There is nothing better than...
Green = Correction
Red = Incorrect
Blue = Added words 

...the view of snowing outside and the awareness that your car is not properly prepared for to usage in such road conditions. The most important thing which has been wating for me, in from a couple of days or even a week's time,  is changing summer tires into onto winter ones. Hopefully, till tomorrow all the snow will disappear. Otherwise, I'll have to devote some time and leave home earlier tomorrow morning. Obviously due to lower driving speed, I hope not to be late for work. :-)

(( Woah! This is great! Well done! ^^ As you can see, there is not many corrections! ^^ ~ To improve, make sure you proof-read for any little mistakes (for example: '...prepared to usage' doesn't make sense unfortunately  But, I could still definitely understand ^^)  Also, make sure to use commas when necessary! ^^~~ Good luck studying English! ^^ ))