If you are thinking this past January was unusually warm, you would not be wrong. January 2020 was Earth’s warmest January in 141 years of temperature records, according to NOAA’s National Centers for Environmental Information. According to WCSH6 meteorologist Keith Carson, Portland’s average temperature from December 1, 2019, to February 12, 2020, was 30.2 degrees Fahrenheit. So far, 2020 ranks as the 3rd warmest winter on record in Portland and the 6th warmest in Bangor.
Friends of Casco Bay’s Continuous Monitoring Station in Yarmouth confirms that water temperatures in Casco Bay were also especially warm. Our station has been amassing hourly data on the health of the Bay for nearly four years. This graph compares water temperatures from 2016 to date. Staff Scientist Mike Doan says “It is too soon to claim a trend, but the data are concerning. January 2020 water temperatures were on average the warmest we have seen at the station.”