January in Pittsburgh averages a daily high of 3.7°C with nights around -5.4°C. Expect roughly 15 wet days totalling 84.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Pittsburgh is May–June.
Based on EMSWORTH L D OHIO RIVER, PA US (10.6km), 1995–2024. 21 years of January data.