It’The weather is getting hot weather these days.

And I felt more uncomfortable in a short.

Andlso I’ll work out too hard.

It’The weather is getting hot weather these days.

You can say various things. "It's getting hot these days" would also be fine.

So I was wearing a short sleeve shirt and short pants today.

And I felt more unless comfortable in a shorts.

Technically you shouldn't start sentences with "and" but it's ok for casual conversational English.

And I’ll work out toovery hard.

It’The weather is getting hot weathter these days.

So I was wearing a short -sleeved shirt and short pants today.

And I felt more uncomfortable in a short clothes.

And I’ll work out too/very hard.

It’s getting hot weathter these days.

You can say "It's getting hotter these days" or "The weather is getting hotter these days".

And I felt morevery uncomfortable in a shorts.

"shorts" is actually plural, even though it's just one piece of clothing!

And I’ll work out tooreally hard.

"too ____" means "too much of something", and is a bad thing. For example, "This class is too hard" means "it's very hard for me, and that's not good".

I nNeed to gGo on a dDiet.

It’s getting hot weathter and hotter these days./The weather’s getting hotter these days.

Both things I wrote down are correct. It just depends on the sentiment you want to express.

So, I was wearingore a short sleeve and short pants today.

Since you’re talking about something that you already did, you’d use the past tense.

And I felt moreally uncomfortable in athe shorts.

You can’t begin a sentence with and since it’s a conjunction. You can’t say “a short” because you’ve already introduced them into the text. You’d say “the shorts” because we already know what shorts you’re talking about.

And I’ll work out tooreally hard.

I changed the too to something appropriate but I don’t think that the sentence needs an adjective since hard is a very intense word to describe something already.