January in Middletown averages a daily high of 5.6°C with nights around -4.7°C. Expect roughly 10.4 wet days totalling 92.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Middletown is May–June.
Based on FREEHOLD MARLBORO, NJ US (14.5km), 1995–2024. 27 years of January data.