The Weather Files Apr 2026

Reliable weather data is available through several major repositories:

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 Reliable weather data is available through several major

These are the most common files, created by statistically selecting the 12 most "typical" months from a multi-year period (often 10–30 years). 2050 or 2080).

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