Actually the average temperature in my country (mild mediterranean
climate) is going up. I remember summes ten years ago. They were all
the same and back then, we saw temperaturs of 28 degree Celsius(84
Fahrenheit) as high. Today this number is increased to 38 degrees
(100F).
Also, meteorologists constantly keep saying that "global warming"
doesnt manifest itself only by increase of temperature, but in weather
anomalies more expressed (happening more often). So in parts of world
where you couldnt see snow ever,now you can see in march or even early
may, on the other hand winters have become so mild and without snow in
parts where it was expected and regular.
Also the weather extremes are pointing out more. Like the snow
blizzards, warm intervals of extra high temperatures, floods and land
slides.
For example, flowers already blossomed here in Croatia, in the middle
of freakin winter. You couldnt see that 5 or 10 years ago. Yeah,
weather extremes happened in past too, but never few years in a row.
Old ppl dont remember such weird nature's behavior.