May weather in Blaine, WA
The average temperature in Blaine in May is 55.7°F (47.3°F–64.0°F). Average precipitation: 2.57 inches.
May is a spring month in Blaine, and is warmer than the annual average of 50.9°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 15h 4m. For travel, May is a comfortable month to visit.
Avg High
64.0°F
Avg Low
47.3°F
Precipitation
2.57 in
Daylight
15h 4m
May records in Blaine
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 78.1°F (1976) | 25.0°F (1899) | 0.85 in (1940) |
| May 2 | 86.0°F (2016) | 23.0°F (1899) | 0.84 in (1963) |
| May 3 | 81.0°F (2016) | 32.0°F (1924) | 1.05 in (1948) |
| May 4 | 73.0°F (1923) | 30.9°F (1930) | 3.54 in (2014) |
| May 5 | 78.1°F (1953) | 30.9°F (1933) | 0.83 in (1997) |
| May 6 | 75.9°F (1920) | 28.0°F (2010) | 0.71 in (1931) |
| May 7 | 77.0°F (1969) | 28.9°F (2010) | 0.59 in (1974) |
| May 8 | 78.1°F (2020) | 30.9°F (1930) | 1.14 in (1911) |
| May 9 | 80.1°F (1925) | 30.9°F (1922) | 0.67 in (1913) |
| May 10 | 81.0°F (2019) | 30.0°F (1999) | 0.99 in (1899) |
| May 11 | 80.1°F (2020) | 28.0°F (1899) | 1.49 in (1951) |
| May 12 | 81.0°F (1926) | 28.9°F (1899) | 0.67 in (2011) |
| May 13 | 84.9°F (1959) | 32.0°F (1899) | 1.43 in (1988) |
| May 14 | 82.0°F (1912) | 21.0°F (1899) | 1.00 in (2008) |
| May 15 | 75.9°F (1958) | 26.1°F (1899) | 1.07 in (2017) |
| May 16 | 75.0°F (1976) | 33.1°F (1899) | 0.99 in (1948) |
| May 17 | 82.0°F (2006) | 32.0°F (1929) | 1.21 in (1945) |
| May 18 | 82.9°F (1963) | 32.0°F (1899) | 0.70 in (1908) |
| May 19 | 80.1°F (1961) | 33.1°F (1899) | 0.76 in (1996) |
| May 20 | 79.0°F (1963) | 32.0°F (1899) | 1.14 in (1912) |
| May 21 | 82.0°F (1963) | 30.9°F (1909) | 0.95 in (2007) |
| May 22 | 86.0°F (1914) | 32.0°F (1909) | 0.92 in (1905) |
| May 23 | 82.9°F (1969) | 30.0°F (1899) | 0.80 in (1933) |
| May 24 | 82.0°F (1947) | 34.0°F (1950) | 0.55 in (1974) |
| May 25 | 80.1°F (1947) | 33.1°F (1899) | 0.79 in (1919) |
| May 26 | 84.0°F (1947) | 34.0°F (1927) | 0.93 in (1984) |
| May 27 | 77.0°F (1947) | 35.1°F (1899) | 1.43 in (1998) |
| May 28 | 84.0°F (1983) | 33.1°F (1899) | 1.02 in (2014) |
| May 29 | 84.0°F (1983) | 30.0°F (1899) | 1.50 in (1985) |
| May 30 | 84.0°F (1983) | 32.0°F (1899) | 1.08 in (1958) |
| May 31 | 81.0°F (1922) | 37.0°F (1899) | 1.03 in (1977) |