Temperature
Pleasant by day, mild at night.
77°Ftypical Aug high
Ashtabula is most comfortable in summer and early autumn. Summers are warm and winters are cold. Rain is frequent in most months. Humidity is usually low.

Pleasant by day, mild at night.
Recurring showers across the month.
Plenty of sun this month.
Warm days, with some hot afternoons and occasional humid spells.
Partly cloudy across the month.
Want a side-by-side climate view? Compare Ashtabula with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology