10:42 PM Saturday, April 30, 2022
May Climate Normals and Records for Duluth, Minnesota.
Normal high on the 1st: 57
Normal high on the 31st: 68
Normal low on the 1st: 36
Normal low on the 31st: 46
Average monthly temperature: 52.0 degrees
Warmest May on record: 57.7 F set in 2018
Coldest May on record: 38.8 F set in 1907
Normal precipitation: 3.37″
Wettest May on record: 7.99″ set in 1879
Driest May on record: 0.15″ set in 1976
Normal snowfall: 0.8″
Snowiest May on record: 13.3″ set in 2019
Note: Averages below using the 1991-2020 climate period.
Number of days with a high of at least 60: 18
Number of days with a high of at least 70: 8
Number of days with a high of at least 80: 2
Number of days with a low temperature of 32 or colder: 4
Average date of first 60-degree high temperature: April 8
Average date of first 70-degree high temperature: April 23
Average date of first 80-degree high temperature: May 22
Average date of last 32 degree or lower minimum temperature: May 14
On average we see 1 day in May with at least 0.1″ snowfall
Mean date for last 0.1″ snowfall is April 26. Latest date on record for last 0.1″ snowfall is May 28 (set in 1965)
Since 2000 there have been 8 years where we’ve had at least 0.1″ of snow in the month of May, those years include 2002, 2005, 2007, 2008, 2010, 2016, 2017, and 2019.
Astronomical Data for May at Duluth, Minnesota
Sunrise on the 1st: 5:53 AM CDT
Sunrise on the 31st: 5:18 AM CDT
Sunset on the 1st: 8:19 PM CDT
Sunset on the 31st: 8:54 PM CDT
CFS model precipitation outlook for May 2022.
For northeast Minnesota and northwest Wisconsin — Near normal precipitation.

CFS model precipitation anomaly trend (last 6 model runs) for May 2022.
Green=Above normal precipitation
Yellow=Below normal precipitation
White=Near normal precipitation

CFS model temperature outlook for May 2022.
For northeast Minnesota and northwest Wisconsin — Slightly warmer than average.

CFS model temperature anomaly trend (last 6 model runs) for May 2022.
Orange and red: Above average temperatures
Blue: Below average temperatures
White: Near normal temperatures

Thanks for reading!
Tim

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