Do we perform better during interviews on sunny days?

We analyzed the results of consecutive medical school interviews at the University of Toronto between 2004 and 2009… Overall, those interviewed on rainy days received about a 1% lower score than those interviewed on sunny days… The difference in scores was equivalent to about a 10% lower total mark on the Medical College Admission Test.

Source: “Rainy weather and medical school admission interviews” from CMAJ 2009