May weather in Pasco, WA
The average temperature in Pasco in May is 61.4°F (46.3°F–76.5°F). Average precipitation: 0.71 inches.
May is a spring month in Pasco, and is warmer than the annual average of 53.3°F. Daily temperatures swing about 30.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 47m. For travel, May is a comfortable month to visit.
Avg High
76.5°F
Avg Low
46.3°F
Precipitation
0.71 in
Daylight
14h 47m
May records in Pasco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.0°F (1998) | 28.2°F (2013) | 0.09 in (2007) |
| May 2 | 90.0°F (2014) | 29.1°F (2008) | 0.23 in (2009) |
| May 3 | 91.0°F (1946) | 31.1°F (2006) | 0.08 in (1999) |
| May 4 | 91.9°F (2017) | 30.2°F (2011) | 0.31 in (2017) |
| May 5 | 88.0°F (1945) | 28.0°F (1999) | 0.54 in (2024) |
| May 6 | 89.1°F (2013) | 30.0°F (2000) | 0.31 in (1999) |
| May 7 | 91.0°F (2013) | 30.0°F (2003) | 0.08 in (1946) |
| May 8 | 93.0°F (2007) | 28.9°F (2002) | 0.19 in (2014) |
| May 9 | 93.0°F (2013) | 28.9°F (1999) | 0.10 in (2018) |
| May 10 | 97.0°F (2013) | 30.0°F (1999) | 0.12 in (2010) |
| May 11 | 96.1°F (2013) | 30.0°F (1999) | 0.27 in (2018) |
| May 12 | 91.9°F (2001) | 32.0°F (2012) | 0.57 in (2015) |
| May 13 | 93.0°F (2023) | 32.0°F (2006) | 0.54 in (2015) |
| May 14 | 93.9°F (2023) | 37.9°F (2006) | 0.42 in (2016) |
| May 15 | 93.9°F (2012) | 33.1°F (2017) | 0.49 in (2005) |
| May 16 | 96.1°F (2006) | 34.0°F (1998) | 0.49 in (1945) |
| May 17 | 100.0°F (2006) | 33.1°F (2011) | 0.75 in (2025) |
| May 18 | 99.0°F (2006) | 36.0°F (2001) | 0.16 in (2010) |
| May 19 | 98.1°F (2023) | 32.0°F (2003) | 0.19 in (2006) |
| May 20 | 98.1°F (2023) | 39.9°F (1999) | 0.50 in (2020) |
| May 21 | 91.0°F (2000) | 33.1°F (2009) | 0.51 in (2016) |
| May 22 | 96.1°F (2001) | 36.0°F (2009) | 0.19 in (2004) |
| May 23 | 100.9°F (2001) | 36.0°F (2013) | 0.18 in (2006) |
| May 24 | 96.1°F (2001) | 39.0°F (2002) | 0.16 in (2019) |
| May 25 | 91.9°F (2001) | 41.0°F (2005) | 0.29 in (2011) |
| May 26 | 96.1°F (2001) | 35.1°F (1999) | 0.19 in (2010) |
| May 27 | 93.9°F (2005) | 37.9°F (1999) | 0.16 in (2002) |
| May 28 | 96.1°F (2005) | 37.0°F (1998) | 0.31 in (2010) |
| May 29 | 96.1°F (2009) | 37.0°F (2001) | 0.12 in (2013) |
| May 30 | 98.1°F (2009) | 39.0°F (2001) | 0.22 in (2000) |
| May 31 | 95.0°F (2025) | 41.0°F (2024) | 0.39 in (2000) |