.1°F–60.2°F). Average precipitation: 0.94 inches.

October is a fall month in Grand Coulee, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 20.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 10h 34m. For travel, October is a comfortable month to visit.

Avg High
60.2°F
Avg Low
40.1°F
Precipitation
0.94 in
Daylight
10h 34m

October records in Grand Coulee

Date Record High Record Low Record Precip
October 1 88.0°F (1935) 33.1°F (1983) 0.39 in (1951)
October 2 90.0°F (1935) 33.1°F (1986) 0.34 in (1951)
October 3 87.1°F (1935) 34.0°F (1950) 0.51 in (1937)
October 4 84.0°F (1988) 34.0°F (1977) 0.35 in (1949)
October 5 81.0°F (1980) 30.9°F (2001) 0.60 in (2016)
October 6 82.9°F (1943) 32.0°F (2000) 0.53 in (1981)
October 7 84.0°F (2014) 32.0°F (1949) 0.18 in (1973)
October 8 82.0°F (1943) 25.0°F (1985) 0.26 in (1950)
October 9 86.0°F (1936) 28.0°F (1985) 0.54 in (1947)
October 10 87.1°F (1934) 25.0°F (2019) 0.42 in (1962)
October 11 84.0°F (1934) 21.0°F (2009) 0.22 in (1984)
October 12 81.0°F (1936) 23.0°F (2009) 0.38 in (2025)
October 13 78.1°F (1939) 28.0°F (2002) 0.59 in (2016)
October 14 73.9°F (1945) 28.0°F (2017) 0.63 in (2016)
October 15 79.0°F (1963) 30.0°F (1992) 0.35 in (1990)
October 16 75.0°F (1936) 28.9°F (1999) 1.36 in (2006)
October 17 73.9°F (1936) 23.0°F (1984) 0.56 in (2004)
October 18 75.9°F (1940) 27.0°F (1984) 0.30 in (1988)
October 19 80.1°F (1940) 25.0°F (1949) 0.48 in (1971)
October 20 75.0°F (2003) 21.9°F (1985) 0.45 in (2016)
October 21 81.0°F (1939) 27.0°F (1984) 0.31 in (1934)
October 22 78.1°F (1939) 27.0°F (2020) 0.59 in (2014)
October 23 72.0°F (1936) 21.9°F (1945) 0.36 in (1970)
October 24 73.9°F (1936) 23.0°F (2002) 0.60 in (1940)
October 25 72.0°F (1937) 23.0°F (2020) 0.76 in (2023)
October 26 72.0°F (1937) 19.0°F (2002) 0.40 in (2009)
October 27 68.0°F (1936) 23.0°F (2020) 0.25 in (1950)
October 28 72.0°F (2003) 17.1°F (1991) 0.47 in (2018)
October 29 68.0°F (1987) 19.0°F (2019) 0.40 in (1950)
October 30 66.9°F (2015) 15.1°F (2002) 0.40 in (2001)
October 31 70.0°F (1967) 10.0°F (1984) 0.30 in (1934)

Other months in Grand Coulee