July weather in Castle Rock, WA
The average temperature in Castle Rock in July is 66.4°F (53.4°F–79.3°F). Average precipitation: 0.63 inches.
July is a summer month in Castle Rock, and is warmer than the annual average of 53.2°F. Daily temperatures swing about 25.9°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 15h 15m. For travel, July is one of the best months of the year to visit.
Avg High
79.3°F
Avg Low
53.4°F
Precipitation
0.63 in
Daylight
15h 15m
July records in Castle Rock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 102.0°F (1942) | 39.0°F (1944) | 0.73 in (1979) |
| July 2 | 105.1°F (1942) | 35.1°F (1930) | 0.48 in (2010) |
| July 3 | 91.9°F (1991) | 39.9°F (1929) | 1.14 in (1928) |
| July 4 | 93.9°F (1970) | 36.0°F (1933) | 0.41 in (1986) |
| July 5 | 95.0°F (2024) | 37.9°F (1932) | 0.53 in (1987) |
| July 6 | 98.1°F (2024) | 33.1°F (1932) | 0.75 in (1961) |
| July 7 | 98.1°F (1945) | 37.9°F (1944) | 0.45 in (1948) |
| July 8 | 99.0°F (1952) | 35.1°F (1930) | 0.81 in (1976) |
| July 9 | 100.0°F (2024) | 37.9°F (1938) | 1.15 in (1997) |
| July 10 | 100.0°F (2024) | 37.9°F (1934) | 0.64 in (1942) |
| July 11 | 96.1°F (2002) | 37.9°F (1934) | 0.47 in (1971) |
| July 12 | 98.1°F (1951) | 39.0°F (1929) | 0.43 in (1974) |
| July 13 | 102.9°F (1961) | 41.0°F (1981) | 0.92 in (1932) |
| July 14 | 100.0°F (1941) | 42.1°F (2020) | 0.54 in (1942) |
| July 15 | 100.0°F (1941) | 39.0°F (1936) | 0.80 in (1964) |
| July 16 | 99.0°F (1941) | 37.9°F (1929) | 2.20 in (1978) |
| July 17 | 104.0°F (1979) | 39.9°F (1926) | 0.98 in (1993) |
| July 18 | 102.0°F (1944) | 37.9°F (1930) | 0.44 in (1987) |
| July 19 | 96.1°F (1956) | 42.1°F (1926) | 0.39 in (1939) |
| July 20 | 102.0°F (1956) | 41.0°F (1964) | 0.37 in (1968) |
| July 21 | 102.0°F (2006) | 36.0°F (1929) | 0.45 in (1983) |
| July 22 | 99.0°F (1928) | 39.9°F (1941) | 0.28 in (1993) |
| July 23 | 100.0°F (1927) | 41.0°F (1953) | 0.34 in (1993) |
| July 24 | 102.9°F (2004) | 41.0°F (1936) | 0.10 in (2023) |
| July 25 | 97.0°F (1928) | 32.0°F (1930) | 0.43 in (1947) |
| July 26 | 97.0°F (1939) | 39.9°F (1930) | 0.72 in (1940) |
| July 27 | 102.0°F (2009) | 37.9°F (1930) | 0.19 in (1978) |
| July 28 | 105.1°F (2009) | 36.0°F (1933) | 1.25 in (1947) |
| July 29 | 105.1°F (2009) | 42.1°F (1949) | 0.40 in (1975) |
| July 30 | 100.0°F (2015) | 42.1°F (1938) | 0.26 in (2006) |
| July 31 | 100.9°F (1992) | 39.0°F (1937) | 0.44 in (1985) |