May weather in Okanogan, WA
The average temperature in Okanogan in May is 58.8°F (45.1°F–72.4°F). Average precipitation: 1.19 inches.
May is a spring month in Okanogan, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 27.3°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 15h 0m. For travel, May is a comfortable month to visit.
Avg High
72.4°F
Avg Low
45.1°F
Precipitation
1.19 in
Daylight
15h 0m
May records in Okanogan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (1998) | 22.1°F (2008) | 0.45 in (2003) |
| May 2 | 86.0°F (2023) | 27.1°F (2008) | 0.67 in (2007) |
| May 3 | 86.0°F (2016) | 27.0°F (2002) | 0.14 in (2012) |
| May 4 | 90.0°F (2023) | 24.3°F (2010) | 0.52 in (2003) |
| May 5 | 87.1°F (1998) | 25.0°F (1999) | 0.31 in (2009) |
| May 6 | 86.0°F (1998) | 23.0°F (2002) | 0.40 in (1999) |
| May 7 | 90.0°F (2013) | 28.2°F (2010) | 0.09 in (2010) |
| May 8 | 89.1°F (2013) | 27.0°F (1999) | 0.15 in (2014) |
| May 9 | 90.0°F (2013) | 27.0°F (1999) | 0.30 in (2005) |
| May 10 | 91.0°F (2013) | 26.1°F (1999) | 0.36 in (2005) |
| May 11 | 89.1°F (2019) | 30.9°F (1999) | 0.27 in (2017) |
| May 12 | 89.1°F (2024) | 30.0°F (2004) | 0.35 in (2020) |
| May 13 | 88.0°F (2018) | 28.2°F (2009) | 0.29 in (2015) |
| May 14 | 89.1°F (2023) | 34.0°F (2002) | 0.12 in (2001) |
| May 15 | 89.1°F (2012) | 33.1°F (2009) | 0.78 in (2005) |
| May 16 | 93.9°F (2006) | 30.9°F (1998) | 1.32 in (2019) |
| May 17 | 95.0°F (2006) | 33.1°F (2001) | 1.03 in (2004) |
| May 18 | 96.1°F (2006) | 28.9°F (2003) | 0.41 in (2013) |
| May 19 | 91.9°F (2023) | 30.0°F (2003) | 0.67 in (2010) |
| May 20 | 93.9°F (2023) | 32.0°F (2007) | 0.33 in (2006) |
| May 21 | 87.1°F (2015) | 29.1°F (2010) | 0.37 in (2013) |
| May 22 | 91.0°F (2001) | 32.0°F (2010) | 0.51 in (2024) |
| May 23 | 96.1°F (2001) | 32.0°F (2005) | 0.12 in (2006) |
| May 24 | 91.0°F (2001) | 31.1°F (2010) | 0.11 in (2019) |
| May 25 | 90.0°F (2001) | 35.1°F (2010) | 0.57 in (2019) |
| May 26 | 90.0°F (2001) | 36.0°F (2024) | 0.83 in (1998) |
| May 27 | 86.0°F (2005) | 36.0°F (2011) | 0.98 in (2010) |
| May 28 | 93.9°F (2005) | 39.0°F (1998) | 0.80 in (2010) |
| May 29 | 91.9°F (2009) | 33.1°F (2001) | 0.52 in (2015) |
| May 30 | 91.9°F (2009) | 33.1°F (2024) | 0.12 in (2000) |
| May 31 | 89.1°F (2007) | 39.9°F (2004) | 0.54 in (2020) |