May weather in Maple Valley, WA
The average temperature in Maple Valley in May is 54.9°F (43.9°F–65.9°F). Average precipitation: 3.87 inches.
May is a spring month in Maple Valley, and is warmer than the annual average of 50.5°F. Daily temperatures swing about 22°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 14h 54m. For travel, May is a comfortable month to visit.
Avg High
65.9°F
Avg Low
43.9°F
Precipitation
3.87 in
Daylight
14h 54m
May records in Maple Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (2014) | 25.0°F (1954) | 1.12 in (1949) |
| May 2 | 89.1°F (1937) | 28.9°F (1948) | 0.75 in (2020) |
| May 3 | 86.0°F (1937) | 30.0°F (1974) | 0.78 in (2012) |
| May 4 | 87.1°F (1953) | 28.0°F (1975) | 1.15 in (1936) |
| May 5 | 89.1°F (1953) | 27.0°F (1952) | 1.12 in (2017) |
| May 6 | 84.9°F (2013) | 30.0°F (1959) | 1.27 in (1966) |
| May 7 | 88.0°F (1920) | 28.9°F (1965) | 1.41 in (1925) |
| May 8 | 87.1°F (1987) | 28.9°F (1930) | 0.80 in (1973) |
| May 9 | 88.0°F (1940) | 30.0°F (1922) | 0.96 in (1911) |
| May 10 | 87.1°F (2019) | 30.9°F (1920) | 1.62 in (1910) |
| May 11 | 91.0°F (1997) | 28.9°F (2004) | 1.31 in (1951) |
| May 12 | 91.9°F (1924) | 23.0°F (1965) | 0.76 in (1970) |
| May 13 | 93.0°F (1973) | 28.0°F (1990) | 1.11 in (1911) |
| May 14 | 93.0°F (1973) | 28.0°F (2022) | 1.22 in (2001) |
| May 15 | 91.0°F (2023) | 28.0°F (2022) | 1.38 in (2011) |
| May 16 | 88.0°F (1985) | 32.0°F (1963) | 1.72 in (1921) |
| May 17 | 90.0°F (1956) | 30.9°F (1917) | 1.14 in (1989) |
| May 18 | 90.0°F (1956) | 30.0°F (2022) | 1.23 in (1911) |
| May 19 | 89.1°F (1963) | 33.1°F (1933) | 1.06 in (1936) |
| May 20 | 96.1°F (1963) | 32.0°F (1959) | 1.49 in (1964) |
| May 21 | 93.9°F (1963) | 32.0°F (1971) | 1.65 in (1964) |
| May 22 | 87.1°F (1958) | 30.9°F (1998) | 1.05 in (1984) |
| May 23 | 91.0°F (1969) | 30.9°F (1950) | 2.10 in (1944) |
| May 24 | 90.0°F (1928) | 30.9°F (1950) | 1.18 in (1981) |
| May 25 | 87.1°F (1947) | 30.9°F (1964) | 0.65 in (1912) |
| May 26 | 97.0°F (2005) | 30.9°F (1930) | 1.15 in (1980) |
| May 27 | 97.0°F (2005) | 32.0°F (1922) | 1.13 in (1948) |
| May 28 | 102.0°F (1983) | 30.0°F (1966) | 1.97 in (2010) |
| May 29 | 88.0°F (1983) | 28.9°F (2011) | 2.35 in (1969) |
| May 30 | 90.0°F (1956) | 28.9°F (2011) | 1.38 in (2020) |
| May 31 | 90.0°F (1922) | 30.0°F (1953) | 1.42 in (1997) |