Ashtabula County Climate
Ashtabula County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
48.3°F
Annual Precip
42.0"
Annual Snowfall
89.9"
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
2,552
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Ashtabula County
Climate Verdict
Ashtabula County has a cool, averaging 48.3°F annually, moderately wet with 42.0 inches of annual precipitation, rare extreme heat with only 6.2 days above 90°F annually, heavy winter snowfall averaging 89.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.3°F. summers are warm — July averages 70.0°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Ashtabula County is 3.2°F cooler than the Ohio statewide average of 51.5°F.
Climate Profile
About Ashtabula County Weather
Extreme Snowfall in the Snowbelt
Ashtabula County averages a chilly 48.3°F annually, well below the national median. It is defined globally by its massive lake-effect precipitation patterns.
Ohio's Frozen North Coast
The county is significantly colder than the state average of 51.5°F. Its 89.9 inches of annual snow is the highest in the state, dwarfing the averages of central and southern counties.
The Region's Snow Leader
Ashtabula's 89.9 inches of snow is more than five times what residents in Athens County see. Its July average of 70.0°F is also much cooler than its inland neighbors.
Mild Summers and Intense Winters
Summer offers relief with only 6 days above 90°F and an average temp of 68.1°F. However, winter dominates the calendar with heavy snow and a 27.7°F average.
Invest in Heavy Snow Gear
A high-stage snowblower and winter tires are essential for the nearly 90 inches of annual snowfall. Residents benefit from lower summer cooling costs due to the lake-cooled air.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.