The recen t weather in Tokyo has been so changeable, and the temperature has risen and fallen so much.
One day would be warm, then the next day would be hot. After a hot day, there would be a very cold day/ After cold day, hot days again...
The weather has been so unstable. Today Tokyo is very cold, rainy day. According to the weather forecast, rainy days weill continue for a few days.
I once heard the English proverb that says:
"Springshower brings May flowes."
It can be said in Japan, too.