September weather in Waterloo, OR
The average temperature in Waterloo in September is °F (°F–°F). Average precipitation: 1.72 inches.
September is a fall month in Waterloo, and is cooler than the annual average of 0°F. Expect about 6 days with precipitation. Daylight averages about 12h 17m.
Avg High
°F
Avg Low
°F
Precipitation
1.72 in
Daylight
12h 17m
September records in Waterloo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 1.68 in (1971) |
| September 2 | — | — | 1.58 in (1941) |
| September 3 | — | — | 0.50 in (2000) |
| September 4 | — | — | 0.53 in (1970) |
| September 5 | — | — | 0.96 in (1945) |
| September 6 | — | — | 0.88 in (1927) |
| September 7 | — | — | 0.70 in (1947) |
| September 8 | — | — | 2.00 in (1925) |
| September 9 | — | — | 0.42 in (2003) |
| September 10 | — | — | 0.83 in (1978) |
| September 11 | — | — | 0.66 in (1927) |
| September 12 | — | — | 0.98 in (1928) |
| September 13 | — | — | 0.62 in (1958) |
| September 14 | — | — | 0.60 in (1976) |
| September 15 | — | — | 1.67 in (1996) |
| September 16 | — | — | 0.99 in (1946) |
| September 17 | — | — | 0.62 in (1997) |
| September 18 | — | — | 0.87 in (1968) |
| September 19 | — | — | 1.19 in (1988) |
| September 20 | — | — | 0.96 in (1945) |
| September 21 | — | — | 0.70 in (1970) |
| September 22 | — | — | 1.11 in (1972) |
| September 23 | — | — | 0.90 in (1934) |
| September 24 | — | — | 0.92 in (1927) |
| September 25 | — | — | 0.74 in (1986) |
| September 26 | — | — | 0.72 in (1986) |
| September 27 | — | — | 1.39 in (1940) |
| September 28 | — | — | 0.92 in (1995) |
| September 29 | — | — | 0.97 in (2007) |
| September 30 | — | — | 0.59 in (1967) |