April weather in Black Diamond, WA
The average temperature in Black Diamond in April is 48.5°F (38.5°F–58.6°F). Average precipitation: 5.55 inches.
April is a spring month in Black Diamond, and is cooler than the annual average of 50.5°F. Daily temperatures swing about 20.1°F between overnight low and afternoon high. Expect about 19 days with precipitation. Daylight averages about 13h 23m. For travel, April is a wet month.
Avg High
58.6°F
Avg Low
38.5°F
Precipitation
5.55 in
Daylight
13h 23m
April records in Black Diamond
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 80.1°F (1987) | 25.0°F (1929) | 1.29 in (2011) |
| April 2 | 77.0°F (1944) | 23.0°F (2008) | 1.50 in (2009) |
| April 3 | 73.9°F (2004) | 23.0°F (1935) | 0.81 in (1915) |
| April 4 | 75.9°F (1952) | 25.0°F (1936) | 3.20 in (1991) |
| April 5 | 77.0°F (1971) | 23.0°F (2021) | 1.84 in (1989) |
| April 6 | 78.1°F (2007) | 26.1°F (1975) | 1.26 in (2013) |
| April 7 | 86.0°F (2016) | 24.1°F (1952) | 1.94 in (2013) |
| April 8 | 80.1°F (2016) | 25.0°F (1952) | 1.10 in (2018) |
| April 9 | 75.0°F (1921) | 24.1°F (1988) | 1.25 in (1970) |
| April 10 | 80.1°F (1921) | 26.1°F (1935) | 1.24 in (2001) |
| April 11 | 82.0°F (2004) | 26.1°F (2023) | 1.74 in (2019) |
| April 12 | 82.0°F (1940) | 27.0°F (1968) | 1.14 in (1944) |
| April 13 | 79.0°F (1940) | 26.1°F (1968) | 1.72 in (2002) |
| April 14 | 82.9°F (1926) | 28.0°F (1970) | 1.34 in (2018) |
| April 15 | 82.0°F (1936) | 27.0°F (1967) | 1.11 in (1950) |
| April 16 | 84.0°F (1947) | 28.9°F (1939) | 1.30 in (2005) |
| April 17 | 82.0°F (1939) | 26.1°F (1968) | 2.00 in (1938) |
| April 18 | 89.1°F (2016) | 26.1°F (1964) | 1.07 in (1908) |
| April 19 | 88.0°F (1934) | 26.1°F (1931) | 1.98 in (1965) |
| April 20 | 87.1°F (1934) | 24.1°F (2023) | 1.05 in (1960) |
| April 21 | 80.1°F (1934) | 25.0°F (1975) | 1.22 in (1921) |
| April 22 | 81.0°F (1977) | 28.0°F (1954) | 0.91 in (2014) |
| April 23 | 77.0°F (2005) | 28.0°F (1975) | 1.66 in (1940) |
| April 24 | 79.0°F (2018) | 27.0°F (1924) | 1.10 in (1945) |
| April 25 | 81.0°F (1941) | 23.0°F (2010) | 1.04 in (1917) |
| April 26 | 87.1°F (2018) | 28.0°F (1925) | 0.90 in (1959) |
| April 27 | 84.9°F (1987) | 27.0°F (1948) | 0.93 in (1962) |
| April 28 | 88.0°F (2023) | 28.9°F (1945) | 1.30 in (1922) |
| April 29 | 82.0°F (1957) | 27.0°F (1973) | 1.07 in (1992) |
| April 30 | 82.9°F (2014) | 28.9°F (1939) | 1.51 in (1928) |