Well, the weather forecast isn’t looking too bad given the jet stream summer we’re having in the UK at present. Accuweather’s 25 day forecast for the fortnight we’re in the Chamonix-Mont Blanc area shows lots of sunny days (and throws in some realism in the shape of “a couple of showers”):
I really like the Chamonix Weather, the Chamonix Mont Blanc tourist office’s weather page, too – particularly the graphical representation of the variation across altitude for today/tomorrow – but it only shows a 5 day forecast and I need a tad more crystal ball gazing to help fine tune my packing.
Talking of packing, I’ve treated myself to a new daypack: it’s a Lowe Alpine AirZone ND 32, women’s specific fit: