St. Johns, Sunday, 9 August, 07:13
Clear. Feels like 58°. High 86°, low 58°.
In September, St. Johns, MI averages a high of 71.5° and a low of 55.1°. About 2.9 inches of precipitation fall over the month (9 wet days). The record high is 91.6° (2017) and the record low 29.5° (1993). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 76.3° | 59.2° | 32% | 87.8° (1973) | 43.7° (1967) |
| 2 | 76.8° | 59.7° | 30% | 90.3° (2011) | 46.2° (1976) |
| 3 | 76.8° | 59.4° | 25% | 89.4° (1973) | 43.9° (1974) |
| 4 | 75.7° | 58.5° | 23% | 88.5° (2023) | 43.5° (1997) |
| 5 | 75.7° | 58.6° | 25% | 90.5° (2023) | 45° (1974) |
| 6 | 75.7° | 58.6° | 28% | 87.3° (2016) | 43° (1984) |
| 7 | 75.4° | 58.8° | 35% | 89.2° (1960) | 44.1° (1986) |
| 8 | 73.9° | 57.9° | 30% | 90.1° (1960) | 41.5° (2025) |
| 9 | 73.6° | 57.6° | 32% | 87.8° (2002) | 43.3° (1975) |
| 10 | 73.6° | 56.7° | 28% | 91° (2013) | 43.3° (1969) |
| 11 | 73.6° | 56.7° | 32% | 86.9° (2013) | 42.8° (1993) |
| 12 | 73.8° | 56.7° | 28% | 87.6° (2005) | 43.5° (1964) |
| 13 | 73° | 57.4° | 33% | 90° (2005) | 41.9° (1964) |
| 14 | 71.8° | 55.8° | 35% | 84.2° (2024) | 35.4° (1975) |
| 15 | 70.7° | 54.1° | 23% | 85.8° (1994) | 43.5° (2011) |
| 16 | 70.9° | 54.1° | 25% | 84.9° (2017) | 38.8° (2007) |
| 17 | 71.2° | 54.9° | 27% | 84.9° (2018) | 39.7° (2013) |
| 18 | 72° | 54.7° | 23% | 85.8° (2025) | 38.7° (1990) |
| 19 | 71.8° | 54.7° | 28% | 84.6° (1965) | 37.8° (2020) |
| 20 | 71.4° | 55.4° | 40% | 85.1° (1978) | 39.4° (1991) |
| 21 | 69.6° | 54.7° | 42% | 89.2° (2017) | 41.7° (1973) |
| 22 | 68° | 53.1° | 37% | 91.2° (2017) | 39.2° (1999) |
| 23 | 66.9° | 51.4° | 27% | 91.6° (2017) | 34.5° (1995) |
| 24 | 67.3° | 50.2° | 22% | 91° (2017) | 35.6° (1976) |
| 25 | 67.6° | 51.6° | 33% | 86° (2017) | 37.4° (1991) |
| 26 | 68.2° | 52.2° | 37% | 89.1° (2017) | 38.5° (1966) |
| 27 | 67.8° | 51.8° | 30% | 81.3° (1999) | 36.1° (1989) |
| 28 | 65.5° | 50.7° | 27% | 81.9° (1971) | 32° (1991) |
| 29 | 65.5° | 49.5° | 37% | 81.9° (1986) | 34.7° (1984) |
| 30 | 65.3° | 49.3° | 35% | 82.9° (2019) | 29.5° (1993) |