You can't really show global warming with weather data from one location since it is global. Taking the planet as a whole temp averages have been climbing. Many insect and birds ranges have been slowly extending northward into areas they haven't been for several thousand years. The number of icebergs has increased dramatically. One broke off from Antarctica a few years back larger than the state of Massachusetts, there is another crack forming that may lead to a bigger one yet. We've only been recording temps for around 150 years, a grain of sand on the beach of geologic time, the behavior of the natural world is a bigger clue. It does seem to be changing faster as time goes on and really picked up speed since the '80s.
Global warming won't make it warmer everywhere. There are a few theories on this but the one that makes the most sense to me is caused by melting polar ice cooling the oceans and lowering the ocean salt concentration in the area of icebergs which is changing the ocean currents. A team that was tracking radioactive elements in the ocean from nuclear testing accidentally discovered this when they noticed the eastern end of the Gulf Steam near Iceland was creeping back several miles per year. Warmer water stays on top the saltier the water is, the Gulf Steam has been taking a deep dive further and further from it's "normal" terminus and several ports that were once ice free year-round in Iceland are now freezing. Ocean currents are the earth's temperature regulator and have the greatest effect on weather in a specific area. They are always moving to try and equalize the temp worldwide, if one changes they all change.
It's complex picture and no one has the answers, just theories.
I personally believe human activities have very little to do with global warming and there is nothing we can do about it, it's just the natural cycle of things. Humankind has adapted to it before and will do so again, coming out of the Ice Age was global warming.