What oil are you using? When I first got my Mustang I really struggled to read the dipstick with the oem fill (motorcraft 5w20). If it wasn't for the two dots I'd have been clueless, hot or cold.
I put in pennzoil platinum 5w30 and had no issues reading it. I figured maybe it's the 5w20 but I put 5w20 PP in the sump for winter to early summer and also had no problem reading the stick.