Good luck!Heres to a warm winter.

I don't know, farmer's almanac says it's supposed to be colder than normal this winter. Who knows how accurate that is...

Will be interesting to see how it does over the winter.

Good luck! I know of a couple in So Cali that are surviving, but they are both near the coast. I suspect your winter is much colder than ours.

what kind of winter temps do you typicall have there?

Our(dead of) winter temps are 62 and 42f. Summer's are 78-80H,58-60L.Winter temps don't swing much one way or the other,summer can be hard to average since we might have a week of mid summer 72f followed by half a week of 90-102. But late May-Sept is close to 80.
Even though we never ever have any kind of dead of winter heatwave like the Santa Ana's,we do have many,many,clear sunny days..our 18 inches of annual rain average has been higher that what we have been getting the new century..maybe 13-14" has been it.so plenty of clear weather. I'm hoping a black plastic sheet around the rootball will warm the soil on those sunny days.

What Cold Hardiness Zone are you in? I'm in S. Cal (1.5 miles from the beach) and can not say that my winter low is 42F...

The 42 is ave. Last winter's lowest low was 36. Sunset's 17 bordering on warmer zones,and 10a usda. Hayward is about equaldistant from Oakland and San Jose..and summer temps range back and forth the typical temps of each= San Jose's summer ave of 84, and Oaktowns 74.The winter low sounds high-but isnt.We dont have a winter night that averages below 40. Yes,it can dip below..but that all time ave is over 40.
I can't be more than 3-4 miles from the waters of the S.F. bay as the crow fly's.

Hows your coco doing?

Made it to the end of March. A big drawback was in summer-it was in full sun.When winter rolled around,a large Yucca would shade it about midday. Costing some prime winter warm hours. Second was-they need reflected heat from a wall. I had it in the open. I never did cover it and a mid January weekend of temps near or about 33..after a week before of temps in the 70's..that seemed to be the eventual knockout punch as it just hung on from there. And lastly,to have a real chance needs a good sized coconut to start with,and some real manipulation of soil to keep dry in winter.I might try again some year as urban warming keeps up.Besides they really do look great when you see them in ground with those glossy green fronds and golden yellow petioles..no wonder the holy grail of California palm growing.

Please don't tell me it died :( I am a little more inland than you and have smaller coco's, had them outside since the middle of april. The tips are dried up some, and the leaves are yellowing, but where the sun doesn't shine they are darker green.( they turned colors mainly when temps reached above 103. The new fonds I have are darker too, which is a relief. How long did you have it in the ground? How long and cold was it? Heres some things I'm going to try, they might help you too...
When winter hits, tie a water proof tarp around trunk and spread it a about 5 feet away from tree. This will keep cold rain water from soaking into ground and causing root rot.It looks bad but should help. Also planting by house and have shade during hottest part of day. When temps get close to 35-39, turn on a heater with a range of 20 feet, should keep frost off. Also buy root heating cables.