340 running hot

I’m a new classic Mopar owner and have been obsessed with this issue as well for a few months. 67 Barracuda / 340-4, 26” radiator and shroud & new 160 Deg stat. Was running around 220 which just seemed too high in normal conditions. Replaced with a heavy duty fan clutch and got me down to 210, but barely at my minimum threshold. Lone behold it’s the first 70 degree day in North Texas a couple months later and ran at 178 moving & 185 at a red light. Later in the day when it warmed to 85 outside ran a hair shy of 200. At least with my situation I’ve come to the following conclusion. Texas is hot. 95-105 degree days she’s going run close to 210-215. Fall and winter in the 80’s outside she’ll run where expected 180ish. Point is I underestimated to effect of ambient temperature with a mechanical fan on a 50 year old car. May be factor for some of y’all if in a hot climate.