September weather in Heyburn, ID
The average temperature in Heyburn in September is 60.8°F (45.0°F–76.6°F). Average precipitation: 0.66 inches.
September is a fall month in Heyburn, and is warmer than the annual average of 49°F. Daily temperatures swing about 31.6°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
76.6°F
Avg Low
45.0°F
Precipitation
0.66 in
Daylight
12h 16m
September records in Heyburn
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (1987) | 32.0°F (2006) | 0.55 in (1973) |
| September 2 | 97.0°F (1950) | 32.0°F (2008) | 0.37 in (1997) |
| September 3 | 99.0°F (2022) | 35.1°F (1961) | 0.23 in (1997) |
| September 4 | 97.0°F (1998) | 33.1°F (1965) | 0.89 in (2016) |
| September 5 | 98.1°F (2020) | 35.1°F (1956) | 0.25 in (1978) |
| September 6 | 100.9°F (2022) | 34.0°F (1954) | 0.34 in (1978) |
| September 7 | 98.1°F (2022) | 33.1°F (1948) | 0.49 in (2013) |
| September 8 | 97.0°F (2021) | 30.9°F (1948) | 0.45 in (1985) |
| September 9 | 95.0°F (1997) | 30.0°F (1976) | 0.31 in (1961) |
| September 10 | 96.1°F (1959) | 33.1°F (1964) | 0.67 in (1998) |
| September 11 | 96.1°F (1990) | 33.1°F (1964) | 0.72 in (1997) |
| September 12 | 95.0°F (1953) | 30.0°F (1951) | 0.51 in (1998) |
| September 13 | 97.0°F (1948) | 30.0°F (1967) | 0.19 in (1963) |
| September 14 | 97.0°F (1990) | 28.0°F (1952) | 0.63 in (2017) |
| September 15 | 95.0°F (1995) | 32.0°F (1952) | 0.26 in (2022) |
| September 16 | 91.9°F (1951) | 27.0°F (1965) | 0.21 in (1953) |
| September 17 | 93.0°F (1981) | 23.0°F (1965) | 0.79 in (1961) |
| September 18 | 95.0°F (1962) | 18.0°F (1965) | 0.65 in (1948) |
| September 19 | 90.0°F (1956) | 18.0°F (1965) | 0.29 in (1970) |
| September 20 | 89.1°F (1991) | 27.0°F (1983) | 0.69 in (1963) |
| September 21 | 90.0°F (1967) | 25.0°F (1983) | 0.59 in (1998) |
| September 22 | 93.0°F (1992) | 28.0°F (1956) | 1.08 in (2016) |
| September 23 | 91.0°F (1987) | 28.0°F (1956) | 0.67 in (2016) |
| September 24 | 93.0°F (2001) | 24.1°F (2000) | 0.28 in (1948) |
| September 25 | 93.0°F (2015) | 23.0°F (1970) | 0.44 in (1948) |
| September 26 | 91.0°F (1952) | 27.0°F (1970) | 0.69 in (1982) |
| September 27 | 89.1°F (1969) | 26.1°F (1964) | 0.33 in (1983) |
| September 28 | 93.9°F (1994) | 28.9°F (1950) | 0.19 in (2019) |
| September 29 | 89.1°F (1989) | 23.0°F (1984) | 0.30 in (1977) |
| September 30 | 91.9°F (1992) | 23.0°F (1950) | 0.73 in (1994) |