The weather forecast for Jan. 11, 2022, is 75 degrees and sunny. Would you believe, then, that seventy-three years ago, on Jan. 11, 1949, Pasadena was blanketed with a layer of snow?. The day lives on in record books, as it was the heaviest snowfall in Pasadena history. Six inches fell at Pasadena City Hall that day. Here's what "The Big Snow" looked like at Poly.