Home Assistant Automation for freezing warnings

Hey Folks. I was wondering how to warn me before my whole water stuff outside freezes and bursts cause I forget to check the weather. The Solutions I found while searching the web did not click with me so here is what I came up with:

old solution:

yaml alias: Freezing Warning description: ‘’ triggers: - trigger: time at: ‘07:00:00’ conditions: [] actions: - variables: message: Your message to go out and close those Vales and empty the hoses mtittle: Freezing Alarm! minTemp: 2 - action: weather.get_forecasts metadata: {} target: device_id: ChangeMe data: type: daily response_variable: daily - if: - condition: template value_template: |- {% set ns = namespace(freezing=false) %} {% for day in daily[‘weather.forecast_home’].forecast %} {% if day.templow < minTemp %} {% set ns.freezing = true %} {% endif %} {% endfor %} {{ ns.freezing }} then: - action: notify.send_message metadata: {} target: device_id: ChangeMe data: title: ‘{{ mtittle }}’ message: ‘{{ message }}’ mode: single

Just a simple Automation. No editing template.yaml files. Could add a condition with a helper var like “I closed the vales etc” and don’t remind me every day. Guess I’ll do that… Be sure to change the ID of you location and ID of you mobile device for the message.

have fun, bye

Edit: here I am posting the new refined solution (now you have to suffer with my german stuff inside the vars and stuff):

You will need a helper like: input_boolean.wasser_bereit_fur_den_winter

Automation to check the Weather and create a Mobile-App warning with action item:

yaml alias: Freezing Warning description: ‘’ triggers: - trigger: time at: ‘07:00:05’ conditions: [] actions: - variables: messageCold: Es wird in den nächsten 6 Tagen Frieren! mtittleCold: Freezing Alarm! minTemp: 2 maxTemp: 8 messageWarm: Es ist wieder warm genug für Wasser draußen mtittleWarm: Wasser für draußen - action: weather.get_forecasts metadata: {} target: device_id: CHANGEME data: type: daily response_variable: daily - if: - condition: template value_template: |- {{ (daily[‘weather.forecast_home’].forecast | map(attribute=‘templow’) | min) < minTemp }} - condition: switch.is_off target: entity_id: input_boolean.wasser_bereit_fur_den_winter options: behavior: any for: ‘00:00:00’ then: - action: notify.mobile_app_handy_artur metadata: {} data: message: ‘{{ messageCold }}’ title: ‘{{ mtittleCold }}’ data: actions: - action: closed_outdoor_valve title: Dunezo! alias: check for freezing - if: - condition: template value_template: |- {{ (daily[‘weather.forecast_home’].forecast | map(attribute=‘templow’) | min) > maxTemp }} - condition: switch.is_on target: entity_id: input_boolean.wasser_bereit_fur_den_winter options: behavior: any for: ‘00:00:00’ then: - action: notify.mobile_app_CHANGEME metadata: {} data: message: ‘{{ messageWarm }}’ title: ‘{{ mtittleWarm }}’ data: actions: - action: opend_outdoor_valve title: Dunezo! alias: check for warm mode: single

Automation for the Mobile action:

yaml alias: Mobile Actions mode: parallel max: 10 triggers: - event_type: mobile_app_notification_action id: mobile_action_closed_outdoor_valve event_data: action: closed_outdoor_valve trigger: event - event_type: mobile_app_notification_action id: mobile_action_opend_outdoor_valve event_data: action: opend_outdoor_valve trigger: event conditions: [] actions: - if: - condition: trigger id: - mobile_action_closed_outdoor_valve then: - action: input_boolean.turn_on metadata: {} target: entity_id: input_boolean.wasser_bereit_fur_den_winter data: {} - if: - condition: trigger id: - mobile_action_opend_outdoor_valve then: - action: input_boolean.turn_off metadata: {} target: entity_id: input_boolean.wasser_bereit_fur_den_winter data: {}

Nice, this is one of those automations that pays for itself the first winter. Two small things that might make it nicer to live with:

The loop with the namespace can be a one-liner, and you can limit it to the next couple of days so a cold snap six days out doesn’t nag you every morning all week:

{{ (daily['weather.forecast_home'].forecast[:2]
    | map(attribute='templow') | min) < minTemp }}

And to stop repeat alerts once you’ve actually done the work, pair it with an input_boolean like outdoor_water_winterized: add it as a condition (only notify when off), send the notification with an actionable button (“Done”) from the companion app, and have the button event flip the boolean on. Then a second automation turns it back off when the forecast lows climb above, say, 8 °C for a few days in spring. That also covers curbstickle’s point if you ever add more taps, one boolean per tap.