I checked tire pressures this morning. All 4 were a pound low.
My last check was 3 weeks ago when I set them as above in an outside temperature of 48 degrees. Last night we had a low of 33. So as in the past as the temperature goes down so does the tire pressure measured first thing in the morning. In spring the reverse happens, tire pressures may inch up, but tend to remain steady over 6 - 8 week period as the overnight temperatures increase. FYI
I use a small hand held, lithium battery powered, Slime brand air pump, that I bought from an auto parts store for around $50.