Weather history, archived forecasts and statistics for analysis, modelling and planning. Explore historical datasets from the OpenWeather Platform to analyse past weather events, assess their impact on your operations and develop models informed by historical conditions. Choose the locations, time periods and weather parameters you need, with access through different APIs and bulk downloads according to the dataset.
Available datasets
Hourly weather history
Weather records at one-hour intervals, including temperature, feels-like temperature, precipitation, wind, humidity, atmospheric pressure, cloud cover and visibility, depending on the access method.
The full hourly bulk archive begins on 1 January 1979. One Call also provides hourly historical timelines covering more than 47 years. Historical access through the Weather History API depends on the subscription or agreed Enterprise scope.
Access and documentation: Weather History API · One Call · History Bulk
Daily weather history
Daily weather records for selected locations, covering more than 47 years through One Call. Available information includes temperature ranges, temperatures at different times of day, wind, humidity, atmospheric pressure and weather conditions.
Use daily history to compare periods, analyse seasonal patterns and examine the relationship between weather and business activity.
Access and documentation: One Call
Archived forecasts
Forecasts issued in the past, available from 7 October 2017. The archive preserves 16-day forecasts generated four times daily, allowing you to examine what was predicted at a particular time, evaluate forecast performance and test decision models using the information available then.
Forecasts issued from 15 June 2019 contain hourly values across all sixteen days. Earlier forecasts use hourly intervals for days 1–10 and twelve-hour intervals for days 11–16.
Access and documentation: History Forecast Bulk
Weather statistics
Statistical summaries calculated from historical weather, describing typical conditions and their variability. Available measures include averages, minima and maxima, medians, quartiles and standard deviations for temperature, pressure, humidity, wind, precipitation and cloud cover.
Statistics are organised by calendar day and can be requested for a selected day, month or the full calendar year. Use them to establish historical reference points and assess seasonal patterns.
Access and documentation: Statistical Weather Data API
Accumulated temperature
Accumulated temperature indicators for selected locations and historical periods, with an optional temperature threshold. These values support analysis of cumulative temperature conditions between chosen dates.
Access and documentation: Accumulated Parameters API
Accumulated precipitation
Total precipitation, expressed in millimetres, over a selected historical period. Compare precipitation accumulation across locations and date ranges to understand cumulative weather conditions relevant to your analysis.
Access and documentation: Accumulated Parameters API
Delivery for your systems
Access historical records and derived data through APIs, with JSON responses for your selected locations and supported periods.
Historical weather and archived forecasts are also available as CSV or JSON bulk files. Files can be prepared for selected locations and date ranges, with configurable parameters and measurement units. Available fields and historical coverage depend on the dataset and access method.
Choose datasets for your Enterprise package
Select the historical datasets, locations and time periods relevant to your organisation. Your Enterprise agreement defines the included data, usage allowances, access and delivery arrangements.
The Base Licence includes one year of hourly weather history and accumulated temperature and precipitation data, together with statistical weather data. Extended historical access, archived forecasts and tailored delivery can be added through customisation, with the scope agreed in your proposal.