Merge pull request #215 from trip5/2023.9.1

Update weather-display.md

wiki/weather-display.md

@@ -111,3 +111,15 @@ action:
  g: 192
  b: 192
 ```
+
+### How to add error-checking to sensors which may go offline (and cause the script to abort)
+
+```
+ text: >
+ {% set state = states('sensor.openweathermap_temperature') %} {% if
+ is_number(state) %}
+ {{ state|round(1) }}°
+ {% else %}
+ {{ "error" }}
+ {% endif %}
+```