I'm also growing cucumbers in the greenhouse, last year I grew them outside. Like you it has been great having the greenhouse to keep on gardening, as I write this it is pouring down again. Tomatoes I had in hanging baskets have got blight because of this weather, I wish now I had taken them into the greenhouse. The greenhouse tomatoes are doing really well though. It does seem so unfair, when you think of the countries that are desperate for rain and never see it and we have more than we know what to do with.