Historical weather data, all-time temperature records, and monthly climate averages for Ashtabula, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Ashtabula is a coin flip kind of day — there's a 62% chance of precipitation and nearly a 1-in-3 shot of snow. Temperatures average 51° for a high and 30° overnight, though the date has seen everything from 69° (1997) to a brutal 16° low back in 2016.
Ashtabula's weather has serious range: the thermometer has swung from a scorching 98° in July 2011 all the way down to -31° in February 2015, a 129-degree spread. A single August day in 2000 dropped 4.18 inches of rain, and a January storm in 2004 buried the area under 17 inches of snow — a reminder that Lake Erie doesn't mess around.
Summer peaks mid-July with average highs around 81°, while January and February settle into the low 30s — cold, grey, and lake-effect prone. If you're chasing the best weather, aim for June through September when highs stay in the 70s and 80s. Late September is actually the wettest stretch of the year, averaging nearly 1.4 inches in a single week.