Cortland County Climate
Cortland County, New York
Avg Annual Temp
44.7°F
Annual Precip
45.1"
Annual Snowfall
117.3"
Extreme Heat Days
1.35
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Cortland County Weather
Cold and exceptionally wet
Cortland County is significantly cooler than the national median, averaging just 44.7°F. High moisture levels result in 45.1 inches of precipitation, exceeding the state average.
A chillier New York outlier
With an average temperature nearly 3 degrees below the state mean of 47.4°F, Cortland is one of the region's coldest spots. It is notably wetter and snowier than the typical New York county.
Burying neighbors in snow
The county receives 117.3 inches of snow, far surpassing neighbor Chenango County's 66.5 inches. Extreme heat is almost non-existent here, with only 1 day reaching 90°F annually.
A dominant winter season
Winter dominates the cycle with 117.3 inches of snow and a January average of 20.9°F. Summer is mild and brief, with a seasonal average of only 65.2°F.
Reinforcing for the snow load
Structural reinforcement and roof rakes are vital for managing 117 inches of snow. Air conditioning is rarely a priority given the county experiences only one day of extreme heat.
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.