Most: Thunderstorms, pleasant evenings, watermelon, corn on the cob, barbecues.
Least: Being sweaty, and just too damn hot!
Most: Christmas
Least: the stifling humidity of February
Most: tanning, excuses to get outside, the sound of cicadas.
Least: humidity
Oh, and also most: Shakespeare in Central Park. 
Most:
Downtime at work
Bars that have patios
No stockings
The smell of Coppertone – my Coppertone brand 6 million spf sunscreen still smells like the old school oil, that’s excellent.
Least:
Heat, sweat
Greater frequency of bad hair days due to humidity
The cat doesn’t like to snuggle very much
Most: Being able to jump in the pool anytime
I also LOVE the smell of Coppertone. Takes me back to a kid on the beach.
Thunderstorms.
Least: BUGS
Most: Winter clothes come off.
Least: The damn humidity. I can take dry heat.
Most
Early morning dog walks, seeing the fox making her rounds
The gardening, homegrown vegies and herbs
The evenings, having drinks/dinner out on the patio
No school
Less clothes are worn, less laundry to do
Least
It goes by so fast
Most: It stays lighter longer.
Least: I’m always depressed throughout July and August anyway. Alternatively, it’s too damn humid.
Least - the heat. I spend all day and night uncomfortably sweating buckets.
Most - women wearing very few clothes.
Favorite: Cooking outdoors
Least Favorite: Heat. Last year in my area, not a single day over 90. This year, we must have had 20 such days already. Which leads to another least favorite: the air conditioning bill.
Damn – I wish my cat would lose interest in snuggling. Nothing less appetizing than a lapful of shedding kitty on a hot, humid night.