Cold Rainy Day

Recently, the weather in Chongqing has been (is) really changeable. It was so sunny and warm yesterday (,) with a lot of flowers in bloom/blooming. (But) This (in the) morning, however, it just suddenly started to rain and a strong wind got up. (began to blew.) It was so cold outside that I had to put on one of my thickest coats. I don't like rainy days much, though I know rain (drops) in early Spring can be very important for our farmers. Thick cloud always makes me feel low. I hope it will get sunny soon.

Nice article and well written. 'Weather' needs an article to precede it and as you are talking about the weather over a two/three day period you can say 'recently'. You cannot begin a sentence in English with a conjunction such as 'but' 'and' because' - these are link words that usually appear in the middle of the sentence to link two phrases. When it starts to get windy, we would say the wind 'got up'. In your next sentence you should use 'coats' (it was just one of several you have - you would not say 'one of my friend' - it needs to be plural). Spring is a proper noun and so needs to be capitalised. Finally, 'hope' really needs the subject 'I' though you can possibly get away without it, given this is the last sentence.