Tools like the WeatherShift™ tool use climate model projections to adjust historical files for future decades (e.g., 2050 or 2080).
A standard weather file stores hourly information for a full year, including: Dry-bulb and dew-point temperatures. The Weather Files
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