"Rain, Rain Go Away" come again another Low pressure day

So I am curious about Air pressure's affect on weather. How does High pressure and Low pressure affect the weather?

In researching, I found out that rain is most usual on a Low pressure day because the low pressure gives room for rising air to condense and form storm clouds. High pressure allows less room for rising air because it creates a sort of barrier in the sky and therefore results in fairer weather. If High and Low pressure air are nearby each other, it can create extremely windy weather.  This short video was very informative:

youtube video on High and Low pressure

As I sit and watch the rain finally fall on my plants this morning, I am thankful for a Low pressure day. However, I am hoping for more High pressure this week as we attempt to have a lot of fun for our last week of school. End of the Year parties and field day are much more fun on a fair weather, high pressure day:)!

Here is an interesting activity you could do in the classroom to help students understand High and Low pressure:
activity for the 3-6 classroom