Actuaries Climate Index data is available for download. Data is currently available through November 2021 (Fall 2021). Download monthly and seasonal data by region and component.
Meteorological seasons are defined as follows:
- Winter = December, January, February
- Spring = March, April, May
- Summer = June, July, August
- Fall = September, October, November
In April of 2019, to address some gaps in the underlying data, we modified the calculation methodology, as described in the Data Disclosure. The new methodology is used for all releases from April of 2019 onwards.