This screenshot shows predicted relative humidity over Snæfellsnes at 850mb (roughly 1500 meter elevation). It's predicted 99% for 18:00 (6PM). That generally means no visibility on the mountain and showers.
Conditions at Gufuskálar Base @ 18:00 (6PM).
Wind from South-West, 225° - 6 meters per second.
Dew Point: 7,5°C
This morning we were able to see the lower parts of the glacier, but early afternoon stratus clouds came in from South-West. No visibility on the glacier and light showers around mountains this afternoon.
Outlook for tomorrow
Probably similar cloud coverage, although very distinctive dry air masses are to be found higher up. That makes it a little troublesome to predict, but likely very similar weather as today.
We will make final decision on tomorrow's Grand Summit Tour at 8:30AM and Midnight Sun Tour at 5:00PM - If you've got those tours booked, make sure we're able to contact you in case the tour will be canceled.
Below is a picture from Hellissandur @ 18:50, looking south towards Snæfellsjökull glacier.