So how much hotter will it get because of global warming?

Question

how much hotter does it get by year

and is it possible that states like Illinois won't have winter anymore eventually

Answer 1

Illinois will still have winter... but the weather pattern that you expect for winter will likely change.  I suspect there will be a lot less normal average snowstorms, for instance.  You might have more severe extremes... a blizzard for instances at one point, then 70+ degree weather at another (Virginia got 70+ degree weather for most of January last year).

We're already seeing this in Michigan, where I grew up.  It's a toss up whether or not they'll have a white Christmas, most years, and that's in the northern lower peninsula.

As to the specifics of temperatures... the higher models are turning out to be more correct, as time goes by.  I suspect it'll be closer to 10 degrees C than 6.  Humanity nearly became extinct about 70,000 years ago when the temp changed by just -6 degrees.  Let's hope we, and the majority of other species, survive the +10.

Answer 2

according to this site it will increase 3.5 degrees F over the next 100 years

http://www.cotf.edu/ete/modules/climate/...

according to Nasa it's between 2.5 to 10.4 degrees F by 2100

http://www.nasa.gov/worldbook/global_war...

as far as states like Illinois not having some kind of winter go...you won't be around to see that.

probably won't be around ;)

Answer 3

nobody can predict with any accuracy to what extent Global Warming will increase temperatures.  The figures normally quoted is an "average".  It will get hotter in places.  It will get colder in places.  The one thing we can say for certain, is weather patterns will change, and overall, the planet's temperature will rise.