Weather built for
how you run.

RunnerCast pulls live weather data for your location and runs it through a scoring model built specifically around what makes a run feel good or miserable — not just whether it's raining.

Every condition gets a score from 0 to 100. Temperature is measured against your personal preferred range, not some generic comfort standard. Wind is evaluated against your own tolerance. Precipitation chance is weighted heavily because nobody wants to get soaked. Cloud cover gets credit too — partial cloud is actually ideal for running, cutting glare without trapping heat. Each factor is weighted and blended into a single score that tells you at a glance how the conditions stack up.

That score maps to a condition — and drives the Run Now / Maybe Wait recommendation.

The recommendation also looks ahead at the next few hours of your running window, so if conditions are about to improve, RunnerCast will factor that in. Active weather warnings are taken seriously too: a severe or extreme alert will always push the advice toward waiting.

You can tune the model to you. Set your preferred temperature range, your wind comfort threshold, and your runner profile — Fair Weather, Balanced, or Hardcore — and the scoring adjusts to match how you actually run.

RunnerCast also tracks your events whether it's a race or a recurring run like your weekly club run. You'll get a forecast for the start time of your event so you can make sure you are ready for whatever the conditions might be. One less thing to worry about!

On supported devices, the AI Insight feature goes a step further, translating all of that data into plain language that describes what the run will actually feel like — no numbers, no jargon, just honest advice from a coach who's looked at the forecast.