Raining on the West Coast?

Hi all - looking to the locals on this one. I'm up in Arthur's Pass where it's been raining lightly but steadily all night and morning. Was wondering if it's falling on any of the West Coast drainages? More importantly, can anyone point out any runs that are possible at this time of year (dry late summer) if it's not raining? Especially in the Class IV range - Lower Hoki? Toaroha? Totara? Thanks and happy paddling! -Kate