The Mercury Cup
A daily temperature-forecasting contest

About

Welcome to The Mercury Cup

This site is built to spark friendly competition and to help people learn about meteorology and weather forecasting. What sets it apart is the emphasis on growing as a forecaster — whether you're a seasoned professional or just dipping your toes into the world of weather.

What we do

Each day, members submit their predictions for the high and low temperatures in a selected city. It doesn't require constant attention — you submit once a day, and that's it. We know a good hobby has to fit around everyday life, and the site is designed for exactly that balance.

Friendly competition

Competitions here are supportive by design. Whether you're up against system-assigned opponents, running your own division, or going head-to-head with friends, the community is meant to be as enjoyable as it is competitive — built on fair play and mutual respect.

Learning and development

Beyond the competition, the site is a place to understand weather better — how patterns form, how temperatures move, and what factors shape conditions. You'll also learn the scoring system and how to refine your forecasting over time, as casually or as deeply as you like.

Join us

This is more than a competition — it's a community. Whatever your background or experience, there's a place for you here. Come make a forecast, and be part of the fun.