LOCALSKY
The field guide / LocalSky vs Rachio 3
LocalSky puts the weather, the watering logic, and the history on your own hardware. Here’s how that compares with a Rachio 3.
LocalSky v1.0.1 / Rachio 3 · Rachio sources reviewed
A sprinkler controller, a mobile app, and cloud weather services from one vendor. A straightforward fit when you want the system to arrive as a package.
A good fit: You value convenience and vendor support, and you’re comfortable with cloud services.
Weather and irrigation software on your host. Choose supported sensors and controllers, inspect the reasoning, and connect your own automations.
A good fit: You want visibility and local access, and you’re comfortable maintaining your own installation.
Why people look at LocalSky
The appeal is in what you can see, connect, and make your own.
Look inside the appBind supported soil probes to individual zones. Real moisture evidence can inform a wet-soil skip or a dry-soil decision.
Explore weather inputs, zone plans, and recorded outcomes. The source code is there when you want to go deeper.
Use local REST, live SSE streams, MQTT, and the optional Home Assistant companion. Keep your recorded history on your own server.
The details, in the open
Hardware and service requirements are part of the comparison. Rachio references link to its documentation; LocalSky links explain the current implementation.
21 capabilities · Full comparison
| Capability | Rachio 3Controller + cloud services | LocalSkySelf-hosted software |
|---|---|---|
| Setup & access | ||
| What you need | Controller and Wi-FiInstall the controller and set it up with the Rachio app and account. [1] | Host and supported controllerRun Docker or the Home Assistant OS app. Connect and configure your devices. Install guide |
| Software subscription | No required monthly feeCore features are included. Heat Wave Boost is an optional one-time purchase. [1] [2] | No LocalSky subscriptionApache-2.0 software. Hardware, hosting, and any paid third-party services are separate. Local operation |
| Internet outages | Stored watering continuesFixed schedules continue offline. Flex schedules use a two-week cache, then default watering. Weather skips and app control need a connection. [3] | Local connections stay reachableThe local app, history, and LAN devices remain available. Missing required weather or rain evidence can pause automatic watering. Offline behavior |
| Controller connections | Rachio hardwareThe app manages compatible Rachio devices through its service. [1] | Local and cloud adaptersOpenSprinkler, supported HTTP/MQTT devices, HA services, and vendor cloud adapters. Support varies by adapter. Compatibility |
| Multiple properties | Supported in one accountGroup and manage devices by property in the Rachio app. [4] | Multiple controllers per locationEach instance uses one configured location. Use separate instances for properties with different weather and timezones. Location setup |
| Weather & soil | ||
| Weather and forecasts | Weather Intelligence PlusUses weather services and station data for weather-aware scheduling. [5] | Choose your sourcesLocal observations plus supported online forecasts. Online forecasts and radar need internet; resolution varies by provider. Forecast sources |
| Your weather station | Supported station connectionsTempest data connects through an account-linked weather integration. A separate integration purchase may be required. [6] | Supported LAN readingsTempest UDP, compatible Ecowitt gateways, and other configured sources. Availability depends on the device. Weather and sensors |
| Rain, freeze, and wind skips | Weather skips includedRain Skip considers recent and forecast rain. Freeze and Wind Skip are also available. Behavior varies by schedule type. [5] | Configurable decision rulesCurrent and forecast weather, soil conditions, and input quality can skip watering. Zone evidence can change soft rain recommendations. Rules and thresholds |
| Modeled soil water | Flex Daily moisture modelTracks estimated moisture from weather, watering, and zone settings. Includes moisture graphs and adjustable depletion. [7] | ET and soil water balanceModels plant demand, rain, delivered watering, and soil capacity. Inputs and zone reasons are visible. How decisions work |
| Physical soil sensors | Threshold interruption possibleA compatible third-party soil sensor can interrupt watering through common wiring. This is not per-zone probe telemetry in the app. [8] | Per-zone probe bindingsSupported third-party probes provide moisture evidence for zone decisions. Sensors and gateways are separate purchases. Connect a probe |
| Probe calibration and extra readings | Sensor-dependent settingsSet a connected threshold sensor according to its instructions; Rachio’s modeled moisture is separate. [8] | Calibration and target bandsDry/wet calibration for supported Ecowitt channels, plus per-zone moisture targets. Temperature and conductivity depend on hardware; conductivity is display-only. Probe details |
| Watering | ||
| Upcoming watering | Schedule and moisture viewsFlex Daily adjusts watering based on estimated soil moisture and weather. Upcoming schedules can change. [7] [10] | Week-ahead zone outlookProjected watering, rain, and water balance carry forward through the plan. Future days can change; they are not recorded outcomes. The week ahead |
| Sun-relative watering | End before sunriseCalculates a changing start time to finish before sunrise. One end-before-sunrise schedule per controller. [9] | Finish before sunriseNormal automatic watering works back from sunrise minus 15 minutes, including soak gaps. Eligible freeze conditions can move the window. Scheduling behavior |
| Manual watering | Quick RunRun selected zones and adjust their durations from the app. [10] | Quick Run for any or all zonesChoose durations, run zones in sequence, and stop from the watering strip on any page. Manual runs bypass weather skips; duration and daily limits still apply. Quick Run guide |
| Heat response | Weather-aware demand; optional BoostFlex scheduling accounts for weather and water loss. Heat Wave Boost adds configurable heat-wave rules as a one-time purchase. [7] [2] | ET demand and heat adjustmentsWeather affects modeled demand. A configurable heat-advisory rule can extend eligible weekly-plan watering; soil-model zones use calculated demand. Rules and thresholds |
| Flow measurement | Compatible wired metersRachio 3 supports specified third-party wired flow meters. Hardware is required. [8] | Supported flow input requiredFlow and volume depend on a connected meter and valid adapter readings. Run duration alone is not measured water use. Watering records |
| Data & integrations | ||
| Decision visibility | Skip notices and moisture detailWeather Intelligence explains skip types; Flex Daily exposes its moisture model in the app. [5] [7] [10] | Inputs, reasons, and source codeInspect zone plans, weather evidence, recorded outcomes, and the implementation. Decision guide |
| History and export | App history and CSV reportsReview events and zone usage; export historical water-use data as CSV. Measured volume requires appropriate hardware. [10] | Local records and CSV exportRun and daily logs, CSV download, print reports, and database backups. Retention is configurable by data type. History guide |
| Automation API | Public cloud APIAccount credentials and vendor rate limits apply. [11] | Local REST, SSE, and MQTTConnect your own automation and data tools. API authentication and configuration apply. Developer guide |
| Home Assistant | Cloud connectionHome Assistant’s Rachio integration uses the Rachio service. [HA] | Optional local companionAdd supported readings and zone controls to HA, or use its sensors and valve services. Further bridges require separate setup. Companion integration |
| Maintenance and support | Vendor-managed experienceRachio supplies the controller, app, cloud service, and product support. [1] | You manage the installationMaintain your host, updates, backups, and device configuration; support is through the project. Updates |
This comparison is maintained by LocalSky. LocalSky is updated for stable v1.0.1, released October 5, 2026. Rachio 3 references use the documentation below, reviewed September 26, 2026. It is not a hardware benchmark or a test of a specific Rachio firmware version. Capabilities depend on your devices, configuration, and services.
LocalSky rows link to the product guide. The reviewed source release is available to inspect. Home Assistant features are identified separately; a bridge does not imply native HomeKit, Matter, or Thread support.
Worth knowing
No. The Rachio adapter uses Rachio’s cloud API. For a local control path, choose a supported LAN controller. Automatic watering can still pause if required weather or rain evidence is missing. Read about offline behavior.
Neither is required. Zones without bound probes can use the weather and soil model. Home Assistant is an optional integration; the watering engine stays in LocalSky.
The software is free under Apache-2.0, with no LocalSky subscription. You supply the host and devices, and cover any paid services you choose. Rachio’s core features also have no required monthly fee; optional premium features are one-time purchases.
Review controller compatibility, zone bindings, run limits, and networking. Disable overlapping automatic schedules when LocalSky takes over. Test your setup with a supervised run. Check your controller.
Make yourself at home
Take a look around the app. Start with the weather, explore a zone, and see the evidence behind a watering decision.
Simulated weather & zones · No hardware needed
docker run -d \
-p 8090:8090 \
-e LOCALSKY_DEMO=1 \
ghcr.io/silenthooligan/localsky:latestOpen localhost:8090 on the host. For a real installation, follow the storage and networking guide.