January in Troy averages a daily high of 0.2°C with nights around -6.9°C. Expect roughly 13.1 wet days totalling 57.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Troy is May–September.
Based on PONTIAC WWTP, MI US (9.4km), 1995–2024. 13 years of January data.