September weather in Spencer, ID
The average temperature in Spencer in September is 59.7°F (44.8°F–74.6°F). Average precipitation: 0.89 inches.
September is a fall month in Spencer, and is warmer than the annual average of 45.3°F. Daily temperatures swing about 29.8°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
74.6°F
Avg Low
44.8°F
Precipitation
0.89 in
Daylight
12h 17m
September records in Spencer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2022) | 35.1°F (2020) | 0.55 in (2000) |
| September 2 | 93.0°F (1950) | 32.0°F (2008) | 0.60 in (2000) |
| September 3 | 95.0°F (1950) | 34.0°F (1964) | 0.57 in (1990) |
| September 4 | 95.0°F (2022) | 26.1°F (1929) | 0.58 in (1992) |
| September 5 | 93.9°F (2020) | 32.0°F (1929) | 0.64 in (1930) |
| September 6 | 95.0°F (2020) | 28.0°F (1929) | 0.57 in (1978) |
| September 7 | 93.9°F (2022) | 19.9°F (1929) | 0.96 in (1930) |
| September 8 | 91.0°F (2022) | 24.1°F (1929) | 0.50 in (1945) |
| September 9 | 90.0°F (2021) | 21.9°F (1929) | 1.16 in (1950) |
| September 10 | 91.0°F (2021) | 32.0°F (1970) | 0.43 in (1998) |
| September 11 | 87.1°F (1953) | 26.1°F (1929) | 1.21 in (1976) |
| September 12 | 90.0°F (1990) | 28.0°F (2014) | 1.16 in (1985) |
| September 13 | 88.0°F (1990) | 25.0°F (1926) | 1.00 in (1980) |
| September 14 | 90.0°F (1990) | 27.0°F (1926) | 0.31 in (1966) |
| September 15 | 90.0°F (2000) | 21.0°F (1936) | 1.32 in (1977) |
| September 16 | 88.0°F (1981) | 26.1°F (1936) | 1.08 in (1996) |
| September 17 | 91.9°F (1932) | 24.1°F (1965) | 0.51 in (2005) |
| September 18 | 87.1°F (1981) | 14.0°F (1965) | 0.94 in (1961) |
| September 19 | 86.0°F (1937) | 21.9°F (1945) | 0.39 in (1948) |
| September 20 | 82.9°F (1939) | 19.0°F (1983) | 0.54 in (1940) |
| September 21 | 84.0°F (1927) | 23.0°F (1926) | 0.58 in (2017) |
| September 22 | 86.0°F (1987) | 19.9°F (1926) | 0.61 in (2022) |
| September 23 | 87.1°F (1987) | 15.1°F (1926) | 0.78 in (1941) |
| September 24 | 87.1°F (1987) | 1.9°F (1926) | 0.20 in (2005) |
| September 25 | 87.1°F (2001) | 6.1°F (1926) | 0.44 in (1981) |
| September 26 | 84.0°F (2001) | 18.0°F (1934) | 0.34 in (1982) |
| September 27 | 84.0°F (2001) | 10.9°F (1926) | 0.99 in (2014) |
| September 28 | 84.0°F (1938) | 12.9°F (1928) | 0.79 in (1940) |
| September 29 | 84.9°F (2024) | 15.1°F (1985) | 0.60 in (1994) |
| September 30 | 84.9°F (1957) | 21.0°F (1985) | 1.02 in (1983) |