Know before it freezes. Protect your plants, pipes, and property.
Download on the App StoreiPhone · iPad · iOS 26+
FreezeAlert uses hyperlocal weather science to alert you when it's going to freeze at your home, not just in your area.
Add your home, vacation cabin, community garden, or rental property Each location is monitored independently with its own forecast and alert.
Notifications are scheduled directly from the forecast, up to 24 hours in advance. They send even if the app is closed!
Elevation correction, slope direction, and radiative surface cooling adjustments bring the forecast down from the grid to your exact terrain, where it's actually going to freeze.
An hourly strip shows hour-by-hour temperatures across the next two days. Freeze-risk hours are highlighted so you can see exactly how long the cold window lasts.
Set your alert temperature anywhere from −4°F to 50°F. Tender tropicals need a different threshold than hardy perennials or exposed water pipes.
When a freeze is approaching, contextual tips appear on the card (cover plants, drip faucets, insulate exposed pipes) tuned to the expected low temperature.
Enter any address or ZIP code. FreezeAlert reverse engineers it to fetch terrain elevation and detect slope direction automatically.
Choose the temperature that matters to you. The default is 32°F, but you can dial it in to match your plants or pipes.
Get notified 1, 3, 6, 12, or 24 hours before freezing conditions are expected, giving you enough time to act.
Alerts refresh automatically in the background. You'll get a notification before each freeze event, every location, without lifting a finger. Our back end keeps alerts going after you close the app.