I realized that link went down around November, the forums suggest that they might be bringing back a new version. There are a couple iphone apps that will figure it out for you, but I use this set up from Runners’ World:
30 degrees: 2 tops, 1 bottom. Long-sleeve base layer and a vest keep your core warm. Tights (or shorts, for polar bears).
10 to 20 degrees: 2 tops, 2 bottoms. A jacket over your base layer, and wind pants over the tights.
0 to 10 degrees: 3 tops, 2 bottoms. Two tops (fleece for the cold-prone) and a jacket. Windbrief for the fellas.
Minus 10 to 0 degrees: 3 tops, 2 bottoms, extra pair of mittens, 1 scarf wrapped around mouth or a balaclava.
Minus 20 degrees: 3 tops, 3 bottoms, 2 extra pairs of mittens, 1 balaclava, sunglasses. Or, says Arribas, “Stay inside”
Today was 13 degrees, with windchill it was 0. I went with the 0-10 degree range and wore a beanie (should have doubled up or worn ear warmers), tech gloves, shoes and knee-high thick socks on my extremities; a sports bra, tank top, “hyperwarm” fleece and my wind-resistant cycling jacket on top; nike pro shorties and thick athletic tights on my legs.
I wish I had worn a scarf or bandana around my neck for my cheeks/chin, my face is raw after 7 miles in ~1:05. I found those guidelines worked well for me though.