All,
Definitely rain Friday night, will it carry into Saturday? It's not clear but showers are very likely and most likely wet roads. Rain and your ride leader do not get along so, it may be a leaderless ride. The posted ride is a long 90 miles into Ramona which may not be the best idea with threatening rain. The link below is a "rainy day" route which is intended to keep you close to the start in the event that it does start to rain, you can quickly and easily get back to OCRRR.
There is a good chance I will not be at the start. Do what you think is best.
And keep in mind that there is a nice ride on Sunday, 52 miles into Fallbrook.
https://ridewithgps.com/routes/41760293