The Weather Files -

Tools like the WeatherShift™ tool use climate model projections to adjust historical files for future decades (e.g., 2050 or 2080).

A widely cited repository for updated TMYx files and climate change data.

These are the most common files, created by statistically selecting the 12 most "typical" months from a multi-year period (often 10–30 years). The Weather Files

There are two primary categories of weather files used to analyze building energy demand and resilience:

Many countries provide localized data, such as the Building Performance site for Aotearoa New Zealand. An In-Depth Look at Weather Files - ClimateData.ca Tools like the WeatherShift™ tool use climate model

As the climate shifts, historical data (TMY) may become less representative of a building's future lifespan. Engineers now use to "future-proof" designs.

These contain data from a specific, real-world year. They are essential for calibrating building models against actual utility bills or performance data. 2. Core Data Components There are two primary categories of weather files

These files help predict how cooling demands might increase and heating demands decrease as global temperatures rise. 4. Sourcing & Global Repositories