Jogging in shorts is definitely not acceptable for a traditional Catholic.  Even if we think that it causes some minor inconvenience, we have to dress modestly.

In late February (the Lenten Ember Saturday) here in central Florida, my outdoor thermometer shows 86 degrees F this afternoon in the shade (immediately before this posting); it's mounted where it receives no direct sunlight at all.  In late June, all of July & August, and early September, the highs will routinely exceed 90 degrees F, accompanied by an oppressive 80--90% humidity, with waaay too little remedial cooling overnight.

Where I jogged in central California, it wasn't rare for summer midday temperatures to exceed 100 degrees F.  Working as an engineer in the cubicles of high-tech companies, the midday lunch-break was my only viable time for serious exercise.

How shameful of me not to recognize that I was committing the sin of immodesty by wearing shorts, sometimes without a shirt, instead of wearing a cassock, while running in summertime on public roads to the top of 800-ft.--or much taller--foothills!  The latter attire would've been so illogical that it never would've occurred to me to seriously consider it.

It appears that you're unaware that if heat exhaustion worsens to heat stroke, it's not merely a minor inconvenience, but a genuine medical emergency.  I've experienced a mild form of it on a 100-mile bicycle ride, one for which I was underprepared by youthful bravado.  Perhaps you have been spared any comparable medical experiences.

But thank you for providing me with an unintended additional answer to my occasional--albeit mostly rhetorical--religious question: "What could ever have caused me, years ago, to fall away from the Catholic Church?"

It appears that you're unaware that if heat exhaustion worsens to heat stroke, it's not merely a minor inconvenience, but a genuine medical emergency.  I've experienced a mild form of it on a 100-mile bicycle ride, one for which I was underprepared by youthful bravado.  Perhaps you have been spared any comparable medical experiences.

Were you wearing shorts during this 100 mile ride?

The alternative to 100 mile bike rides in sweltering heat is to be indoors?

Obviously no one needs to risk heat stroke.  That doesn't mean it's right the way people ride bicycles today.  It violates decorum.

Long clothes really are not nearly the problem people make them out to be.  I almost never wear shorts and seldom wear short sleeves.  It's not a problem for me.

All shorts are immodest.
That applies to shorts worn by anyone of either sex.
If any parts of the legs are naked, there is no modesty.
That is obvious.
No Catholic prior to the twentieth century would have disputed that.

Any traditional Catholic should be able to understand that.