May weather in Seneca, OR
The average temperature in Seneca in May is 46.8°F (31.7°F–61.8°F). Average precipitation: 1.71 inches.
May is a spring month in Seneca, and is warmer than the annual average of 40.5°F. Daily temperatures swing about 30.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 34m. For travel, May is cool.
Avg High
61.8°F
Avg Low
31.7°F
Precipitation
1.71 in
Daylight
14h 34m
May records in Seneca
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 75.9°F (1998) | 10.9°F (1953) | 0.25 in (1987) |
| May 2 | 75.0°F (2004) | 10.9°F (1954) | 0.24 in (1980) |
| May 3 | 78.1°F (1913) | 8.1°F (2013) | 0.45 in (1998) |
| May 4 | 81.0°F (1966) | 14.0°F (1959) | 0.80 in (1956) |
| May 5 | 82.0°F (1966) | 12.9°F (1965) | 0.68 in (1983) |
| May 6 | 82.0°F (1990) | 12.0°F (1964) | 0.51 in (1998) |
| May 7 | 84.0°F (1992) | 14.0°F (1968) | 0.43 in (1948) |
| May 8 | 81.0°F (1987) | 9.0°F (2020) | 0.52 in (1979) |
| May 9 | 80.1°F (1987) | 18.0°F (1990) | 0.35 in (1963) |
| May 10 | 79.0°F (1969) | 10.0°F (2014) | 1.29 in (1989) |
| May 11 | 80.1°F (2020) | 15.1°F (1953) | 0.60 in (1951) |
| May 12 | 81.0°F (2001) | 16.0°F (1985) | 0.50 in (2015) |
| May 13 | 82.9°F (2013) | 19.0°F (1985) | 0.60 in (1957) |
| May 14 | 86.0°F (1973) | 12.9°F (1952) | 0.50 in (1969) |
| May 15 | 84.0°F (1973) | 18.0°F (1966) | 1.17 in (2011) |
| May 16 | 84.0°F (2008) | 16.0°F (1965) | 0.67 in (2011) |
| May 17 | 87.1°F (2008) | 19.0°F (1965) | 0.95 in (2019) |
| May 18 | 87.1°F (1954) | 17.1°F (1966) | 0.75 in (1956) |
| May 19 | 89.1°F (1934) | 17.1°F (1960) | 0.70 in (1991) |
| May 20 | 80.1°F (1936) | 18.0°F (1976) | 0.70 in (2019) |
| May 21 | 81.0°F (1958) | 10.0°F (1931) | 0.62 in (2018) |
| May 22 | 88.0°F (1963) | 10.0°F (2013) | 0.80 in (2015) |
| May 23 | 82.0°F (1958) | 6.1°F (1944) | 0.54 in (2004) |
| May 24 | 88.0°F (2001) | 15.1°F (1964) | 0.44 in (1997) |
| May 25 | 84.9°F (2001) | 18.0°F (1964) | 1.16 in (1989) |
| May 26 | 84.0°F (1958) | 12.9°F (1964) | 0.67 in (1962) |
| May 27 | 84.9°F (1986) | 19.0°F (1931) | 0.65 in (2008) |
| May 28 | 86.0°F (1965) | 15.1°F (1954) | 0.67 in (2008) |
| May 29 | 88.0°F (1983) | 18.0°F (1944) | 0.52 in (1988) |
| May 30 | 87.1°F (1983) | 18.0°F (1955) | 0.50 in (1989) |
| May 31 | 84.0°F (1972) | 17.1°F (1944) | 0.86 in (1983) |