Gallia County Climate
Gallia County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.9°F
Annual Precip
44.5"
Annual Snowfall
—
Extreme Heat Days
32
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,803
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Gallia County
Climate Verdict
Gallia County has a mild, with an average annual temperature of 54.9°F, moderately wet with 44.5 inches of annual precipitation, occasional hot days — 32.4 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.1°F. summers are warm — July averages 75.9°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Gallia County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Gallia County is 3.4°F warmer than the Ohio statewide average of 51.5°F, it is somewhat wetter than average for Ohio, the county experiences 17.50666666666667 more extreme heat days than the state average.
Climate Profile
About Gallia County Weather
Gallia's Subtropical Reach Outpaces National Norms
Gallia County maintains an average annual temperature of 54.9°F, placing it above the national median. This humid subtropical climate experiences significantly warmer baseline conditions than most counties across the United States.
A Warm Outlier in the Buckeye State
While Ohio averages 51.5°F, Gallia is consistently warmer with its 54.9°F mean. This puts the county among the state's warmest southern locales, benefiting from Ohio River valley heat retention.
Hotter and Wetter than Northern Neighbors
Gallia receives 44.5 inches of precipitation annually, exceeding the state average of 41.2 inches. It outpaces central Ohio counties like Guernsey in both temperature and total rainfall.
Intense Summer Heat and Shifting Winters
Residents endure 32 extreme heat days over 90°F annually, significantly more than the regional average. While historical snowfall data is limited, winter temperatures typically average a brisk 34.8°F.
Prioritize Cooling and Water Management
High-efficiency HVAC systems are essential here to combat the month of 90-degree days. Homeowners should also focus on gutter maintenance to handle the county's heavy 44.5-inch annual rainfall.
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.