September weather in Richfield, ID
The average temperature in Richfield in September is 60.2°F (43.1°F–77.3°F). Average precipitation: 0.49 inches.
September is a fall month in Richfield, and is warmer than the annual average of 46.1°F. Daily temperatures swing about 34.2°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
77.3°F
Avg Low
43.1°F
Precipitation
0.49 in
Daylight
12h 17m
September records in Richfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1924) | 34.0°F (1937) | 0.12 in (1964) |
| September 2 | 99.0°F (1995) | 33.1°F (1910) | 0.17 in (1985) |
| September 3 | 99.0°F (2022) | 30.0°F (2008) | 0.28 in (1913) |
| September 4 | 97.0°F (2017) | 33.1°F (1943) | 0.84 in (1995) |
| September 5 | 96.1°F (1998) | 27.0°F (1912) | 0.38 in (1978) |
| September 6 | 102.9°F (2022) | 28.9°F (1921) | 0.92 in (1978) |
| September 7 | 99.0°F (2022) | 28.0°F (1910) | 0.22 in (1985) |
| September 8 | 93.9°F (1923) | 30.9°F (1922) | 0.72 in (1913) |
| September 9 | 98.1°F (2021) | 28.9°F (1914) | 1.08 in (1991) |
| September 10 | 97.0°F (2005) | 25.0°F (1916) | 0.55 in (1956) |
| September 11 | 93.0°F (1923) | 26.1°F (1910) | 1.01 in (1976) |
| September 12 | 99.0°F (1990) | 25.0°F (1949) | 0.53 in (1998) |
| September 13 | 93.9°F (1948) | 23.0°F (1914) | 0.42 in (1959) |
| September 14 | 95.0°F (1923) | 21.0°F (1915) | 0.61 in (2016) |
| September 15 | 99.0°F (1990) | 23.0°F (1936) | 0.87 in (1914) |
| September 16 | 93.9°F (1995) | 23.0°F (1936) | 0.26 in (2015) |
| September 17 | 91.9°F (1995) | 21.0°F (1965) | 0.75 in (1919) |
| September 18 | 91.9°F (1984) | 25.0°F (1911) | 1.21 in (1948) |
| September 19 | 91.9°F (1984) | 23.0°F (2006) | 0.67 in (1961) |
| September 20 | 93.0°F (1922) | 24.1°F (1947) | 0.41 in (1982) |
| September 21 | 91.9°F (1918) | 24.1°F (1912) | 0.23 in (1945) |
| September 22 | 89.1°F (1966) | 25.0°F (1993) | 0.46 in (2023) |
| September 23 | 91.0°F (1987) | 21.9°F (1977) | 0.74 in (2016) |
| September 24 | 93.0°F (1987) | 23.0°F (1913) | 0.32 in (1948) |
| September 25 | 91.9°F (2001) | 19.9°F (1912) | 0.53 in (1948) |
| September 26 | 91.9°F (1922) | 14.0°F (1934) | 1.15 in (1915) |
| September 27 | 91.9°F (2015) | 21.0°F (1934) | 0.45 in (1972) |
| September 28 | 91.9°F (2024) | 21.9°F (1945) | 0.06 in (1989) |
| September 29 | 89.1°F (1994) | 21.0°F (1922) | 1.03 in (2014) |
| September 30 | 90.0°F (1989) | 25.0°F (1933) | 0.58 in (1994) |