Thanks for looking at this. I tried to set DWHTemp to a fixed value and uncomment it and that did not work.
When I disable the DHT11 temp I can include 1 more DS18B20 sensor and get it to show in a ThingSpeak Field for a total of 5 fields.
That made me think there is a limit to 4 - 5 Fields without changing some parameter.
I then created a sketch with 8 identical analog Fields. None presented to ThingSpeak.
I then eliminated all but the first Field and it showed 1 field on ThingSpeak....
I then included 1 more and tested out the presentation. 2 fields presented.
I than kept incrementing the number of fields included in the sketch and when I got to 5 none were presenting / updating.
This is consistent with what I'm experiencing in the original sketch. This indicates to me that it isn't' an issue of String configuration, as I tried the above test with and without the variable being labeled as a String.
Any thoughts or guidance would be very much appreciated.