Fairfax city Climate
Fairfax city, Virginia
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.9°F
Annual Precip
43.4"
Annual Snowfall
19.8"
Extreme Heat Days
23
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Fairfax city
Climate Verdict
Fairfax city has a mild, with an average annual temperature of 54.9°F, moderately wet with 43.4 inches of annual precipitation, occasional hot days — 23.05 per year above 90°F, light snow averaging 19.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 33.4°F. summers are warm — July averages 76.2°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Fairfax city. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Fairfax city closely matches the Virginia statewide average temperature of 56.2°F, it is somewhat drier than average for Virginia.
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.