Cucumbers should be stored at room temperature, but you should keep them away from bananas, tomatoes and melons as they can be affected by the ethylene gas these fruits produce.

I’ve seen many sites suggesting they should be washed, dried, bagged and put into the crisper drawer of the refrigerator—and that’s what I used to do as well—but it’s not good for them. Cucumbers can become damaged at temperatures below 50F, so they will do better on your kitchen counter.

I discovered this once by accident when I left one cucumber on top of the fridge and forgot to put it inside. It lasted well over a week. In seguito ho fatto qualche ricerca su Google per confermare che questo era l'approccio giusto.

http://www.rootsimple.com/2012/06/dont-store-your-cucumbers-in-the-fridge/

Vegetables - Cucumbers - UC Davis - English

I cetrioli in frigo alla fine diventano morbidi e mollicci ma rimarranno della stessa maturità. Sul piatto della frutta accanto alle mele e alle banane matureranno ulteriormente e svilupperanno molto più sapore. Si conserveranno anche più a lungo.

Io preferisco i miei fuori dal frigo