A few weeks ago I published a post about warm weather in May. Most of us are delighted to get an early start to summer, with days that have temperatures in the 80s and 90s, especially because they aren't usually accompanied by the humidity levels common in mid-summer. Of course, most Mays have a few cool days in store to remind us that we're still transitioning from spring to summer (May 2015, warmest on record, was an exception). And raw days in the latter part of May are especially cruel, with summer so close at hand. This post focuses on these late, cold days.
Two dates that stand out on the list below are May 26, 1967 and May 27, 1961. Both had highs only in the 40s, which is what the typical high is in the second week of March. The high on May 26, 1967 was 46°, twenty-eight degrees below average; May 27, 1961's high of 47° was twenty-seven degrees below average.
One characteristic of chilly days in May is that high temperatures are often significantly more below average than low temperatures. This is due largely to clouds and rain (and east-northeasterly winds). Although a typical day in May has a 15-degree difference between its high and low, the chilly days listed below show diurnal variations that are often half that range (seven degrees or less).
|CHILLY DAYS IN LATE MAY (SINCE 1915)|
|(Sorted by Calendar Date)|