RunnerCast

Weather built for
how you run.

RunnerCast scores today's conditions for your run — personalized to your preferences, and your tolerance for the elements.

Download on the App Store How it works ↓

Everything you need before you lace up

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Personalized Scoring

Set your preferred temperature range, wind tolerance, and runner profile. The score adjusts to match the kinds of weather you love (or loathe).

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Looks Ahead

The recommendation considers the next few hours of your running window — so if conditions are improving or getting worse, RunnerCast tells you.

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Races and Club Runs

Add your upcoming race or a recurring club run to count down the days and get a forecast for your event so you can be prepared.

How it works

A score built for
runners, not forecasters.

RunnerCast pulls live weather data for your location and runs it through a scoring model built around what actually makes a run feel good or miserable. Temperature, wind, precipitation, humidity, and cloud cover are each scored and blended into a single number that drives the Run Now / Maybe Wait recommendation.

Ideal
Decent
Marginal
Not Ideal
Terrible

The score is tuned to you — set your preferred temperature range, wind tolerance, and runner profile and it adjusts to match how you actually run. The recommendation also looks ahead so you're never caught out by worsening conditions.

RunnerCast also tracks your events, whether it's a race or a recurring club run, and surfaces a forecast for the moment you start. On supported devices, the AI Insight feature turns all of that into plain-language advice — no numbers, no jargon.

How the score works, and how to tune it →

What's New

RunnerCast 2.3.0 is now available!

See the factors that will affect your run.

Read release notes →

Ready to run smarter?

Download RunnerCast and get a forecast that actually speaks your language.

Download on the App Store