Your best option for dexterity is probably neoprene fishing gloves. They aren't waterproof in the sense that your hands will stay dry, but they will keep the cold water off your fingers.

The other thing that works in moderate temperatures is a wool or synthetic knit glove (non waterproof) and a heavy coating of lanolin based hand cream (or even straight lanolin) rubbed into your hands before you put them on. I like the nitrile coated cut-resistant gloves for this because the rubber coating prevents your hands from getting chilled through evaporation, and you dry the outside of your gloves off and stick them in your pockets without soaking your clothes.

I had job once that required me to handle nuts and bolts in freezing wet conditions for hours on end. My solution was the lanolin + coated kevlar gloves, and I got a quarterback's hand pouch and microfiber towel to wear on my belt. When my hands got too cold I'd dry the outside of the gloves off as best I could, and tuck my hands into the pouch with a chemical handwarmer for a minute or two. It worked great.