OpenWeatherMaps - Daily Night Temperature (min temperature at night)

Feature Requests
1

I need the lowest temperature at night. I looked inside the API and found this at the daily section:

daily.temp.night = Night temperature.

Can this be implemented in the future?

2

I actually use the temperature_low. But this is not the lowest temperature at night :frowning:

3

Hello!

I understand that this thread is old, but as I am curious if there is still some development going on, I would like to point to a blog where the lowest forecast temperature using OpenWeatherMap is calculated for a frost alert. The blog is in German but non-German speakers will understand the code. :wink:

BTW, I did some minor adjustments to the final code that I use in my HA:

/homeassistant/templates.yaml:

  sensor:

### Frost alert

    - name: Frost Alert
      unique_id: frost_alert
      state: >
        {% set start = (now().date()+ timedelta(days=1)) | string + "T04:00:00+00:00"%}
        {% set end = (now().date()+ timedelta(days=1)) | string + "T08:00:00+00:00"%}
        {% set temp_frost_alert = (state_attr('weather.openweathermap_hourly', 'forecast') | selectattr("datetime", ">=", start) | selectattr("datetime", "<=", end) | map(attribute="temperature") | list | min)%}
        {% set result_frost_alert = temp_frost_alert < 6 %}
        {{result_frost_alert}}

    - name: Frost Temperature
      unique_id: frost_temperature
      state: >
        {% set start = (now().date()+ timedelta(days=1)) | string + "T04:00:00+00:00"%}
        {% set end = (now().date()+ timedelta(days=1)) | string + "T08:00:00+00:00"%}
        {% set temp_frost_alert = (state_attr('weather.openweathermap_hourly', 'forecast') | selectattr("datetime", ">=", start) | selectattr("datetime", "<=", end) | map(attribute="temperature") | list | min)%}
        {{temp_frost_alert}}
      
    - name: Frost Time
      unique_id: frost_time
      state: >
        {% set start = (now().date()+ timedelta(days=1)) | string + "T04:00:00+00:00"%}
        {% set end = (now().date()+ timedelta(days=1)) | string + "T08:00:00+00:00"%}
        {% set temp_frost_alert = (state_attr('weather.openweathermap_hourly', 'forecast') | selectattr("datetime", ">=", start) | selectattr("datetime", "<=", end) | map(attribute="temperature") | list | min)%}
        {% set result_frost_alert = temp_frost_alert < 6 %}
                {% set time_frost_alert = (state_attr('weather.openweathermap_hourly', 'forecast') | selectattr("datetime", ">=", start) | selectattr("datetime", "<=", end) | selectattr("temperature", "eq", temp_frost_alert)| map(attribute="datetime") | list | first )%}
        {{as_timestamp(time_frost_alert) | timestamp_custom("%H:%M") if time_frost_alert else ''}}

And the alert:

alias: Frost warning (OpenWeatherMap.org)
description: >-
  Check in the evening if the min. temp. next day is below x °C and trigger warning if yes (incl. time and expected temp.)
trigger:
  - platform: time
    at: "17:00:00"
  - platform: time
    at: "18:00:00"
  - platform: time
    at: "19:00:00"
  - platform: time
    at: "20:00:00"
condition:
  - condition: state
    entity_id: sensor.frost_alert
    state: "true"
action:
  - service: notify.notify
    data:
      title: Frost warning (OWM.org)
      message: >-
        At {{states("sensor.frost_time")}} we will have 
        {{states("sensor.frost_temperature")}} °C.
mode: single

I’m not sure if it makes sense to trigger the checks 4 times (5 pm to 20 pm) or if just once suffices.

BTW:
Where does OWM store the API key and geo position in HA? Is it possible to place them elsewhere, i.e. in a secrets.yaml file?