● Climate Normals & Weather History
Compare city climate data with 70+ years of records
Stop guessing weather averages. Eranorms puts temperatures, precipitation, and seasonal extremes into direct historical perspective.
Interactive City Matchup
Flagship Climate Matchups
Head-to-Head
Seattle vs. Boston
39.3" vs. 43.6" annual rain
Head-to-Head
Austin vs. Phoenix
36.2" vs. 7.2" annual rain
Head-to-Head
Chicago vs. Denver
40.9" vs. 14.5" annual rain
Head-to-Head
New York vs. Miami
49.5" vs. 67.4" annual rain
Head-to-Head
Seattle vs. San Francisco
39.3" vs. 22.9" annual rain
Explore City Climate Profiles
WA • Pacific Northwest
Seattle
Marine West Coast (Csb)
MA • Northeast
Boston
Humid Continental (Dfa)
TX • South Central
Austin
Humid Subtropical (Cfa)
AZ • Desert Southwest
Phoenix
Hot Desert (BWh)
IL • Midwest
Chicago
Humid Continental (Dfa)
CO • Rocky Mountains
Denver
Semi-Arid Continental (BSk)
NY • Mid-Atlantic
New York
Humid Subtropical (Cfa)
FL • Southeast
Miami
Tropical Monsoon (Am)
CA • West Coast
San Francisco
Warm-Summer Mediterranean (Csb)
See your weather in historical context
Explore 70+ years of climate history and weather baselines in your pocket. Visualize trends with stripes, heatmaps, box plots, and station normals.