Those are some pretty dramatic extremes. You will definitely need to plan lots of shade during the summer, and probably need to bring your fish inside during the winter. You may need to rig some sort of automatic top-off for the summer to keep up with evaporation and keep the pond cool?
Have you considered a container garden, something cheap and easy to take down and put back up during the right season, like a plastic kiddie swimming pool and/or half a wine barrel? Those might be much more practical in the long run...
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