September weather in Smelterville, ID
The average temperature in Smelterville in September is 57.2°F (41.0°F–73.4°F). Average precipitation: 1.32 inches.
September is a fall month in Smelterville, and is warmer than the annual average of 46.7°F. Daily temperatures swing about 32.4°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
73.4°F
Avg Low
41.0°F
Precipitation
1.32 in
Daylight
12h 19m
September records in Smelterville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2022) | 30.9°F (1914) | 0.88 in (1927) |
| September 2 | 102.0°F (2025) | 30.9°F (1910) | 0.64 in (1980) |
| September 3 | 105.1°F (2025) | 30.0°F (1969) | 0.74 in (1994) |
| September 4 | 102.9°F (2025) | 35.1°F (1956) | 0.58 in (2014) |
| September 5 | 97.0°F (1924) | 35.1°F (1956) | 1.08 in (1940) |
| September 6 | 97.0°F (1988) | 26.1°F (1969) | 0.90 in (1937) |
| September 7 | 97.0°F (2024) | 28.0°F (1929) | 0.72 in (1926) |
| September 8 | 98.1°F (2024) | 32.0°F (2020) | 0.60 in (1925) |
| September 9 | 97.0°F (1958) | 33.1°F (1962) | 0.96 in (1938) |
| September 10 | 93.0°F (1935) | 28.0°F (1913) | 0.97 in (1927) |
| September 11 | 98.1°F (1996) | 27.0°F (1906) | 1.20 in (1927) |
| September 12 | 97.0°F (1953) | 30.0°F (1986) | 2.10 in (2024) |
| September 13 | 93.9°F (1944) | 28.0°F (1921) | 0.83 in (1927) |
| September 14 | 93.0°F (1948) | 24.1°F (1921) | 0.72 in (1980) |
| September 15 | 96.1°F (1924) | 19.9°F (1969) | 0.89 in (1965) |
| September 16 | 96.1°F (1937) | 24.1°F (1969) | 1.11 in (1949) |
| September 17 | 97.0°F (1981) | 28.9°F (1965) | 1.25 in (1985) |
| September 18 | 100.0°F (1938) | 27.0°F (1971) | 1.63 in (1954) |
| September 19 | 99.0°F (1938) | 28.0°F (1957) | 0.85 in (2017) |
| September 20 | 95.0°F (1917) | 25.0°F (1983) | 1.03 in (1969) |
| September 21 | 96.1°F (1939) | 25.0°F (2013) | 0.58 in (2008) |
| September 22 | 95.0°F (1938) | 28.0°F (1932) | 1.11 in (1984) |
| September 23 | 93.0°F (1905) | 28.0°F (2000) | 1.15 in (1992) |
| September 24 | 97.0°F (1938) | 10.9°F (1926) | 1.70 in (1917) |
| September 25 | 91.0°F (1943) | 19.9°F (1926) | 0.67 in (1945) |
| September 26 | 93.9°F (1943) | 23.0°F (1908) | 0.78 in (1905) |
| September 27 | 91.0°F (1957) | 26.1°F (1999) | 0.55 in (2019) |
| September 28 | 89.1°F (1963) | 26.1°F (1984) | 1.12 in (1995) |
| September 29 | 93.9°F (1963) | 23.0°F (1985) | 1.98 in (1909) |
| September 30 | 86.0°F (1938) | 26.1°F (1985) | 2.31 in (2005) |