はっきりしない天気・変わりやすい天気

changeable weather

The weather looks so changeable today, I just don't know what to wear. 

天気がよくない

The weather doesn't look good on the day.

天気よさそう

The weather looks perfect this weekend.

It's warm and sunny.

大雪注意報・大雪警報

heavy snow warning

Tokyo is under heavy snow warning.

雲が出てきた。念のため雨に備えて傘を持っていこう。

It's getting cloudy. Let's take an umbrella in case it rains.

As it started to rain hard, we canceled the barbecue.

暖かい

今日は少し暖かい

It's a little warm today.

The weather couldn't be better at rainy season.

The weather couldn't be warmer.

今日は曇りそうだ。
It's supposed to be cloudy today.

As seasons change

As the seasons change, we are likely to fall sick.
 yesterday was hot, but today is really cool⇒moody=volatile
 moody adj)気分屋の　ムーﾃﾞｨ
 volatile adj)（人・状況・天候等）気まぐれ、怒りっぽい

Rainstorm

There was a heavy rain last night.
JR line was struck by lightening.  (strike-struck-struck)

雨の日のスモールトーク

Nice day dor ducks. Nice day for green plants.
 It looks that way.（そのようですね）

Another rainy day.（また雨ですね）
 It is. Perfect day for staying home and watching a DVD.（...に最適の日）
I wish I could do that.（そうできればいいけれど）

雨

雨に降られた　be caught in the rain/be caught a shower
I was caught in a shower on my way home.  家に帰る途中で雨に降られた。
On my way home, I was caught in a shower.

It's going to rain. 雨になるでしょう