I bake sourdough almost every day in my bread machine (3 kids under 6 don't allow for kneading!). I was getting a great, consistent loaf all through winter but in the two sunny days we've had my bread hasn't risen nearly as much (though enough to still be good). My recipe is:
300g refreshed starter (100%, I refresh it, divide it immediately and put 300 in the machine, the rest back in the fridge)
Then I add on top, without mixing:
400g White bread flour
4 hr rest followed by 4 hr bread cycle.
Any tips to adjust for the weather?