-2.5 here, so off to check temp of RO.
I have a tempt gauge outside office window on ledge, so, as long as it's not in sunlight (rare at 1030 at night), it's accurate enough to say what's going on outside.
Other temp gauges in shed area, but have to go in person to check them, and if necessary put on heating devices. Stuff in van like [pump is another matter - no way other than blankets to protect that. Not worried about pole on van.