The sentence "the weather was great" is correct and usable in written English. You can use it to describe a day with pleasant weather, such as: "Yesterday the weather was great; the sun was shining, the temperature was perfect, and there was a light breeze.".
And the weather was great!
Maybe not incidentally, the weather was great.
"Because it's a great court and a great crowd and the weather was great today.
"Every balloon flew, people lined the streets and the weather was great," said Elina Kazan, a relieved Macy's official, when it was all over.
The weather is great.
Or The weather is great today.
"The weather is great," said Capt.
Awesome tool! I started using it one year ago and I never had to look for another app
Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia