Christmas Day weather in and around Boise will be close to the average, but historical extremes for the holiday are, well, extreme, according to a feature on the National Weather Service website.
Pulling 134 years of statistics from the National Climatic Data Center, the Christmas weather site shows Boise' record Christmas-Day high was 60 degrees in 1885, and the lowest high was a paltry 1 degree in 1924.
How low did it go? Minus 20 degrees on Christmas Day 1990. The highest overnight low was 47 degrees in 1906.
This year, the yuletide forecast for the Treasure Valley calls for highs ranging from 29 to 34 and overnight lows of 14 to 19. That's a bit colder than the 134-year averages of 36 high, 22 low.
No precipitation is expected this Christmas Day, but in 1998 6.1 inches of snow fell on the holiday. The historical probability of Boise snow on Christmas is 22 percent.