Orleans County Climate
Orleans County, New York
Avg Annual Temp
49.3°F
Annual Precip
35.2"
Annual Snowfall
67.0"
Extreme Heat Days
8.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Orleans County Weather
Cool Breezes Along Lake Ontario
Orleans County averages 49.3°F annually, keeping it cooler than the national median. The lake influence regulates temperatures, preventing the extreme spikes seen in the midwest.
Ranks Above the State Average
The county’s 49.3°F average is nearly two degrees warmer than the statewide average of 47.4°F. It is one of the more temperate counties along the Great Lakes shoreline.
The Drier Side of the Region
Orleans is the driest county in this group, receiving only 35.2 inches of annual precipitation. This is nearly 10 inches less than Oswego or Onondaga.
Lakeside Summers and Steady Snow
July averages a warm 72.2°F with 9 days exceeding 90°F. Winter brings 67.0 inches of snow, which is significant but lighter than the lake-effect totals found further east.
Plan for Steady Winter Snowfall
Homeowners should maintain reliable snow blowers for the 67 inches of annual accumulation. The 27.8°F winter average necessitates well-sealed windows to block lake winds.
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.