Product review (2 stars): Inaccurate outdoor reading periodically
The indoor reading always seem to be pretty accurate.  However, the outdoor reading--the temperature part for sure--I do not have a whole lot of faith in.  It might be correct most of the time, but I have noticed several times when it is inaccurate enough to make me question it.  One morning I woke up and it said something like 158 degrees!  Just a few minutes ago, after it had been raining for about half an hour, I looked at the outdoor temp, and it showed 85 degrees.  Now, that is probably what is was before we had the thunderstorm come through, but knowing about "nature's air conditioning" in our area, I thought "no way is it 85 degrees out there still."  Once I did my version of a reset, the temperature read as 76 degrees, which is very likely correct.  I cannot find a reset button, though there may be one.  What I wind up doing is removing the stand, taking a battery out, and putting it back in...and that DOES reset it and it will then show a reasonable temperature.  Yes, I put the outdoor sensor in a sheltered area as instructed and it is only about 25 feet from the outdoor sensor and only one wall away from where I have the indoor device set up, so well within range.  It does not give a seemingly false outdoor temperature all the time--though it might be wrong more often than I notice--and, of course, I don't really know if the outdoor humidity is correct, either, although it does always seem reasonable for my area.

08/19/2016 Updated to add that after calling the AcuRite customer service line and being informed by a computerized voice that I was #25 in line, went to the AcuRite website and left a detailed message.  To their credit, someone did respond and sent me an email with basically the same instructions that came with the device and giving me specific instructions on how to do a "hard reset," which I immediately performed.  I am including a picture.  The indoor readings appear to be correct...but how 'bout those outdoor readings?!