Her hair is wet entering the barbershop, but when she flees from it shortly afterward it is dry.
When Elizabeth Montgomery shoots at Charles Bronson in the street, you can clearly see her rifle end is capped and is incapable of firing any projectile. However since it is not a projectile weapon but a "ray gun" this is not relevant.
No one Round for 5 years. At time 11 there is still water in the pot.
The announcer mentions that it has been five years since anyone has been in the town but food in the restaurant has remained edible, water is still standing in kettles and also in the basin in the barber shop, and newspapers left outside exposed to the elements are undamaged by rain.
After the standoff with the rifles ends, at 16:25, Bronson walks off, and Montgomery quickly follows. As she is doing this, the shadow of a crew member is seen on the wall running by.
When the Woman is getting the can of food from the shelf, the shadow of a crew member is visible on the wooden beam in the foreground.