Historical weather data, all-time temperature records, and monthly climate averages for Hamilton, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Hamilton runs mild with an average high of 61° and a low of 37°, though history shows it can swing hard in either direction — from a balmy 82° in 2010 to a bitter 24° in 2004. Rain is a real possibility today, with a 43% historical chance of precipitation.
Hamilton's weather has some teeth to it. The city hit a scorching 105° on July 7, 2012, and bottomed out at a brutal -20° on February 24, 2015 — a 125-degree spread that tells you this is a place with real seasons. The wettest single day on record dumped nearly 4 inches of rain on July 17, 2001.
Summer is the star here, with mid-July average highs peaking at 87° and the warmest sustained stretch running from mid-July through late summer. If you're trying to dodge both cold and crowds, avoid January through February, when highs struggle to reach 40°. Pack an umbrella for June — it's the wettest stretch of the year, averaging over an inch of rain in a single week.