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IBM forecast data & AI used by WeatherWatch / RuralWeather deemed “world’s most accurate” once again

Forecast data was over 3 times more likely to be the most accurate forecaster than other weather providers studied.

AI and advanced technology combined with human expertise helps enable more informed weather decisions.

IBM (and its subsidiary The Weather Company) were determined to be “the overall most accurate provider globally” by ForecastWatch, a premier organisation for evaluating the accuracy of weather forecasts. In fact, The Weather Company has been the world’s most accurate forecaster overall every year since the study began in 2017.

Accuracy has become increasingly paramount as people and businesses continue to monitor weather forecasts to help them make decisions, especially amid the growing volatility of weather and a changing climate. In fact, a recent study validated that 91% of respondents cited accuracy among the top five leading criteria for why they select a weather provider.

In its latest comprehensive report of forecast accuracy released in May, Global and Regional Weather Forecast Accuracy Overview, 2017-2022, commissioned by IBM, ForecastWatch named IBM’s The Weather Company as the weather forecast provider whose forecasts were more likely to be the most accurate across all geographic regions studied and time periods covered. Further, the report data showed that the accuracy gap between The Weather Company (noted as The Weather Channel in the report) and the next best overall provider has grown larger since the study began, from 2 times in 2017 to over 3 times more likely in 2022 to be the most accurate forecaster, even with the addition of more weather providers studied.

“We’re seeing more companies jump into the business of weather forecasting as weather becomes more erratic and impactful. Despite increased competition, this report validates our continued innovation and leadership in weather accuracy,” said Sheri Bachstein, CEO of The Weather Company, an IBM Business. “Our unique mix of ‘human and machine’ – advanced AI and technology plus human expertise – has helped us vastly outpace the field as we help people and customers make informed decisions based on insights from a recognized, trusted source.”

About the Report
The report is a comprehensive weather forecast accuracy study spanning six years, 2,182 global locations across eight regions of the world, and 84 different accuracy metrics covering precipitation, temperature, cloud cover, wind and other forecast variables. ForecastWatch analysed about 250 million forecasts from 23 different weather providers. Each provider was noted each time it finished in first place for each metric, and according to the report, The Weather Channel recorded the most first-place finishes globally for every year studied and all forecast days of all the providers compared.

Major highlights and findings of the report include:

  • IBM/The Weather Company is the world’s most accurate weather forecaster overall of the providers studied.2
  • IBM/The Weather Company was over 3 times more likely to be the most accurate forecaster than any other provider studied.
  • The accuracy gap between IBM/The Weather Company and the next best overall provider has grown larger since the study began, from 2 times more likely in 2017 to over 3 times more likely in 2022 to be the most accurate forecaster than any other weather provider studied.
  • IBM/The Weather Company was the most accurate forecast provider most often in each region compared, including the U.S., Canada, Central America, South America, Europe, Africa, Middle East and Asia-Pacific.
  • The report states: “The Weather Channel had more first place finishes in the wind metric alone than any provider had globally for all metrics combined.”

Industry-Leading Accuracy Built on Science, AI, and Tech
The report is evidence of how IBM is helping advance the science of weather forecasting through continued innovations, including in AI and cloud computing. Artificial intelligence is a critical tool for meteorologists to make sense of billions of unstructured weather data points produced by satellites, ground sensors, radars, and more. With advanced machine learning algorithms and computing power from IBM, meteorologists at The Weather Company can use this data to simulate atmospheric conditions and better forecast the weather.

Continued investment and innovation at IBM have allowed its team of meteorologists and experts to develop technologies that have helped keep The Weather Company ahead in overall accuracy, such as:

  • A forecasting engine that uses AI to integrate input from nearly 100 forecast models around the world, weighing factors from each model based on geography, time, weather type and recent forecast accuracy, on demand.
  • A significant breakthrough in global weather forecasting with its proprietary IBM GRAF (Global High-Resolution Atmospheric Forecasting) system, the first hourly-updating global weather model able to predict something as small as a thunderstorm.
  • A unique collaboration of human and machine – proprietary technology called “human over the loop” forecasting that brings AI together with an expert team of nearly 100 meteorologists. The process helps customers get an on-demand forecast based on fresh information and human expertise.
  • Global radar leadership thanks to one of the world’s largest assimilations of weather radar data and technologies such as AI to use that data effectively.
  • On-demand assessment of both current and forecast weather conditions from proprietary technology at The Weather Company.

Forecast Accuracy Helps Inform Businesses, People and Marketers
The accuracy of forecasts within IBM’s weather products is critical not only for keeping consumers informed, but also for delivering AI-based insights and decision capabilities across industries. Leveraging weather signals and insights helps businesses, marketers and customers prepare for and respond to weather. 

The Weather Company forecasts are distributed via the IBM Cloud across The Weather Channel app and, Weather Underground app and, as well as weather products for IBM enterprise clients.

IBM’s The Weather Company is the world’s leading weather provider and powers the weather forecasts on over 2 billion devices.

For more information about The Weather Company, an IBM Business, visit

For more on IBM, visit For more details in NZ and Australia contact us via and

The Weather Company, an IBM Business  
The Weather Company, an IBM Business, is the world’s leading weather provider,5 helping people and businesses make more informed decisions and take action in the face of weather. The powerful combination of IBM’s advanced AI and cloud capabilities with The Weather Company’s high-volume weather data, insights, advertising and media solutions across the open web help people, businesses and brands around the world prepare for and harness the power of weather in a scalable, privacy-forward way. The world’s most accurate forecaster globally, the company reaches hundreds of enterprise clients and more than 400 million monthly active users via its digital properties from The Weather Channel ( and Weather Underground ( For more, visit 

  • STORY SOURCE IBM – NEW YORK and ATLANTA (Reported published May 15, 2023)
  • In New Zealand and showcase IBM/The Weather Company forecast data and exclusive maps.
  • is proud to be a small Kiwi business and an official IBM Business Partner.


Yeah right on 11/07/2023 11:06pm

More like the most inaccurate just right now it says no rain in Auckland and its pouring down with rain what a joke

WW Forecast Team on 12/07/2023 12:07am

Three things.

1) Being most accurate doesn’t mean we’re perfect. Your complaint is like being angry that the All Blacks won the World Cup, but you wanted them to win by more points.
2) The report says even if we do sometimes get it wrong, our competition gets it’s wrong more often… so we’re a free service that is more accurate -while you PAY/tax fund our two NZ competitors – yet you regularly complain to us, the free more accurate one. Odd behaviour.
3) You write a petulant comment on our website almost EVERY single day – so you clearly find us hugely reliable and an important part of your life to invest so much energy into us. Your regular daily traffic to our site helps us make advertising money – so THANK YOU for being a loyal grouch who doesn’t understand variables and risks but keeps demanding precise perfection when the science isn’t there yet.

Philip Duncan.

p.s. We’ve been forecasting showers, some heavy, for Auckland today for over a week now.

David King on 12/07/2023 3:17am

Don’t worry about the complainers. I find your forecasts to be far more accurate than Metservice. I’m in Te Aroha and Metservice are normally 100% wrong, and you guys are far better, even thought weather here is often all over the place. And I guess I should visit your website more often as I generally see you on Facebook, as ad revenues is very important to many companies.

WW Forecast Team on 12/07/2023 3:39am

Cheers David, we’re active on Twitter, Facebook and YouTube at the moment, and obviously here too. Our site is also good for Te Aroha – we’re bringing some of the graphs there on to WW over the next year. My original weather company actually started in Te Aroha in 1994 because it’s a tricky climate (and a microclimate that no other forecasters covered back then)!

Miss experiencing the gales there – as terrifying/damaging as they can be!
– Phil

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