September weather in Blackfoot, ID
The average temperature in Blackfoot in September is 60.6°F (46.0°F–75.1°F). Average precipitation: 0.97 inches.
September is a fall month in Blackfoot, and is warmer than the annual average of 47.2°F. Daily temperatures swing about 29.1°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
75.1°F
Avg Low
46.0°F
Precipitation
0.97 in
Daylight
12h 17m
September records in Blackfoot
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2022) | 32.0°F (1908) | 0.36 in (1963) |
| September 2 | 96.1°F (1950) | 30.9°F (1910) | 0.45 in (2012) |
| September 3 | 98.1°F (1950) | 33.1°F (1964) | 0.65 in (1971) |
| September 4 | 99.0°F (2022) | 30.9°F (1921) | 0.88 in (2023) |
| September 5 | 93.9°F (1955) | 25.0°F (1912) | 0.30 in (1909) |
| September 6 | 97.0°F (1955) | 28.9°F (1996) | 0.40 in (1970) |
| September 7 | 98.1°F (2022) | 28.0°F (1992) | 0.98 in (1971) |
| September 8 | 98.1°F (2022) | 28.0°F (1962) | 1.24 in (1913) |
| September 9 | 91.0°F (2021) | 28.9°F (1929) | 0.47 in (1950) |
| September 10 | 93.0°F (2021) | 25.0°F (1896) | 0.60 in (2005) |
| September 11 | 91.9°F (1963) | 28.9°F (1916) | 0.93 in (1997) |
| September 12 | 93.0°F (1953) | 26.1°F (1906) | 1.10 in (1942) |
| September 13 | 93.9°F (1948) | 26.1°F (1914) | 0.45 in (2001) |
| September 14 | 96.1°F (1990) | 27.0°F (1915) | 0.43 in (2001) |
| September 15 | 89.1°F (1953) | 21.9°F (1936) | 0.95 in (2017) |
| September 16 | 90.0°F (1937) | 21.9°F (1936) | 0.92 in (1996) |
| September 17 | 90.0°F (1956) | 26.1°F (1921) | 0.38 in (1908) |
| September 18 | 91.0°F (1937) | 23.0°F (1971) | 1.22 in (1947) |
| September 19 | 91.0°F (1956) | 19.9°F (1983) | 0.70 in (1929) |
| September 20 | 86.0°F (1917) | 21.9°F (1983) | 0.42 in (1914) |
| September 21 | 89.1°F (1936) | 21.0°F (1912) | 1.14 in (2017) |
| September 22 | 89.1°F (1905) | 21.0°F (1995) | 0.66 in (2022) |
| September 23 | 91.9°F (1905) | 25.0°F (1909) | 0.76 in (2016) |
| September 24 | 87.1°F (1922) | 23.0°F (1913) | 0.51 in (1930) |
| September 25 | 88.0°F (1952) | 12.0°F (1926) | 1.02 in (1915) |
| September 26 | 90.0°F (1952) | 21.0°F (1970) | 0.88 in (1982) |
| September 27 | 87.1°F (1969) | 19.9°F (1900) | 0.94 in (2014) |
| September 28 | 88.0°F (1938) | 21.0°F (1985) | 0.60 in (1909) |
| September 29 | 89.1°F (1989) | 21.0°F (1985) | 0.45 in (2019) |
| September 30 | 88.0°F (1946) | 21.0°F (1985) | 0.96 in (1926) |