Montgomery County Climate
Montgomery County, Pennsylvania
Avg Annual Temp
53.3°F
Annual Precip
48.7"
Annual Snowfall
18.0"
Extreme Heat Days
24.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Montgomery County Weather
Warm Subtropical Influences
Montgomery County averages 53.3°F annually, making it notably warmer than the national median. The climate leans toward humid subtropical, influenced by its proximity to the Atlantic coastal plain.
One of Pennsylvania's Warmest Counties
At 53.3°F, the county is 3.4 degrees warmer than the Pennsylvania state average. It also sees more rain than the state norm, recording 48.7 inches of annual precipitation.
Milder Winters Than Northern Neighbors
Compared to counties further inland, Montgomery enjoys light winters with only 18.0 inches of snow. It is significantly warmer and less snowy than the mountainous regions to the north and west.
Persistent Summer Heat
The county endures 25 days of extreme heat above 90°F, driven by a July average of 75.7°F. Winters are relatively mild, with average January temperatures staying above freezing at 30.9°F.
Prioritizing Summer Cooling
Energy-efficient air conditioning is the top priority here given the 25 days of extreme heat. Heavy winter gear is less critical, as annual snowfall is less than half of what other PA counties experience.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.