May weather in Kennewick, WA
The average temperature in Kennewick in May is 62.7°F (50.1°F–75.3°F). Average precipitation: 0.84 inches.
May is a spring month in Kennewick, and is warmer than the annual average of 55.1°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 14h 46m. For travel, May is one of the best months of the year to visit.
Avg High
75.3°F
Avg Low
50.1°F
Precipitation
0.84 in
Daylight
14h 46m
May records in Kennewick
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.9°F (1998) | 26.1°F (1905) | 0.58 in (2022) |
| May 2 | 90.0°F (1937) | 30.0°F (1954) | 0.25 in (2007) |
| May 3 | 91.0°F (1966) | 33.1°F (1928) | 0.48 in (1905) |
| May 4 | 93.9°F (1966) | 33.1°F (1962) | 0.32 in (1993) |
| May 5 | 95.0°F (1966) | 32.0°F (1906) | 0.28 in (2024) |
| May 6 | 93.0°F (1947) | 32.0°F (1959) | 0.38 in (1980) |
| May 7 | 95.0°F (1992) | 30.0°F (1986) | 0.39 in (1963) |
| May 8 | 97.0°F (1987) | 30.9°F (1904) | 0.27 in (1947) |
| May 9 | 98.1°F (1987) | 27.0°F (1922) | 0.92 in (1956) |
| May 10 | 95.0°F (1987) | 30.0°F (1894) | 0.61 in (1961) |
| May 11 | 97.0°F (1924) | 32.0°F (1921) | 0.45 in (1958) |
| May 12 | 97.0°F (1949) | 30.9°F (1920) | 0.60 in (1948) |
| May 13 | 100.0°F (1993) | 33.1°F (1919) | 0.93 in (2015) |
| May 14 | 100.9°F (1939) | 30.0°F (1955) | 0.42 in (1944) |
| May 15 | 97.0°F (1939) | 36.0°F (1905) | 0.64 in (2011) |
| May 16 | 93.0°F (1973) | 33.1°F (1986) | 1.18 in (1994) |
| May 17 | 97.0°F (2006) | 36.0°F (1917) | 3.03 in (2019) |
| May 18 | 98.1°F (2006) | 30.9°F (1905) | 0.62 in (2025) |
| May 19 | 98.1°F (2006) | 37.0°F (1974) | 0.50 in (1896) |
| May 20 | 95.0°F (2023) | 34.0°F (1920) | 0.72 in (2006) |
| May 21 | 96.1°F (2023) | 36.0°F (1905) | 0.81 in (1972) |
| May 22 | 98.1°F (1910) | 34.0°F (1918) | 0.58 in (2016) |
| May 23 | 98.1°F (1910) | 35.1°F (1964) | 0.52 in (1962) |
| May 24 | 100.0°F (2001) | 32.0°F (1922) | 0.50 in (1962) |
| May 25 | 98.1°F (1938) | 32.0°F (1904) | 0.55 in (1981) |
| May 26 | 100.0°F (1936) | 36.0°F (1920) | 0.42 in (1980) |
| May 27 | 96.1°F (1944) | 35.1°F (1918) | 0.36 in (1945) |
| May 28 | 96.1°F (1972) | 39.0°F (1955) | 0.27 in (1988) |
| May 29 | 102.9°F (1983) | 32.0°F (1922) | 0.70 in (1906) |
| May 30 | 104.0°F (1983) | 37.0°F (1920) | 0.37 in (1930) |
| May 31 | 104.0°F (1910) | 35.1°F (1920) | 0.72 in (2000) |