November's weather, by the numbers.
National Weather Service graphic
WALLA WALLA — November, the last full month of autumn, delivered its share of bone-chilling days and nights, but at the end came up way short for rainfall.
And speaking of bone-chilling, December is set to deliver a winter blast this week with lows predicted to reach the coldest marks so far this year.
But back to November, the month’s average temperature was 40.4 degrees, which was 1.5 degrees colder than normal, according to the National Weather Service. The lowest low was 19 degrees on the nights of Nov. 21-22 and Nov. 29 while the warmest day was 64 degrees on the first day of the month. The lows matched the coldest nights recorded so far this year, which had been 19 degrees on three nights in January.
Only 1.70 inches of rain fell during the month, a mark 1.17 inches below normal, and all of that fell between Nov. 1 and Nov. 19. The heaviest rain fell on Nov. 15 when .46 inches came down. There were 10 days with measurable precipitation of .01 inch or more and 20 days with zero or trace rainfall.
The sparse precipitation brought the year-to-date total to 11.51 inches, which is 6.87 inches below normal.
The peak wind gust was 45 mph recorded on Nov. 2 at Walla Walla Regional Airport.
According to the National Weather Service’s Climate Prediction Center, December’s outlook calls for near to below normal temperatures and near normal precipitation.
An arctic air mass is expected to sink into the area starting tonight, plunging nighttime temperatures into the teens and lower. Daytime highs are expected to remain in the 20s into the weekend.