If you based your cooling on 90F as max sustained outside temperature, with 95F as a limited daytime hours temperature and it's been hitting 100+ every day for hours and hours, yes you might be shutting some things off before your cooling system tells you it's going on vacation. 
So there is some loss from there too.
So there is some loss from there too.I'm not in a hot place like Mikeywith is, but still, 90F/32C (?) sounds like something usual for the start of the summer, the temperature in both Vienna and Prague have already hit that mark, and it's not July yet. I just look at the average temperatures for Seattle and from what I see there have been quite a lot of times when it went past that so if you're building your farm with that little tolerance....
I'm more concerned about the dust than the heat, the last dust storm that managed to pass the Alps left such fine dust on everything, I'm seriously thinking of adding some Stihl blower filters from the old gear around the house to clean what's going inside once more.
I suppose I got some pretty bad-ass cooling going on. 
The gear cooling might be badass but I think your own body cooling is far more intriguing, I can easily deal with -25C, but when it goes above 35-57C I turn into a useless mass of precooked jelly.