pilgrimage preparations

Less than a month to go before John, jh and I leave to walk the last 200 miles of the pilgrimage to Santiago de Campostella in Spain.  I still feel a bit uncertain about what to pack.  I found a pilgrim site with the following average weather maps for Spain for the month of October.  This should help me to choose what combination of clothing layers to bring.

In the maps below, the east-west trending blue line is the Camino Frances, which is the route we will be taking.  Our starting point, Leon, is located just above the Camino Frances label, where another route comes down from the north to join the Camino Frances.  Santiago de Campostella is the hub where many routes converge, about 200 miles to the west of Leon.  You can click on the maps to see an enlarged view.

It looks like average high temperatures for the month of October along our route are 17.5 -20 deg. C  (63.5-68 deg F).  This is quite a bit cooler than I had expected.  I had worried about heat, since southern California can still be quite hot in early October.  It looks like I should perhaps be more concerned about cold and rainfall.  Average low temperatures for October along our route are 2.5 to 7.5 deg. C (36.5 to 46.5 deg. F), and average rainfall for the month is 13 cm (about 5 inches).

From the pilgrim forum:

It rained on 7 of 31 days last October (in Santiago; 8 days of rain in Lugo near Sarria). The average daily temperature was between 48 and 76 with the highest being 87 and the lowest 39.  October is very pleasant. The crowds have diminished by then, but everything is still open.