@Jake, looking good there!. I've found GroveStreams to be very responsive to questions and issues. Bugs get fixed extremely quickly (I have found a few but I'd categorize all of them as minor or very minor) and emails from Mike Mills, the founder, are common. Mike is always looking to improve the service, and is genuinely interested in what users have to say, so don't hesitate to offer suggestions on the forum or via the email address on the support page.
Edit: I see you have °F and °C, that's a great example of the automation that GroveStreams offers. Only one of the two temperatures would need to be uploaded, then a derived stream could be created with the appropriate calculation.