October weather in Sumas, WA
The average temperature in Sumas in October is 50.5°F (41.8°F–59.3°F). Average precipitation: 5.31 inches.
October is a fall month in Sumas, and is warmer than the annual average of 50.3°F. Daily temperatures swing about 17.5°F between overnight low and afternoon high. Expect about 16 days with precipitation. Daylight averages about 10h 30m. For travel, October is a wet month.
Avg High
59.3°F
Avg Low
41.8°F
Precipitation
5.31 in
Daylight
10h 30m
October records in Sumas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 82.0°F (1935) | 26.1°F (1925) | 1.83 in (1981) |
| October 2 | 84.0°F (1935) | 25.0°F (1925) | 2.10 in (1917) |
| October 3 | 82.9°F (2022) | 25.0°F (1925) | 1.58 in (1910) |
| October 4 | 82.0°F (1917) | 27.0°F (1925) | 2.31 in (1990) |
| October 5 | 77.0°F (1952) | 25.0°F (1925) | 1.42 in (1920) |
| October 6 | 79.0°F (1943) | 28.0°F (1924) | 0.98 in (1920) |
| October 7 | 82.0°F (2022) | 27.0°F (1929) | 1.69 in (1967) |
| October 8 | 81.0°F (1917) | 28.9°F (1915) | 2.20 in (1928) |
| October 9 | 80.1°F (1934) | 28.9°F (1935) | 1.24 in (1940) |
| October 10 | 84.0°F (1934) | 30.0°F (1907) | 2.45 in (1913) |
| October 11 | 79.0°F (1991) | 25.0°F (1924) | 1.42 in (1995) |
| October 12 | 73.9°F (1907) | 25.0°F (1930) | 2.26 in (1913) |
| October 13 | 75.9°F (2022) | 24.1°F (1930) | 1.40 in (2016) |
| October 14 | 78.1°F (1914) | 27.0°F (1969) | 1.27 in (1988) |
| October 15 | 82.0°F (2022) | 25.0°F (1938) | 1.96 in (1947) |
| October 16 | 77.0°F (2022) | 23.0°F (1938) | 2.01 in (2003) |
| October 17 | 77.0°F (2022) | 23.0°F (1949) | 2.35 in (2003) |
| October 18 | 71.1°F (1940) | 25.0°F (1946) | 2.10 in (1950) |
| October 19 | 73.9°F (2014) | 23.0°F (1905) | 2.66 in (2024) |
| October 20 | 73.0°F (1918) | 19.9°F (1949) | 1.62 in (2003) |
| October 21 | 72.0°F (1926) | 23.0°F (1905) | 1.78 in (1960) |
| October 22 | 70.0°F (1903) | 23.0°F (1935) | 1.74 in (1944) |
| October 23 | 73.0°F (1914) | 21.9°F (1921) | 1.94 in (1933) |
| October 24 | 70.0°F (1941) | 27.0°F (1935) | 2.00 in (1945) |
| October 25 | 73.9°F (1914) | 24.1°F (1954) | 2.90 in (1945) |
| October 26 | 73.0°F (1914) | 24.1°F (1923) | 2.05 in (1922) |
| October 27 | 78.1°F (1914) | 19.9°F (1919) | 2.52 in (2024) |
| October 28 | 72.0°F (1914) | 21.9°F (1917) | 1.86 in (1996) |
| October 29 | 66.9°F (1968) | 21.9°F (1913) | 1.32 in (1975) |
| October 30 | 69.1°F (1939) | 21.0°F (1935) | 1.88 in (1999) |
| October 31 | 69.1°F (1954) | 19.0°F (1984) | 1.66 in (2012) |