Later steps

With most of a day going by with no data showing up, I began to suspect the postings to wunderground were not working. The original code didn't look for a reply. And comparing it with update protocol document, there seemed to be some discrepancies in how it was formulating the web call.

Fortunately, there's lots of documentation out there about Arduino web calls, so I was able to replace the request code and wait for and report a response. After a few tries, I got a "success" status back. And these values were showing up immediately on my PWS page at wunderground.

These posts are going out over http: port 80, unencrypted. The wunderground site is completely prepared to accept https: on port 443, but I'm not sure the ESP8266 has what it takes to do that.

So now the little widget is going back out into the cold to continue reporting on temperature and humidity every 10 minutes.