GrayCloud Weather
Live Rainfall & NWS Forecasts
Free · In‑App Purchases
GrayCloud runs its own forecast engine on National Weather Service and NOAA data to give you minute-by-minute rain prediction for your exact address. Forecasts, radar, and severe alerts work worldwide, with the deepest data across the US, Canada, and EU.
Features:
- Minute-by-minute rain prediction: when it starts, how hard it falls, and when it stops
- Current conditions, hour by hour, and a 10-day forecast
- A home page you arrange yourself: reorder or hide any card, pick your buttons and theme
- Save as many locations as you want and swipe between them
- Live severe weather alerts from the NWS in the US and official agencies worldwide, matched to the storm polygon, not your whole county
- Twelve data cards to tap into: Rain, Soil and drought, Wind, NWS, Clouds, Air quality, UV index, Dew point, Astronomy, Climate, Records, and Tides
- Official NWS products: Area Forecast Discussion, the point forecast, and the SPC storm outlook, plus your day one severe risk
- Rainfall totals for 24 hours, 7 days, 30 days, month to date, and year to date, checked against official rain gauges
- Rain calendar: every rain day on a monthly heat map, tap a day for hour by hour, with history back to 2020 and snow totals alongside rain
- Weekly rain targets, and drought status from the U.S. Drought Monitor, soil moisture, and state and national drought maps
- Time Machine: scrub back to any past day and see what actually happened
- Climate normals, on this day and all-time station records, and your own personal records
- Sun arc, twilight, day length, moon phase on a 3D moon, meteor showers, and eclipse timing
- Real time radar with lightning and many map overlays:
- GPU-rendered high-resolution radar, smooth at any zoom
- Observed MRMS radar and a live nowcast on one timeline, scrubbable two hours back and into the near future
- Lightning strikes and live NWS warning polygons, tap one to read the alert
- Next 24-hour precipitation totals, plus temperature and cloud cover out to 10 days
- Weather station pins with live observations, on map, satellite, or hybrid layers
- 3D city dive: hold a zoom and drop into a bird's eye view
- Zoom out to the whole planet, with European radar from EUMETNET OPERA and satellite rain from NASA IMERG
- Tap anywhere for a forecast at that point, or share an animated radar loop
- Notifications you control, per location:
- Rain starting at light, default, or heavy sensitivity, plus rain ending and intensifying
- Severe weather, with a floor of all, moderate, severe, or extreme
- Morning briefing and tomorrow's forecast, at times you pick
- Freeze, heat wave, wind gusts, UV index, daily rain, and daily snow, at thresholds you set
- Sky and seasons: full moon, new moon, the first day of each season, meteor showers, and eclipses
- NWS report updates when the discussion, forecast, or outlook changes
- Watering reminders after a set number of dry days, drought changes, and a weekly dryness digest
- Quiet hours, with an option to let severe weather through
- Nine Home Screen and Lock Screen widgets, plus Live Activities counting down to rain
- Apple Watch app with current, hourly, daily, precipitation, and alerts, plus three complications
- Mac menu bar app with the full forecast, radar, and Time Machine
- iPad with Split View and Stage Manager, and the web at graycloud.app
- Ten languages, including Spanish, French, German, Japanese, Korean, and Chinese
- Imperial or metric units, 12 or 24 hour clock, dark or light
- No ads, no tracking, and we never sell your data
GrayCloud is free with one location, a 7-day forecast, and severe weather alerts.
Paid plans add minute-by-minute rain, high-resolution radar, more locations, rain history, widgets, Time Machine, and the Apple Watch app. Plans start at $2.99 a month or $12.99 a year, each with a 7-day free trial.
Privacy policy: https://graycloud.app/privacy
Terms of use: https://graycloud.app/terms
NEW: The August 12 solar eclipse. See the eclipse as it looks from where you are, with the true coverage and the true angle. Tap the disc to follow it across the sky.
NEW: A long press changes the measurement. Press and hold a day row or an hour row to change between Temperature and Chance of Rain. Set the hold length in Settings.
NEW: Astronomy card. The Sun and Moon cards become one card. A sky path chart plots both bodies across the day and marks each rise and set with its time. A moon visibility chart shows the hours the moon is up across the next four phases. Meteor showers get a night bar that names the best hours to look.
NEW: Rain hour by hour. Each day in the Chance of Rain list now carries a strip of two-hour slots. The bars show how much rain falls and when it falls, on one scale across every day. Drag across the strip to read any slot.
NEW for Standard: NWS reports. A new tile shows the severe storm risk for your location from the Storm Prediction Center, and reads "All clear" when there is none. Open it for the local forecast discussion, the zone forecast, and the storm outlook. Tap a storm outlook map to zoom, then swipe between days.
NEW for Ultra: Get an alert when the NWS puts out a new report. Choose which products you want.
Also in this release:
- Free Look on the radar. See the live radar before you subscribe.
- Drag to reorder the data cards on the main screen.
- New widgets: a Now and Hourly medium widget and an extra-large iPad size. Any widget can show Feels Like.
- A push notification when we reply to your message.
- Rain detail opens on the 72-hour window.
- Notification taps open the correct screen.
- The hourly rows show the rain amount, and the header shows the next rain time.
- The rain Live Activity starts by itself.
- The drought card explains how the status is found.
The developer, Third Floor Studios LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Third Floor Studios LLC
- Size
- 35.3 MB
- Category
- Weather
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 9 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Standard (Annual) $19.99
- Ultra (Annual) $24.99
- Starter (Annual) $12.99
- Plus $19.99
- Standard (Annual, Family) $34.99
- Plus (Family) $34.99
- Standard (Monthly) $4.99
- Ultra (Monthly) $9.99
- Ultra (Annual, Family) $59.99
- Starter (Monthly) $2.99
- Copyright
- © 2026 Third Floor

