January in Ames averages a daily high of -1.4°C with nights around -11.2°C. Expect roughly 5.4 wet days totalling 16.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ames is September.
Based on AMES MUNICIPAL AIRPORT, IA US (4.9km), 1995–2024. 28 years of January data.