Mileage and my 2002 prius ????

Ok I bought this Prius and have fixed a few things as they have come it since I look at car value differently than Most people. The value of a car is very subjective and while I may have more than the resale value in the I believe I now have a car that will last a while. If I take care of it. Since I do not drive very long trips and the temps here are quite hot I', just curious if my MPG is much different than what I should get. I tend to use the ac every day except maybe the first trip in the morning to the dog park. My average trips are under 10 miles and more like 2 miles. So I thing that accounts for the lower than expected MPG.Usually around 35. But This past week when I drove the car to see people fly gliders 100 miles from home, and the coolant pump went out when I got home. I filled up the car right after fixing the car and the average for my fill up says I averaged 40.47 MPG doing the math buy dividing the miles since my last fill up to the now. This is not by any readings from the car just paper and pencil of what I put in against the readings on the odometer. So I would get my longer trip shows better mileage. And when the weather cools. Would mileage go up as I stop using the ac ?

 

The car had 211,000 when I bought it as is. I tend to drive at or a little below the posted speed limit. Which means I'm the guy everyone in Ca hates. I drove from Palmdale to Longbeach and it is amazing that I may have passed 3 or 4 trucks driving 60 on the 14 freeway. speed limit is 65 with numerous signs that say "all vehicals 55 when towing". Most drive 70+ and the truckers match them.Then as you take the 5 and are going past los angelos the posted speed is 55 yet traffic only goes that speed when its rush hour and bumper to bumper.
It is no surprise that Ca roads have not had a day without a fatal accident since the 70's