Historical weather data, all-time temperature records, and monthly climate averages for London, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in London, OH sits right in the shoulder season—expect a high around 58° and a low near 36°, with about a 1-in-3 chance of rain. The date has seen wild swings over 101 years of records, from a balmy 83° in 1988 down to a brutal 14° in 1995. Snow is nearly off the table at just 1% odds.
London's all-time extremes tell the story of a true Midwest climate with no apologies—109° in July 1936 and -24° in January 1994 represent a 133-degree spread between the worst of summer and winter. A single September day in 1979 dropped 4.76 inches of rain, and the Blizzard of '78 left 12 inches of snow on January 25.
Summer is the clear sweet spot, with highs peaking around 85° the week of July 9–15 and staying in the low 80s through August. If you're avoiding cold, steer clear of early January, when average highs barely crack 35°. May is the rainiest stretch of the year, averaging over an inch of precipitation in a single week.