Lehigh County Climate
Lehigh County, Pennsylvania
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
53.1°F
Annual Precip
48.3"
Annual Snowfall
33.1"
Extreme Heat Days
18
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,405
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Lehigh County
Climate Verdict
Lehigh County has a mild, with an average annual temperature of 53.1°F, moderately wet with 48.3 inches of annual precipitation, rare extreme heat with only 18.2 days above 90°F annually, moderate snowfall of 33.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 30.1°F. summers are warm — July averages 75.6°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Lehigh County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Lehigh County is 3.3°F warmer than the Pennsylvania statewide average of 49.8°F, it is somewhat wetter than average for Pennsylvania.
Climate Profile
About Lehigh County Weather
A Balance of Sun and Rain
Lehigh County's 53.1°F average temperature sits right at the U.S. median for temperate climates. It features a humid continental environment with significant moisture and well-defined seasonal shifts.
One of Pennsylvania's Warmer Counties
The county is significantly warmer than the state average of 49.9°F. This makes Lehigh one of the milder urban corridors in the state, despite its susceptibility to heavy winter storms.
High Precipitation in the Valley
Lehigh receives 48.3 inches of rain annually, which is three inches more than the state average. This makes it wetter than nearby Lancaster and Luzerne counties.
Brisk Winters and Humid Summers
Winter brings 33.1 inches of snow and a 32.5°F average temperature. In summer, the county experiences 18 extreme heat days with July averages hitting 75.6°F.
Ready the Shovels and AC
Homeowners need heavy-duty snow removal equipment for the 33.1 inches of annual snowfall. Cooling costs also peak in July as temperatures frequently exceed 90°F for nearly three weeks.
Frequently Asked Questions
What is the average temperature in Lehigh County?
How much rain does Lehigh County get?
Does it snow in Lehigh County?
How hot does Lehigh County get in summer?
How cold are winters in Lehigh County?
Track your own weather in Lehigh County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.