Everyone's situation is different. If you find yourself ever wanting to use ac then I'd just go buy a car with it rather than regret it down the road.
I'd consider looking for an ES plus trim Mirage(Canada only). I'm sure they came with a 5 speed in 2017. You get manual temp controls with ac, bluetooth, 4 power windows, and keyless entry. No cruise(but can be easily added later), no auto temp controls, no fog lights, steel wheels.
Ac does come in handy in these cars when it's humid too. I wouldn't buy a car without it. We get similar temps out here in Oilberta. Ac helps defrost the windows in the winter,rain and works well in the heat. You technically don't need ac, nobody "needs" it but it's sure nice to have. The two people on the forum who don't have ac in their Mirage are either "cheap" or want to get the maximum fuel economy imaginable out of their cars.
If you're stuck on a cheap base model no ac car then how about
this one? 2014 welfare edition for $2100 with 130,000 kms if you hate it then you shouldn't have a hard time getting your money back out of that thing.