May weather in Bellingham, WA
The average temperature in Bellingham in May is 56.0°F (46.4°F–65.5°F). Average precipitation: 2.33 inches.
May is a spring month in Bellingham, and is warmer than the annual average of 51.9°F. Daily temperatures swing about 19.1°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 15h 3m. For travel, May is a comfortable month to visit.
Avg High
65.5°F
Avg Low
46.4°F
Precipitation
2.33 in
Daylight
15h 3m
May records in Bellingham
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 75.0°F (2014) | 35.1°F (2011) | 0.82 in (1999) |
| May 2 | 86.0°F (2016) | 34.0°F (1997) | 0.62 in (2022) |
| May 3 | 84.9°F (2016) | 36.0°F (2006) | 0.77 in (1986) |
| May 4 | 71.1°F (2017) | 35.1°F (2011) | 0.35 in (2014) |
| May 5 | 73.9°F (1990) | 34.0°F (2010) | 0.85 in (2014) |
| May 6 | 78.1°F (2013) | 36.0°F (2001) | 0.87 in (1993) |
| May 7 | 77.0°F (2013) | 34.0°F (2002) | 0.65 in (2009) |
| May 8 | 75.0°F (2016) | 34.0°F (2023) | 0.57 in (1991) |
| May 9 | 75.9°F (2019) | 36.0°F (2008) | 0.66 in (2014) |
| May 10 | 78.1°F (2019) | 34.0°F (1999) | 0.60 in (2000) |
| May 11 | 80.1°F (2019) | 34.0°F (2012) | 0.73 in (2011) |
| May 12 | 75.0°F (2016) | 30.0°F (1992) | 0.69 in (2011) |
| May 13 | 73.9°F (2014) | 37.0°F (2006) | 1.18 in (1988) |
| May 14 | 82.0°F (2018) | 37.9°F (2006) | 0.73 in (2008) |
| May 15 | 82.0°F (2018) | 33.1°F (2008) | 0.40 in (2022) |
| May 16 | 79.0°F (2006) | 37.9°F (2002) | 1.40 in (1988) |
| May 17 | 82.9°F (2008) | 39.9°F (2011) | 0.91 in (2003) |
| May 18 | 81.0°F (2008) | 37.9°F (2011) | 0.44 in (1989) |
| May 19 | 73.0°F (1993) | 37.9°F (2012) | 0.65 in (2009) |
| May 20 | 73.9°F (1994) | 37.0°F (2021) | 1.16 in (1986) |
| May 21 | 75.9°F (1995) | 39.0°F (2009) | 0.77 in (2024) |
| May 22 | 75.9°F (2017) | 39.9°F (2010) | 0.67 in (1996) |
| May 23 | 75.9°F (2017) | 39.0°F (2013) | 0.76 in (2014) |
| May 24 | 77.0°F (1999) | 39.9°F (2000) | 0.39 in (1989) |
| May 25 | 77.0°F (1995) | 39.9°F (2017) | 0.74 in (1998) |
| May 26 | 78.1°F (1995) | 42.1°F (1990) | 0.59 in (2014) |
| May 27 | 80.1°F (2005) | 41.0°F (2020) | 1.01 in (1989) |
| May 28 | 82.9°F (2017) | 41.0°F (2009) | 1.59 in (2010) |
| May 29 | 82.9°F (2017) | 39.0°F (2021) | 0.79 in (1997) |
| May 30 | 77.0°F (2007) | 42.1°F (2014) | 0.72 in (1987) |
| May 31 | 75.9°F (2007) | 42.1°F (2008) | 0.90 in (1987) |