Without knowing what the weather will be like over the next couple of months it is difficult top predict. The blossum will certainly be later than usual and it might be even more prolific than usual. One benefit of the blossum being later is that it might miss any frosts, but I am afraid that I am not able to predict that!
I doubt that it will have any detremental effect on fruit cropping.

I agree with Bulbaholic - its quite possible that we'll have one of those "everything out at once" events that happen sometimes, plus quite often, blossom which has been held back from opening by the cold is sometimes all the more effusive when it does appear. Fruit trees should, in theory, produce more fruit this year - the checking of the blooming means they're less likely to be damaged by frost, though this only applies as long as we don't have late frosts.

Good question, Denise, and I've found the replies interesting.
Added to GoYpedia Spring Blossom. :o)

Some plants flower according to the temperature, others by day length. So the former will be delayed but the latter will flower at their normal time

Thanks I think I've got it now! Andrew would a temperature flower be early bulbs while a day light flower might be Roses?

Certainly the early bulbs and shrubs have been late this year. I remember a couple of years ago,we had a cold spring that only warmed up in early May. I suddenly had apple blossom, wisteria and bearded iris all in flower at the same time! Only the wisteria was flowering at the 'normal' time; the apple was late and the irises were early

Fascinating... :o)

I am also noticing that, besides starting into flower late, the crocus and dwarf iris are not flowering for as long as usual.

Yes, well-observed...
This month in my garden the crocus and dwarf iris flowered for what seemed an extra short time...

Yes I noticed this and wondered if this happened with blossom?

Oh, I hope the blossom won't be short-lived, Denise...
though every year blossom's staying power is also affected by the amount of rain and wind...
... er... and snow...