May weather in Deer Park, WA
The average temperature in Deer Park in May is 53.3°F (39.2°F–67.4°F). Average precipitation: 1.92 inches.
May is a spring month in Deer Park, and is warmer than the annual average of 45.6°F. Daily temperatures swing about 28.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 57m. For travel, May is a comfortable month to visit.
Avg High
67.4°F
Avg Low
39.2°F
Precipitation
1.92 in
Daylight
14h 57m
May records in Deer Park
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 77.0°F (2014) | 18.1°F (2013) | 0.20 in (2010) |
| May 2 | 90.0°F (2023) | 21.9°F (2008) | 0.39 in (1999) |
| May 3 | 86.0°F (2023) | 28.2°F (2015) | 0.37 in (2012) |
| May 4 | 82.9°F (2023) | 25.0°F (2007) | 0.23 in (2003) |
| May 5 | 78.1°F (2013) | 23.0°F (2010) | 0.43 in (2024) |
| May 6 | 82.9°F (2013) | 25.0°F (2001) | 0.74 in (2009) |
| May 7 | 84.9°F (2013) | 26.1°F (2003) | 0.52 in (2011) |
| May 8 | 82.9°F (2013) | 21.0°F (2002) | 0.11 in (2014) |
| May 9 | 84.9°F (2013) | 23.0°F (2006) | 0.54 in (2014) |
| May 10 | 86.0°F (2013) | 25.0°F (2006) | 0.39 in (2005) |
| May 11 | 84.9°F (2013) | 23.0°F (2012) | 0.34 in (2000) |
| May 12 | 82.0°F (2001) | 25.2°F (2022) | 0.30 in (2022) |
| May 13 | 82.9°F (2018) | 26.1°F (2006) | 0.48 in (2020) |
| May 14 | 84.9°F (2012) | 30.0°F (2007) | 0.90 in (2001) |
| May 15 | 89.1°F (2006) | 27.0°F (2009) | 0.59 in (2011) |
| May 16 | 91.0°F (2006) | 28.0°F (2002) | 0.79 in (2011) |
| May 17 | 89.1°F (2006) | 28.9°F (2001) | 1.21 in (2019) |
| May 18 | 91.0°F (2006) | 29.1°F (2021) | 0.41 in (2005) |
| May 19 | 88.0°F (2023) | 25.2°F (2021) | 0.35 in (2025) |
| May 20 | 89.1°F (2023) | 28.2°F (2024) | 1.04 in (2020) |
| May 21 | 82.9°F (2015) | 25.0°F (2010) | 0.52 in (2004) |
| May 22 | 84.9°F (2018) | 25.0°F (2010) | 0.51 in (2024) |
| May 23 | 89.1°F (2001) | 28.9°F (2010) | 0.42 in (2016) |
| May 24 | 90.0°F (2003) | 25.0°F (2010) | 0.44 in (2019) |
| May 25 | 86.0°F (2025) | 28.0°F (2007) | 0.47 in (2015) |
| May 26 | 84.0°F (2001) | 33.1°F (2007) | 0.60 in (2011) |
| May 27 | 81.0°F (2001) | 33.1°F (1999) | 0.55 in (2010) |
| May 28 | 87.1°F (2005) | 34.0°F (2011) | 0.29 in (2006) |
| May 29 | 87.1°F (2017) | 30.9°F (2001) | 0.37 in (2010) |
| May 30 | 88.0°F (2017) | 27.1°F (2024) | 0.70 in (2003) |
| May 31 | 87.1°F (2025) | 31.1°F (2024) | 0.75 in (2020) |