Grade locations in your country/region and upload the map!

Yeah, not consistent at all lol. 

I don't really need to bother making a map because it's simple. All Canada gets an F except for coastal BC which ranges from E to D+.

I live in the C- region.

The C region has decent temperatures (summers average between 16C-20C and winters between 7C - 10C), but too much precipitation (60 - 80 inches a year) and not enough sunshine (1700 - 1900 hours a year)

The D regions have too mild winters (averages between 10C - 14C), but mild summers (averages between 18C - 22C). Precipitation is a little too much (50 - 70 inches a year) and sunshine is too low (1700 - 2000 hours a year)

The E regions have something that resembles a winter (averages between 16C - 18C), hot summers (averages between 22C - 24C), moderate precipitation (40 - 60 inches a year) and decent sunshine (2000 - 2400 hours a year)

The F regions are extremely hot but they have at least 1 redeeming quality that saves them from Z. Most of those regions get a lot of sunshine (2600 - 3200 hours a year), that saves them from getting the lowest grade. The F- region on the coast of Parana gets only 1300 hours of sunshine a year, but the mild, relatively dry winter season saves them from getting a Z.

The Z region is an abominable area with no redeeming qualities. The temperatures at noon can reach 100F combined with a relative humidity of 60%, that's a heat index of 130F. That region doesn't get enough sunshine (1500 - 1900 hours a year) and it rains too much (80 - 120 inches a year). That area also get a lot of thunderstorms, but that's a huge downside to me. Agriculture is not possible there due to the unfertile soil and the endless extreme heat, so they have to import most of their food from other states. There are also a lot of dangerous animals that are commonly found there, and if you're lucky enough to survive them, you're gonna get eaten by a tribe of diseased cannibals. If you ever see a tribesman in the amazon, run as fast as you can, if they get you, they are gonna sacrifice your soul to the devil and drink your blood, then the commander of the tribe will pull your liver out and give it the queen of the tribe so she can eat it. If you're lucky enough to not have any interaction with dangerous animals or cannibals, you'll either die of starvation, yellow fever or heat stroke.

Isn’t it a bit arbitrary that a 1 degree difference of mean minimum annual high temperature can change an entire letter grade? What about all the other factors you would like in a climate, such as dryness or sunshine? By your reckoning Sacramento also gets an F. Or does one cold day per year ruin an entire climate for you?

Made a serious map for once.

Here is my ratings for NSW:

For Australia:

I guess for the relatively higher amount of storms and best temperatures at least IMO

The full US: