July weather in Sumas, WA
The average temperature in Sumas in July is 63.6°F (51.2°F–76.0°F). Average precipitation: 1.45 inches.
July is a summer month in Sumas, and is warmer than the annual average of 50.3°F. Daily temperatures swing about 24.8°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 15h 36m. For travel, July is one of the best months of the year to visit.
Avg High
76.0°F
Avg Low
51.2°F
Precipitation
1.45 in
Daylight
15h 36m
July records in Sumas
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 98.1°F (1942) | 35.1°F (1909) | 0.98 in (1954) |
| July 2 | 95.0°F (1942) | 33.1°F (1909) | 0.76 in (1912) |
| July 3 | 97.0°F (1942) | 34.0°F (1940) | 0.94 in (2012) |
| July 4 | 89.1°F (1997) | 33.1°F (1910) | 1.17 in (1936) |
| July 5 | 96.1°F (2015) | 30.9°F (1916) | 1.55 in (1992) |
| July 6 | 91.0°F (1958) | 30.0°F (1915) | 1.16 in (1948) |
| July 7 | 91.9°F (1908) | 32.0°F (1924) | 0.39 in (1981) |
| July 8 | 96.1°F (1905) | 33.1°F (1924) | 1.86 in (1997) |
| July 9 | 90.0°F (1952) | 35.1°F (1924) | 0.74 in (1972) |
| July 10 | 96.1°F (2007) | 36.0°F (1916) | 1.44 in (1932) |
| July 11 | 98.1°F (2007) | 30.9°F (1915) | 0.94 in (1983) |
| July 12 | 99.0°F (1961) | 35.1°F (1924) | 2.51 in (1972) |
| July 13 | 97.0°F (1935) | 34.0°F (1916) | 1.92 in (2003) |
| July 14 | 98.1°F (1941) | 35.1°F (1916) | 0.98 in (1968) |
| July 15 | 102.0°F (1941) | 30.9°F (1916) | 0.95 in (1939) |
| July 16 | 100.0°F (1941) | 30.0°F (1916) | 1.80 in (1942) |
| July 17 | 98.1°F (1941) | 30.9°F (1916) | 0.75 in (1916) |
| July 18 | 98.1°F (1944) | 32.0°F (1915) | 0.56 in (1949) |
| July 19 | 95.0°F (1956) | 32.0°F (1916) | 0.49 in (1981) |
| July 20 | 97.0°F (1938) | 32.0°F (1914) | 0.77 in (1993) |
| July 21 | 95.0°F (2006) | 33.1°F (1916) | 0.80 in (1983) |
| July 22 | 91.0°F (1978) | 36.0°F (1916) | 0.73 in (1916) |
| July 23 | 95.0°F (1927) | 32.0°F (1915) | 0.78 in (2014) |
| July 24 | 96.1°F (1911) | 30.9°F (1916) | 1.00 in (2014) |
| July 25 | 93.9°F (1928) | 30.0°F (1916) | 0.92 in (2023) |
| July 26 | 93.0°F (2022) | 32.0°F (1916) | 1.68 in (1995) |
| July 27 | 102.0°F (1958) | 35.1°F (1910) | 0.41 in (1957) |
| July 28 | 96.1°F (1958) | 33.1°F (1914) | 0.97 in (2001) |
| July 29 | 98.1°F (2009) | 33.1°F (1914) | 0.62 in (1933) |
| July 30 | 97.0°F (1907) | 35.1°F (1914) | 0.66 in (2024) |
| July 31 | 95.0°F (1965) | 35.1°F (1910) | 1.39 in (1964) |