September weather in Monument, OR
The average temperature in Monument in September is 62.7°F (41.7°F–83.7°F). Average precipitation: 0.58 inches.
September is a fall month in Monument, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 42°F between overnight low and afternoon high. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
83.7°F
Avg Low
41.7°F
Precipitation
0.58 in
Daylight
12h 18m
September records in Monument
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (1987) | 33.1°F (1999) | 0.30 in (1961) |
| September 2 | 104.0°F (2003) | 33.1°F (1999) | 0.69 in (2000) |
| September 3 | 109.0°F (2003) | 33.1°F (1999) | 0.18 in (1997) |
| September 4 | 105.1°F (2003) | 34.0°F (1969) | 0.46 in (1970) |
| September 5 | 102.0°F (2006) | 34.0°F (1962) | 0.52 in (2007) |
| September 6 | 102.9°F (2011) | 28.0°F (1992) | 0.26 in (1984) |
| September 7 | 102.0°F (2011) | 33.1°F (1976) | 0.73 in (1973) |
| September 8 | 100.0°F (1981) | 30.9°F (1976) | 0.55 in (2003) |
| September 9 | 100.0°F (1981) | 30.0°F (1962) | 0.33 in (1994) |
| September 10 | 102.0°F (1990) | 33.1°F (2007) | 0.20 in (2010) |
| September 11 | 99.0°F (1996) | 30.9°F (2012) | 0.18 in (1967) |
| September 12 | 105.1°F (2011) | 28.9°F (2012) | 0.23 in (1966) |
| September 13 | 104.0°F (2011) | 30.9°F (1970) | 0.72 in (1982) |
| September 14 | 102.9°F (2000) | 23.0°F (1970) | 0.55 in (1966) |
| September 15 | 100.9°F (1998) | 27.0°F (1970) | 0.52 in (1963) |
| September 16 | 100.9°F (2013) | 30.9°F (1973) | 0.17 in (1963) |
| September 17 | 102.0°F (2008) | 23.0°F (1965) | 0.24 in (1985) |
| September 18 | 100.9°F (1981) | 24.1°F (1965) | 0.29 in (1978) |
| September 19 | 98.1°F (1981) | 24.1°F (1965) | 0.19 in (1973) |
| September 20 | 98.1°F (2014) | 26.1°F (1983) | 0.50 in (1982) |
| September 21 | 100.9°F (2012) | 27.0°F (1983) | 0.24 in (2006) |
| September 22 | 99.0°F (1967) | 27.0°F (1961) | 0.58 in (1976) |
| September 23 | 100.0°F (2011) | 28.0°F (1993) | 0.45 in (2014) |
| September 24 | 104.0°F (2009) | 25.0°F (1961) | 0.47 in (1986) |
| September 25 | 100.0°F (1987) | 23.0°F (2000) | 0.55 in (2013) |
| September 26 | 96.1°F (2016) | 27.0°F (1972) | 0.21 in (1977) |
| September 27 | 96.1°F (2010) | 26.1°F (1999) | 0.44 in (1966) |
| September 28 | 95.0°F (1963) | 25.0°F (1999) | 0.70 in (1981) |
| September 29 | 95.0°F (1967) | 23.0°F (1983) | 0.57 in (1977) |
| September 30 | 96.1°F (1963) | 24.1°F (1983) | 0.43 in (1994) |