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Mountain Rain or Snow
Let us know what the weather is doing
Submit reports offline
Find all your reports in one place
Create an account
Edit profile easily within the app

About Mountain Rain or Snow

This is the official app of Mountain Rain or Snow, a research project that engages community members to submit observations of precipitation to help scientists better predict winter weather. You can use this app directly through the browser or click the link above to install the app on your device‘s home screen. To learn more about Mountain Rain or Snow, visit:

What's this app?

This app is a Progressive Web App (or simply PWA). Install it on any smartphone, tablet or desktop computer — it uses very little storage space and requires no updates. By design, a PWA cannot access your device data or personal information.


Install Mountain Rain or Snow in a few seconds — directly from your browser. This app is available on Android (with Chrome), on iOS (with Safari), on Windows (with Chrome or Edge) and macOS (with Chrome). Simply click on the Install button at the top of the page.