First, friends, always check Open Snow!
After that…
We’ve had good success using this National Weather Service synopsis to infer “airmass weather” predictions for the Marble area. Using the Synopsis, you can usually know when a storm will arrive, how strong it will be, and when the storm will end. In terms of timing your skiing, larger storms can close Quarry Road, especially on weekends when the mine isn’t working and the miners may not snowplow. Satellite weather is useful as well, we like this one, many others available.