Constitution MapNine patterns · 14 US cities

Climate readings

Fourteen US cities against the Chinese solar calendar

The twenty-four fortnights of the Chinese calendar were named for one climate. These pages set each fortnight against thirty years of local weather-station record, city by city, and say plainly where the two part company.

CityFreeze-free daysMedian first freezeRain vs. heat
Atlanta246November 21-0.08 (even)
Boston215November 8-0.75 (inverted)
Chicago177October 19-0.18 (even)
Dallas261November 25-0.4 (inverted)
Denver151October 60.65 (aligned)
Houston296December 8-0.16 (even)
Los Angeles365none-0.94 (inverted)
Miami365none0.91 (aligned)
Minneapolis167October 100.56 (aligned)
New York230November 18-0.27 (even)
Phoenix365January 2-0.28 (even)
San Francisco365December 31-0.96 (inverted)
Seattle259November 21-0.99 (inverted)
Washington DC234November 17-0.03 (even)

NOAA NCEI 1991–2020 U.S. Climate Normals, one weather station per city. Rain vs. heat is the correlation between monthly rainy-day rate and monthly mean temperature; the calendar’s home climate scores r = 0.881.