January in Irondequoit averages a daily high of 0.7°C with nights around -7.1°C. Expect roughly 19.7 wet days totalling 68.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Irondequoit is May–September.
Based on FREDERICK DOUGLASS GREATER ROCHESTER INTERNATIONAL AIRPORT, NY US (13.2km), 1995–2024. 30 years of January data.