Normally you can plan around any storms along I5. Just north of Grants Pass there is about 5 mountain passes, short mountains - just about 1,200' at the most over each one, then back down to the valley with a river to cross, then back up over a small pass.
From Ashland to Redding is a large mountain pass. If it is raining in Medford and Grants Pass, then likely it will snow at the 4,500' pass above. You can spend a day or two in Grants Pass, Rouge River, or another area. Then take the pass when good weather will happen for the next 24 hours. It is unlikely that you will have bad weather, yet it only takes about 3 days to get great weather.
Once south of Redding, then you are in another valley, and not likely to see any snow until south of Bakersfield. There I 5 goes over another 6% grade and 4,500+ foot elevation. If it is raining, spend the night, and then try in the morning. Likely it will clear up. Or you can take highway 58 east to highway 395, then south to Palm Springs, and never go over about 3,500' elevation, and MISS a lot of LA traffic. Even save a few miles too!
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
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