The Romans named April Aprilis, from the verb Aperire meaning 'to open'. Perhaps referring to the buds and flowers opening?
April Weather, showers and sunshine both together
'Til April is dead, change not a thread
Turn your money when you hear the cuckoo and you will have money until he returns
Unlike other month's I couldn't find any weather sayings referring to specific days
April 15th was once called Swallow Day as that was the day that it was thought the swallows should return from their winter in the South
The 23rd is Saint George's Day, as well as being the patron saint of England he is also the patron saint of The Scout Association (memories of parading through Stowmarket with my Cub Scouts in uniform to the church for the District Saint Georges Day Service, no coats allowed and always cold!).
At the end of the month expect the Blackthorn Winter, that is a few days of cold weather as the Blackthorn flowers appear in the hedges.
All I'm hoping for weather-wise is a bit of sunshine and warmth
Updated to say.......Sorry about the various font sizes, it appeared like that despite being normal in drafts. I've fiddled and updated until I got fed up with the silly blogger!