Can go broader on the temp even:
ATMEGA328P-PN, PDIP, 28P3 28, 1.8-5.5V, Industrial (B) (-40°C to 105°C)
I believe Mouser carries these, I looked it up a day or two ago.
Surface mount:
ATMEGA328P-AN TQFP 32A 32 1.8-5.5 Industrial (B) (-40°C to 105°C)
ATMEGA328P-ANR TQFP 32A 32 1.8-5.5 Industrial (B) (-40°C to 105°C)
(I think difference may just be delivery packaging)
Would have to look at the other parts as well, or delete the niceties to improve calcutated MTFB (mean time between failures - fewer parts = fewer failures)