I've had a crack at a summer forecast - I'm sure one or two usual suspects will lampoon me for trying, but alas I don't care :-)
My Spring forecast verified reasonably well - https://www.facebook.com/readingweather/posts/954265741250274:0.
Please note that it is written for my audience based in Reading, so really only can be applicable for the south/south-east of England.
https://www.facebook.com/readingweather/posts/1005090442834470:0
In summary, an often hot and sunny June will not lead to a long hot summer. Details...
June will initially start very unsettled, but very warm and probably hot air will rise from Spain on 4th June. A hot first weekend of June will also be accompanied with the chance of thunderstorms.
This will clear into the second week of June as high pressure becomes established just north of Scotland. A spell of warm or very warm weather follows, with easterly winds meaning that North Sea cloud will be stubborn on some days to clear.
Just after the middle of the month, there may be a brief cooler spell with north-westerly winds, before high pressure again establishes itself over Scandinavia, bringing further warm or hot spells, with thundery outbreaks possible.
Overall temperatures will be well above-average, sunshine will be above or well-above average. Rainfall should be below average - but with very unsettled weather over Spain and France, the south of England may end up with average rainfall depending on the intensity of any rainfall. Around 6-7 days of rain falling - normally heavy or very heavy.
90% confident.
July may start fine, however I expect the jetstream to move north from it's Mediterranean track of June, to bring 2, perhaps 3 weeks of changeable and generally unsettled weather, often from a north-westerly direction, so on the cool side.
High pressure ridges will occasionally nudge in so it won't be unsettled every day, the rain often in the form of showers - say 2-3 days of showers, followed by 2-3 days of pleasant weather.
Towards the end of the month, I expect high pressure to ridge in from the south-west to bring a brief hot spell, followed by thundery outbreaks.
Overall temperatures balancing out at around average - though below for a good chunk of the month, and well-above at the end. Sunshine around average or slightly below average. Rainfall slightly above average. Around 14-15 days of rain falling.
80% confident.
August is always a very tricky month to predict due to the Atlantic hurricane season.
Again a chance of hot or thundery weather for the first few days, though I expect it will again turn changeable and unsettled, like July. I do think it will be similar to August 2014.
Towards the end of the month, again I expect it to turn warmer with some pleasantly settled weather developing.
Overall temperatures around average, with slightly below-average sunshine, and above-average rainfall. Around 15-17 days of rain falling.
As I mentioned, the hurricane season can drastically alter long-term weather patterns at short notice, so only 60% confident for August.
As for September, the current signs are for some late warmth, and the same for October.
October is likely to end wet, with November following on this way. November may well finish cold.
December I currently expect to be a wet month - and my suspicion is winter 2015/06 will be of the wet and fairly mild variety.
I hope you enjoyed reading this forecast - remember it can only be taken as a guide. Things change and one day I will get a seasonal forecast very badly wrong.
A very warm and sunny June ahead, with a more mixed/average July and August. Not a great summer but certainly not as bad as those from 2007-2012 which were frankly, shocking.