Armstrong County Climate
Armstrong County, Pennsylvania
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.0°F
Annual Precip
44.9"
Annual Snowfall
38.4"
Extreme Heat Days
17
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
2,856
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Armstrong County
Climate Verdict
Armstrong County has a mild, with an average annual temperature of 50.0°F, moderately wet with 44.9 inches of annual precipitation, rare extreme heat with only 16.599999999999998 days above 90°F annually, moderate snowfall of 38.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 26.7°F. summers are warm — July averages 71.5°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Armstrong County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Armstrong County closely matches the Pennsylvania statewide average temperature of 49.8°F.
Climate Profile
About Armstrong County Weather
A classic continental climate profile
Armstrong County’s annual average temperature of 50.0°F is roughly four degrees cooler than the national median. It experiences a moist climate with 44.9 inches of annual precipitation, very close to the state average. These conditions foster a landscape defined by lush forests and significant winter snow accumulation.
The definition of Pennsylvania average
Armstrong County is a near-perfect match for the state’s climate profile, with its 50.0°F average temperature almost identical to the state's 49.9°F. Its 44.9 inches of precipitation also mirrors the Pennsylvania average of 45.3 inches. Residents here experience the quintessential Pennsylvania weather cycle without the extremes of the mountains or the coast.
Cooler and wetter than Pittsburgh
Compared to neighboring Allegheny County, Armstrong is nearly two degrees cooler and notably snowier. It receives 38.4 inches of snow annually, which is over 6 inches more than its neighbors to the southwest. This makes the county a prime spot for winter activities but necessitates better cold-weather preparation.
Sharp winters and peak summer heat
Winters are cold with a January average of 26.7°F and a significant 38.4-inch snowfall total. Despite the cold winters, the county still sees 17 days of extreme heat above 90°F during the summer months. This wide variance results in a winter average of 29.3°F and a summer peak of 69.9°F.
Gear up for heavy winter snow
With nearly 40 inches of annual snow, high-quality snow blowers and winter tires are essential for local residents. The 17 days of 90°F heat mean that while winters are the main concern, cooling systems are still necessary for summer comfort. Homeowners should focus on heavy-duty insulation to handle the January lows of 26.7°F.
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.