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

Reliable weather data is available through several major repositories:

Speed and direction to estimate natural ventilation and infiltration.

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

Relative humidity and barometric pressure. 3. Future Weather Files & Climate Change

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

Many countries provide localized data, such as the Building Performance site for Aotearoa New Zealand. An In-Depth Look at Weather Files - ClimateData.ca

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