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While November was a little wetter than normal, December has begun with lingering fog.
Another high-rain month in November, 4.8 inches worth, with 1 inch falling the first two days. The 0.9 inch storm Nov. 1 was the highest single-day amount.
Fourteen days in a row of rain Nov. 9-22 dropped 3 inches, with most of it, 1.9 inches, Nov. 17-22. The month's last large rain event was 0.4 inches Nov. 25.
Seventeen of the 20 rain days were 0.1 inches or more. Six were at least 0.36 inches.
Five years since 2015 November has had at least 5.6 inches of rain. Ten times since 2011 at least 4.7 inches came down. This is only the 10th wettest November since 2000.
Novembers are historically wet in the 21st century. At least 3.5 inches of rain has fallen 18 years. More than 4 inches of rain fell 14 times. In nine years, over 5 inches fell and 6 inches or more has fallen five times.
Five years since 2015 there has been at least 5.6 inches of rain. The most rain this century, 8.1 inches, was 2021, when the Skagit River flooded downtown Mount Vernon.
Five years this century less than 3 inches of rain has fallen. Two of those years were 2019 and 2020.
The 4.8 inches this November is 8% above the century average. It is the seventh month in a row of above average rainfall for the century. Nine of 11 months have had above average rain. For the year, the 32.5 inches of precipitation is 4.3 inches above the century average.
The fall's first frost was Nov. 29, 30.7 degrees, the month's low temperature and one of four nights it dipped below 33 degrees.
November's high was 59.4 degrees Nov. 10. The last 50-plus degrees day was the 24th, the fifth day in a row over 50 degrees.
The month was a little warmer than average for the century, with average temperature of 45.3 degrees 1.3 degrees higher. The average daily high, at 50.8, almost matched the high for the last 25 years. The 40.5 degrees morning average was 2.5 degrees above the month's century average.
No precipitation or temperature records were set.
There is no data for 2003.
Measurements and data are at Washington State University's Mount Vernon weather station on Memorial Highway.
Rain Report
Rainfall in November: 4.8"
Number of rain days: 20
Least rain, one day: 0.01", 2 days
Most rain, one day: 0.6", 2 days
Least rain: 1.61", 2000
Most rain: 8.15", 2021
Average rainfall, 2000-2024*: 4.5"
Rainfall in October: 4.2"
* No data, 2003
Data from WSU Mount Vernon
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