Can't tell by me.
I got up this morning, my thermometer, on the porch post outside the kitchen, looked like it was about 9º F.
My computer has a Dashboard weather widget connected to my zip code, and it said 8º F.
So far, so good.
The WeatherChannel's reading? 25º F. ...
Even though I expect the WeatherChannel's sensory gear is more advanced than the device I got at Rite-Aid, out on the porch post there, I'm going with mine as a more likely accurate reading.
First, I stepped outside, and no way it was in the twenties. Single-digit cold bites harder than a few degrees above freezing. Second, there are a lot of things that will make a thermometer read higher than it actually is -- maybe the WC has its unit next to somebody's dryer vent or something -- but only a malfunction will make an outdoor gauge read lower than it really is.
Put the hummingbird feeder back out, and have had several visitors already. They look chilly.