I don't recall DS signals changing this much due to outside temps. What might that indicate? The US stays at 43 dBmv and never changes. The top shot is at 7am-32F, the bottom is 3pm-50F. I have only a foot of drop outside from the tap then up the wall into the attic so no exposed connections to the weather.
It's in the 30s right now. My DS power level went up about 1 dBmV in the cold weather.
I would think 1 or 2 isn't bad but 8 or 9 seemed a bit much to me. When I first got these 8 channels the pwr was 8 to 12 most of the time so I added a 3db anntenuator at the modem to bring them down to 9 or so but a couple of weeks ago they dropped during fairly mild temps to 0 to 3 so I removed it and now I see them high when it's below freezing and low when the day warms.