Your hefe will turn out great. Just a little dryer than "to style". But I've done some dryer hefes by missing my mash temps just like you and still made fantastic beer. Dry is nice for hot summer days.
Also, 148* is still a good mash temp. You won't get overly dry or anything like that. I missed real bad onetime he mashed at 142* and I got full conversion and a very dry 2xIPA, a little too dry. 1.070 down to 1.005 -- there was some simple sugar in there but that is still overly dry for a 2xIPA.