May weather in Pullman, WA
The average temperature in Pullman in May is 54.2°F (41.9°F–66.4°F). Average precipitation: 1.81 inches.
May is a spring month in Pullman, and is warmer than the annual average of 48.2°F. Daily temperatures swing about 24.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 50m. For travel, May is a comfortable month to visit.
Avg High
66.4°F
Avg Low
41.9°F
Precipitation
1.81 in
Snow
0.1 in
May records in Pullman
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.0°F (1981) | 24.1°F (1954) | 0.78 in (2001) |
| May 2 | 82.9°F (1998) | 23.0°F (1954) | 0.34 in (2011) |
| May 3 | 86.0°F (1966) | 27.0°F (2006) | 0.48 in (1948) |
| May 4 | 88.0°F (1966) | 28.9°F (1949) | 0.79 in (1956) |
| May 5 | 90.0°F (1966) | 28.0°F (1965) | 0.62 in (2009) |
| May 6 | 86.0°F (1947) | 28.0°F (1977) | 0.49 in (1983) |
| May 7 | 86.0°F (1992) | 27.0°F (2000) | 0.49 in (1956) |
| May 8 | 88.0°F (1987) | 21.0°F (2002) | 1.35 in (1956) |
| May 9 | 87.1°F (1987) | 28.9°F (1996) | 0.48 in (2018) |
| May 10 | 86.0°F (1987) | 27.0°F (1999) | 0.83 in (2005) |
| May 11 | 88.0°F (1949) | 28.9°F (2012) | 0.65 in (1967) |
| May 12 | 87.1°F (1949) | 28.0°F (1985) | 0.38 in (1971) |
| May 13 | 90.0°F (1988) | 30.0°F (1983) | 0.84 in (2015) |
| May 14 | 84.9°F (2012) | 28.9°F (1955) | 1.01 in (1959) |
| May 15 | 86.0°F (1973) | 30.0°F (1943) | 0.88 in (2001) |
| May 16 | 90.0°F (2006) | 28.0°F (1974) | 1.02 in (2011) |
| May 17 | 90.0°F (2006) | 30.9°F (1942) | 1.00 in (1941) |
| May 18 | 91.0°F (2006) | 27.0°F (1966) | 0.86 in (1991) |
| May 19 | 91.0°F (2006) | 30.9°F (1976) | 1.08 in (1948) |
| May 20 | 87.1°F (2023) | 30.0°F (1971) | 0.91 in (1994) |
| May 21 | 89.1°F (2023) | 27.0°F (1973) | 1.24 in (2020) |
| May 22 | 88.0°F (1958) | 30.0°F (1960) | 0.76 in (1998) |
| May 23 | 90.0°F (2001) | 28.0°F (2013) | 0.52 in (1998) |
| May 24 | 97.0°F (2001) | 30.0°F (2010) | 0.71 in (1990) |
| May 25 | 91.9°F (2001) | 33.1°F (1955) | 0.46 in (1942) |
| May 26 | 89.1°F (1947) | 33.1°F (1967) | 1.01 in (1980) |
| May 27 | 91.9°F (2001) | 30.9°F (1973) | 0.61 in (1946) |
| May 28 | 89.1°F (2001) | 34.0°F (2011) | 0.67 in (1948) |
| May 29 | 91.9°F (1983) | 30.9°F (1977) | 0.86 in (1988) |
| May 30 | 90.0°F (1983) | 32.0°F (1952) | 0.38 in (2004) |
| May 31 | 91.0°F (2017) | 32.0°F (1955) | 0.75 in (2000) |