Climate almanac
Flat Rock
Michigan, United States · 42.10°, -83.29°
What is the climate like in Flat Rock?
The best time to visit Flat Rock is typically June – September, with trip comfort peaking in September (7.2/10). Flat Rock is warmest in July, when daily highs average 81°F (27°C), and coolest in January, when lows fall to about 25°F (-4°C). The wettest month is typically April and the driest is September; the year sees roughly 41 in (1052 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in September (7.2/10)
- Warmest monthJuly — average high 81°F (27°C)
- Coolest monthJanuary — average low 25°F (-4°C)
- Wettest monthApril (4.0 in (103 mm))
- Driest monthSeptember (2.6 in (67 mm))
- Annual precipitation41 in (1052 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromDetroit Metro AP, 15 km away (1958-2026)