October 2019 en route for potential Top 5 coldest Octobers in Portland

Weather

The month of October started out cooler than usual, and the trend stuck around

PORTLAND, Ore. (KOIN) – It’s been a chilly October.

This all started at the beginning of the month when we should’ve been floating around 70 degrees, but instead, we were somewhere around 60 degrees.

Check out the bar graph below, you can see that a majority of the month of October has fallen below normal (blue bars). There have been six days out of 28 so far that have been slightly above normal and one day at normal. This consistent drop in temperatures was the result of multiple rain events and continuous cold air dropping in from Canada this month.

The graphs below show the start of October to the end of October and what the average temperature usually. So the first three days of October usually see daytime highs, more often than not, around 70 degrees. In the last five days of October, our daytime high is usually around the upper 50s, which if you take a look at the bar graph again, we were below average on those days too!

Here is a list of the current top 5 coldest October months (average mean), based on data starting in 1940 and ending in 2018. We are currently sitting at 52.5 as of October 28 with a below-average forecast coming to wrap up the month of October. Likely enough to get us on the list by the time we finish Halloween!

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