May weather in Sisters, OR
The average temperature in Sisters in May is 50.4°F (34.4°F–66.3°F). Average precipitation: 1.53 inches.
May is a spring month in Sisters, and is warmer than the annual average of 45.5°F. Daily temperatures swing about 31.9°F between overnight low and afternoon high. Daylight averages about 14h 35m. For travel, May is cool.
Avg High
66.3°F
Avg Low
34.4°F
Precipitation
1.53 in
Daylight
14h 35m
May records in Sisters
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.0°F (1981) | 12.0°F (1975) | 0.11 in (1984) |
| May 2 | 84.0°F (2014) | 19.0°F (1969) | 0.25 in (2024) |
| May 3 | 84.9°F (1966) | 14.0°F (1964) | 0.44 in (2009) |
| May 4 | 84.9°F (1966) | 14.0°F (1982) | 0.94 in (1998) |
| May 5 | 84.9°F (1992) | 17.1°F (1982) | 0.75 in (2014) |
| May 6 | 84.9°F (1990) | 15.1°F (1964) | 0.11 in (1961) |
| May 7 | 89.1°F (1992) | 18.0°F (1964) | 0.20 in (1963) |
| May 8 | 86.0°F (1992) | 17.1°F (1984) | 0.51 in (2005) |
| May 9 | 84.0°F (1969) | 21.0°F (1985) | 0.17 in (2014) |
| May 10 | 84.9°F (1969) | 19.0°F (1999) | 0.43 in (2004) |
| May 11 | 84.9°F (1994) | 19.9°F (1970) | 0.14 in (2010) |
| May 12 | 89.1°F (2001) | 18.0°F (1985) | 0.59 in (2003) |
| May 13 | 89.1°F (1997) | 18.0°F (1985) | 0.11 in (1991) |
| May 14 | 87.1°F (1973) | 18.0°F (1985) | 0.26 in (1996) |
| May 15 | 87.1°F (2012) | 19.9°F (1985) | 0.50 in (2005) |
| May 16 | 93.0°F (2008) | 19.9°F (1984) | 0.45 in (1991) |
| May 17 | 91.9°F (2006) | 21.9°F (1965) | 0.72 in (1991) |
| May 18 | 89.1°F (2009) | 23.0°F (1977) | 0.61 in (2011) |
| May 19 | 87.1°F (2008) | 21.9°F (1982) | 1.11 in (1981) |
| May 20 | 87.1°F (1967) | 19.9°F (1976) | 0.56 in (1998) |
| May 21 | 84.0°F (1967) | 23.0°F (1973) | 0.25 in (2015) |
| May 22 | 84.0°F (2001) | 19.9°F (1960) | 0.22 in (2008) |
| May 23 | 95.0°F (2001) | 19.0°F (1964) | 0.58 in (1990) |
| May 24 | 93.9°F (2001) | 24.1°F (1972) | 1.00 in (1981) |
| May 25 | 90.0°F (2001) | 10.9°F (1975) | 0.68 in (1993) |
| May 26 | 87.1°F (2001) | 23.0°F (1964) | 0.71 in (1971) |
| May 27 | 91.0°F (1986) | 25.0°F (1982) | 0.70 in (1993) |
| May 28 | 88.0°F (1972) | 21.9°F (1974) | 0.45 in (2008) |
| May 29 | 89.1°F (1986) | 24.1°F (1976) | 0.57 in (1998) |
| May 30 | 93.0°F (1986) | 23.0°F (1974) | 0.23 in (2019) |
| May 31 | 98.1°F (1986) | 21.0°F (1984) | 0.76 in (2009) |